Consolidated Schedule of Investments in and Advances to Affiliates (Details)

v3.25.2

Consolidated Schedule of Investments in and Advances to Affiliates (Details) - USD ($) $ in Thousands		3 Months Ended			6 Months Ended
		Jun. 30, 2025		Jun. 30, 2024	Jun. 30, 2025		Jun. 30, 2024	Dec. 31, 2024
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		$ 52,420		$ 3,414	$ 22,875		$ (8,954)
Amount of Unrealized Gain/(Loss)		(18,951)		$ 23,044	44,239		$ 63,693
Diluted, percentage (as a percent)				20.00%			20.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[1],[2],[3]				4,932,669
Ending balance	[4]	5,093,070			5,093,070
Control investments
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		(2,998)		$ (361)	(2,976)		$ (352)
Amount of Unrealized Gain/(Loss)		33,154		5,589	33,555		37,659
Amount of Interest, Fees or Dividends Credited to Income					116,454		102,437
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,087,890	[2]	2,006,698
Gross Additions					291,307		243,661
Gross Reductions					119,552		114,546
Ending balance		2,295,565	[4]	2,075,429	2,295,565	[4]	2,075,429
Affiliate investments
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		55,647		7,863	57,711		753
Amount of Unrealized Gain/(Loss)		(47,745)		9,502	(8,742)		15,428
Amount of Interest, Fees or Dividends Credited to Income					49,501		40,928
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					846,798	[2]	615,002
Gross Additions					303,836		287,347
Gross Reductions					258,488		209,969
Ending balance		$ 856,226	[4]	752,764	$ 856,226	[4]	752,764
Investment, Identifier [Axis]: Fidelity Government Fund
Schedule of Investments [Line Items]
Total Rate		3.99%			3.99%			4.14%
Investment, Identifier [Axis]: 2717 MH, L.P., LP Interests (2717 GRE-LP, L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					441
Gross Additions					0
Gross Reductions					0
Ending balance		$ 441			441
Investment, Identifier [Axis]: 2717 MH, L.P., LP Interests (2717 GRE-LP, L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							0
Gross Additions							441
Gross Reductions							0
Ending balance				441			441
Investment, Identifier [Axis]: 2717 MH, L.P., LP Interests (2717 HPP-MS, L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					64		60
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					383		315
Gross Additions					64		59
Gross Reductions					0		0
Ending balance		447		374	447		374
Investment, Identifier [Axis]: 2717 MH, L.P., LP Interests (2717 MH, L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					5,466		57
Amount of Unrealized Gain/(Loss)					(4,945)		2,941
Amount of Interest, Fees or Dividends Credited to Income					0		278
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					8,818		6,050
Gross Additions					4,046		2,998
Gross Reductions					11,178		57
Ending balance		1,686		8,991	1,686		8,991
Investment, Identifier [Axis]: 423 HAR, LP, LP Interests (423 HAR, L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		51
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,226		996
Gross Additions					0		52
Gross Reductions					0		0
Ending balance		$ 1,226		1,048	$ 1,226		1,048
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt 3.1
Schedule of Investments [Line Items]
Total Rate		10.00%			10.00%
PIK Rate		10.00%			10.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					3,109
Gross Reductions					0
Ending balance		$ 3,109			3,109
Investment, Identifier [Axis]: AAC Holdings, Inc., Warrants
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							0
Gross Additions							0
Gross Reductions							0
Ending balance				0			0
Investment, Identifier [Axis]: AAC Holdings, Inc., Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2],[5]	0
Gross Additions							0
Gross Reductions							0
Ending balance		0	[4],[6]	$ 0	0	[4],[6]	$ 0
Investment, Identifier [Axis]: AAC Holdings, Inc., Common Stock 1.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance		0			0
Investment, Identifier [Axis]: AAC Holdings, Inc., Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[6]	8,160			8,160
Investment, Identifier [Axis]: AAC Holdings, Inc., Preferred Equity 1.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(360)
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					8,520
Gross Reductions					360
Ending balance		$ 8,160			$ 8,160
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		18.00%	[6]	18.00%	18.00%	[6]	18.00%	18.00%	[5]
PIK Rate		18.00%	[6],[7]	18.00%	18.00%	[6],[7]	18.00%	18.00%	[5],[8]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(2)
Amount of Interest, Fees or Dividends Credited to Income							44
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 609	[2],[5]	418
Gross Additions							60
Gross Reductions							2
Ending balance		$ 779	[4],[6]	$ 476	$ 779	[4],[6]	$ 476
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		18.00%			18.00%
PIK Rate		18.00%			18.00%
Amount of Realized Gain/(Loss)					$ (139)
Amount of Unrealized Gain/(Loss)					3
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					609
Gross Additions					0
Gross Reductions					609
Ending balance		$ 0			$ 0
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.00%	[6],[9]	18.00%	10.00%	[6],[9]	18.00%	18.00%	[5]
PIK Rate		10.00%	[6],[7],[9]	18.00%	10.00%	[6],[7],[9]	18.00%	18.00%	[5],[8]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(44)
Amount of Interest, Fees or Dividends Credited to Income							1,404
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 17,365	[2],[5]	13,895
Gross Additions							1,919
Gross Reductions							44
Ending balance		$ 3,109	[4],[6],[9]	$ 15,770	$ 3,109	[4],[6],[9]	15,770
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt 2.1
Schedule of Investments [Line Items]
Total Rate		18.00%			18.00%
PIK Rate		18.00%			18.00%
Amount of Realized Gain/(Loss)					$ (3,303)
Amount of Unrealized Gain/(Loss)					80
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					17,365
Gross Additions					0
Gross Reductions					17,365
Ending balance		$ 0			$ 0
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[6],[9]	12.00%			12.00%
PIK Rate	[6],[7],[9]	12.00%			12.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[6],[9]	$ 3,109			$ 3,109
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt 4.1
Schedule of Investments [Line Items]
Total Rate		12.00%			12.00%
PIK Rate		12.00%			12.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					3,109
Gross Reductions					0
Ending balance		$ 3,109			$ 3,109
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt 5.1
Schedule of Investments [Line Items]
Total Rate		18.00%			18.00%
PIK Rate		18.00%			18.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					779
Gross Reductions					0
Ending balance		$ 779			779
Investment, Identifier [Axis]: AAC Holdings, Inc., Warrants
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5],[10]				0
Ending balance	[4],[6],[11]	0			0
Investment, Identifier [Axis]: AAC Holdings, Inc., Warrants 1.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance		0			0
Investment, Identifier [Axis]: AMEREQUIP LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[13]				570
Ending balance	[4],[14],[15]	$ 480			$ 480
Investment, Identifier [Axis]: ASC Interests, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%			13.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					(98)
Amount of Interest, Fees or Dividends Credited to Income					105
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,598
Gross Additions					0
Gross Reductions					170
Ending balance		$ 1,428			1,428
Investment, Identifier [Axis]: ASC Interests, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		(60)
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2]	100
Gross Additions					0		0
Gross Reductions					0		60
Ending balance		0	[4]	40	0	[4]	40
Investment, Identifier [Axis]: ASC Interests, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2]	266
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0	[4]	$ 266	$ 0	[4]	$ 266
Investment, Identifier [Axis]: ASC Interests, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.00%	[16]	13.00%	13.00%	[16]	13.00%	13.00%	[17]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					27		27
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					400	[2],[17]	400
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 400	[4],[16]	$ 400	$ 400	[4],[16]	$ 400
Investment, Identifier [Axis]: ASC Interests, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%	[16]	13.00%	13.00%	[16]	13.00%	13.00%	[17]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							109
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 1,598	[2],[17]	1,597
Gross Additions							1
Gross Reductions							0
Ending balance		$ 1,428	[4],[16]	$ 1,598	1,428	[4],[16]	1,598
Investment, Identifier [Axis]: ATS Operating, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				850
Ending balance	[4],[14]	$ 850			$ 850
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.57%	[14],[18],[19]		10.57%	[14],[18],[19]		10.85%	[12],[20]
Spread		6.00%	[14],[18],[19],[21]		6.00%	[14],[18],[19],[21]		6.00%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 360
Ending balance	[4],[14],[18],[19]	$ 1,260			$ 1,260
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		9.56%	[14],[19]		9.56%	[14],[19]		9.85%	[12],[20]
Spread		5.00%	[14],[19],[21]		5.00%	[14],[19],[21]		5.00%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 6,660
Ending balance	[4],[14],[19]	$ 6,660			$ 6,660
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.56%	[14],[19]		11.56%	[14],[19]		11.85%	[12],[20]
Spread		7.00%	[14],[19],[21]		7.00%	[14],[19],[21]		7.00%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 6,660
Ending balance	[4],[14],[19]	$ 6,660			6,660
Investment, Identifier [Axis]: ATS Workholding, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					(3,725)		0
Amount of Unrealized Gain/(Loss)					3,726		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2],[12]	0
Gross Additions					3,726		0
Gross Reductions					3,726		0
Ending balance		$ 0		$ 0	$ 0		$ 0
Investment, Identifier [Axis]: ATS Workholding, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		5.00%		5.00%	5.00%		5.00%	5.00%	[12],[23]
Amount of Realized Gain/(Loss)					$ (1,897)		$ 0
Amount of Unrealized Gain/(Loss)					2,261		(281)
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					113	[2],[12],[23]	328
Gross Additions					2,324		167
Gross Reductions					2,437		281
Ending balance		$ 0		$ 214	$ 0		$ 214
Investment, Identifier [Axis]: ATS Workholding, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		5.00%		5.00%	5.00%		5.00%	5.00%	[12],[17],[23]
Amount of Realized Gain/(Loss)					$ (2,842)		$ 0
Amount of Unrealized Gain/(Loss)					2,698		(187)
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					143	[2],[12],[17],[23]	473
Gross Additions					2,698		0
Gross Reductions					2,841		188
Ending balance		$ 0		$ 285	0		285
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[13]				896
Ending balance	[4],[14],[15]	$ 920			$ 920
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.25%	[14],[19],[21],[24]		7.25%	[14],[19],[21],[24]		7.25%	[12],[20],[22],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				$ (90)
Ending balance	[4],[14],[19],[24]	$ (75)			$ (75)
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.70%	[14],[19]		11.70%	[14],[19]		11.73%	[12],[20]
Spread		7.25%	[14],[19],[21]		7.25%	[14],[19],[21]		7.25%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 24,073
Ending balance	[4],[14],[19]	$ 23,762			$ 23,762
Investment, Identifier [Axis]: Adams Publishing Group, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.00%	[14],[19],[26]		11.00%	[14],[19],[26]		11.00%	[12],[20],[27]
Spread		7.00%	[14],[19],[21],[26]		7.00%	[14],[19],[21],[26]		7.00%	[12],[20],[22],[27]
PIK Rate		1.00%	[7],[14],[19],[26]		1.00%	[7],[14],[19],[26]		1.00%	[8],[12],[20],[27]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[27]				$ 7,773
Ending balance	[4],[14],[19],[26]	$ 7,844			$ 7,844
Investment, Identifier [Axis]: Adams Publishing Group, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.00%	[14],[19],[26]		11.00%	[14],[19],[26]		11.00%	[12],[20],[27]
Spread		7.00%	[14],[19],[21],[26]		7.00%	[14],[19],[21],[26]		7.00%	[12],[20],[22],[27]
PIK Rate		1.00%	[7],[14],[19],[26]		1.00%	[7],[14],[19],[26]		1.00%	[8],[12],[20],[27]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[27]				$ 18,504
Ending balance	[4],[14],[19],[26]	$ 17,411			$ 17,411
Investment, Identifier [Axis]: American Health Staffing Group, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		5.00%	[14],[19],[21],[24]		5.00%	[14],[19],[21],[24]		5.00%	[12],[20],[22],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				$ (5)
Ending balance	[4],[14],[19],[24]	$ (4)			$ (4)
Investment, Identifier [Axis]: American Health Staffing Group, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%	[14],[19]		12.50%	[14],[19]		12.50%	[12],[20]
Spread		5.00%	[14],[19],[21]		5.00%	[14],[19],[21]		5.00%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 6,162
Ending balance	[4],[14],[19]	$ 5,908			5,908
Investment, Identifier [Axis]: American Nuts, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(1,180)
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					8,970
Gross Reductions					1,180
Ending balance	[4],[14]	$ 7,790			$ 7,790
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.95%	[14],[19]		12.95%	[14],[19]		14.49%	[12],[20]
Spread		8.50%	[14],[19],[21]		8.50%	[14],[19],[21]		9.75%	[12],[20],[22]
PIK Rate		12.95%	[7],[14],[19]		12.95%	[7],[14],[19]		14.49%	[8],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 5,985
Ending balance	[4],[14],[19]	$ 7,653			$ 7,653
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		12.95%			12.95%
Spread		8.50%			8.50%
PIK Rate		12.95%			12.95%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					253
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					7,653
Gross Reductions					0
Ending balance		$ 7,653			$ 7,653
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.95%	[14],[19]		12.95%	[14],[19]		14.49%	[12],[20]
Spread		8.50%	[14],[19],[21]		8.50%	[14],[19],[21]		9.75%	[12],[20],[22]
PIK Rate		12.95%	[7],[14],[19]		12.95%	[7],[14],[19]		14.49%	[8],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 9,738
Ending balance	[4],[14],[19]	$ 7,653			$ 7,653
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 2.1
Schedule of Investments [Line Items]
Total Rate		12.95%			12.95%
Spread		8.50%			8.50%
PIK Rate		12.95%			12.95%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					253
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					7,653
Gross Reductions					0
Ending balance		$ 7,653			7,653
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[12],[20],[23]							16.49%
Spread	[12],[20],[22],[23]							11.75%
PIK Rate	[8],[12],[20],[23]							16.49%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[23]				3,502
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[12],[20],[23]							16.49%
Spread	[12],[20],[22],[23]							11.75%
PIK Rate	[8],[12],[20],[23]							16.49%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[23]				5,697
Investment, Identifier [Axis]: American Teleconferencing Services, Ltd., Secured Debt 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5],[17],[23]				76
Investment, Identifier [Axis]: American Teleconferencing Services, Ltd., Secured Debt 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5],[17],[23]				374
Investment, Identifier [Axis]: Amounts related to investments transferred to or from other 1940 Act classification during the period, , Control investments
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							4,370
Amount of Interest, Fees or Dividends Credited to Income							2,811
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							60,384
Gross Additions							0
Gross Reductions							0
Ending balance				0			0
Investment, Identifier [Axis]: Amounts related to investments transferred to or from other 1940 Act classification during the period, Affiliate Investments
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					3,453		0
Amount of Unrealized Gain/(Loss)					550		(4,370)
Amount of Interest, Fees or Dividends Credited to Income					291		(2,811)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					35,920		(60,384)
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		0		$ 0	0		$ 0
Investment, Identifier [Axis]: Amounts related to investments transferred to or from other 1940 Act classification during the period, Control investments
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(3,450)
Amount of Interest, Fees or Dividends Credited to Income					227
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					(35,920)
Gross Additions					0
Gross Reductions					0
Ending balance		0			0
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Total Rate				14.13%			14.13%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,300	[2]	0
Gross Additions							0
Gross Reductions							0
Ending balance		5,340	[4]	$ 0	5,340	[4]	0
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Preferred Member Units 1.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance		0			0
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							760
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2]	4,860
Gross Additions							760
Gross Reductions							0
Ending balance		0	[4]	$ 5,620	0	[4]	$ 5,620
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Preferred Member Units 2.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					40
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,300
Gross Additions					40
Gross Reductions					0
Ending balance		5,340			5,340
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				15.38%			15.38%
Spread				10.00%			10.00%
Amount of Realized Gain/(Loss)					0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2],[25]	219
Gross Additions					0		1
Gross Reductions					0		0
Ending balance		$ 0	[4],[24]	$ 220	$ 0	[4],[24]	$ 220
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		17.50%		15.38%	17.50%		15.38%	13.75%
Spread				10.00%			10.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					360		346
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,048	[2]	4,084
Gross Additions					6		34
Gross Reductions					100		195
Ending balance		$ 3,954	[4]	$ 3,923	3,954	[4]	3,923
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Warrants
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2],[10]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0	[4],[11]	0	$ 0	[4],[11]	0
Investment, Identifier [Axis]: Ansira Partners II, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.75%	[14],[19],[21],[24]		6.75%	[14],[19],[21],[24]		6.75%	[12],[20],[22],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				$ (187)
Ending balance	[4],[14],[19],[24]	$ (166)			$ (166)
Investment, Identifier [Axis]: Ansira Partners II, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.07%	[14],[19]		11.07%	[14],[19]		11.25%	[12],[20]
Spread		6.75%	[14],[19],[21]		6.75%	[14],[19],[21]		6.75%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 74,279
Ending balance	[4],[14],[19]	$ 75,049			75,049
Investment, Identifier [Axis]: ArborWorks, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				0
Ending balance	[4],[14]	0			0
Investment, Identifier [Axis]: ArborWorks, LLC, Preferred Equity 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				12,552
Ending balance	[4],[14]	14,336			14,336
Investment, Identifier [Axis]: ArborWorks, LLC, Preferred Equity 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				0
Ending balance	[4],[14]	$ 0			$ 0
Investment, Identifier [Axis]: ArborWorks, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.00%	[14]		15.00%	[14]		15.00%	[12]
PIK Rate		15.00%	[7],[14]		15.00%	[7],[14]		15.00%	[8],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				$ 1,997
Ending balance	[4],[14]	$ 2,153			$ 2,153
Investment, Identifier [Axis]: ArborWorks, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.91%	[14],[19]		10.91%	[14],[19]		11.08%	[12],[20]
Spread		6.50%	[14],[19],[21]		6.50%	[14],[19],[21]		6.50%	[12],[20],[22]
PIK Rate		10.91%	[7],[14],[19]		10.91%	[7],[14],[19]		11.08%	[8],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 8,054
Ending balance	[4],[14],[19]	$ 8,507			8,507
Investment, Identifier [Axis]: Archer Systems, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				2,450
Ending balance	[4],[14],[15]	2,380			2,380
Investment, Identifier [Axis]: B-O-F Corporation, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14]	$ 249			$ 249
Investment, Identifier [Axis]: B-O-F Corporation, Secured Debt 1
Schedule of Investments [Line Items]
Spread	[14],[19],[21],[24]	5.75%			5.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19],[24]	$ (19)			$ (19)
Investment, Identifier [Axis]: B-O-F Corporation, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[14],[19]	9.05%			9.05%
Spread	[14],[19],[21]	4.75%			4.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 4,079			$ 4,079
Investment, Identifier [Axis]: B-O-F Corporation, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[14],[19]	11.05%			11.05%
Spread	[14],[19],[21]	6.75%			6.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 4,079			$ 4,079
Investment, Identifier [Axis]: BDB Holdings, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(1,060)
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2]				18,920
Gross Additions					0
Gross Reductions					1,060
Ending balance	[4]	$ 17,860			$ 17,860
Investment, Identifier [Axis]: BDB Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%			12.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					17
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					420
Gross Reductions					0
Ending balance	[4]	$ 420			420
Investment, Identifier [Axis]: BP Loenbro Holdings Inc., Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				3,620
Ending balance	[4],[14]	$ 5,900			$ 5,900
Investment, Identifier [Axis]: BP Loenbro Holdings Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.18%	[14],[19]		10.18%	[14],[19]		10.68%	[12],[20],[28]
Spread		5.75%	[14],[19],[21]		5.75%	[14],[19],[21]		6.25%	[12],[20],[22],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[28]				$ 1,199
Ending balance	[4],[14],[19]	$ 899			$ 899
Investment, Identifier [Axis]: BP Loenbro Holdings Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[14],[19]	10.15%			10.15%
Spread		5.75%	[14],[19],[21]		5.75%	[14],[19],[21]		6.25%	[12],[20],[22],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				$ (22)
Ending balance	[4],[14],[19]	$ 2,023			$ 2,023
Investment, Identifier [Axis]: BP Loenbro Holdings Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.11%	[14],[19]		10.11%	[14],[19]		10.92%	[12],[20]
Spread		5.75%	[14],[19],[21]		5.75%	[14],[19],[21]		6.25%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 26,173
Ending balance	[4],[14],[19]	$ 25,839			$ 25,839
Investment, Identifier [Axis]: BP Loenbro Holdings Inc., Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[14],[19]	10.14%			10.14%
Spread	[14],[19],[21]	5.75%			5.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 9,470			$ 9,470
Investment, Identifier [Axis]: Barfly Ventures, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					950		580
Amount of Interest, Fees or Dividends Credited to Income					1,103		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,860	[2],[12]	4,140
Gross Additions					950		580
Gross Reductions					0		0
Ending balance		$ 6,810	[4],[14],[15]	$ 4,720	$ 6,810	[4],[14],[15]	$ 4,720
Investment, Identifier [Axis]: Barfly Ventures, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		7.00%	[14]	7.00%	7.00%	[14]	7.00%	7.00%	[12]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					24		26
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					711	[2],[12]	711
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 711	[4],[14]	$ 711	711	[4],[14]	711
Investment, Identifier [Axis]: Batjer TopCo, LLC, Preferred Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					1,820		(430)
Amount of Interest, Fees or Dividends Credited to Income					350		407
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,160	[2],[13]	6,150
Gross Additions					1,820		0
Gross Reductions					0		430
Ending balance		6,980	[4],[15]	$ 5,720	6,980	[4],[15]	$ 5,720
Investment, Identifier [Axis]: Batjer TopCo, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				10.00%			10.00%	10.00%
Amount of Realized Gain/(Loss)					0		$ 0
Amount of Unrealized Gain/(Loss)					0		(6)
Amount of Interest, Fees or Dividends Credited to Income					12		18
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					446	[2]	0
Gross Additions					1		451
Gross Reductions					450		6
Ending balance		$ (3)	[4],[24]	$ 445	$ (3)	[4],[24]	$ 445
Investment, Identifier [Axis]: Batjer TopCo, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.00%		10.00%	10.00%		10.00%	10.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					14		14
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					270	[2]	270
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 270	[4]	$ 270	$ 270	[4]	$ 270
Investment, Identifier [Axis]: Batjer TopCo, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.00%		10.00%	10.00%		10.00%	10.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		(67)
Amount of Interest, Fees or Dividends Credited to Income					569		545
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					10,529	[2]	10,575
Gross Additions					11		10
Gross Reductions					0		67
Ending balance		$ 10,540	[4]	$ 10,518	10,540	[4]	$ 10,518
Investment, Identifier [Axis]: Berry Aviation, Inc., Preferred Member Units 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				0
Ending balance	[4],[14],[29]	0			0
Investment, Identifier [Axis]: Berry Aviation, Inc., Preferred Member Units 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[30]				0
Ending balance	[4],[14],[29]	0			0
Investment, Identifier [Axis]: Berry Aviation, Inc., Preferred Member Units 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[30]				0
Ending balance	[4],[14],[29]	$ 0			$ 0
Investment, Identifier [Axis]: Bettercloud, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[9],[14],[19]	14.53%			14.53%
Spread		10.25%	[9],[14],[19],[21]		10.25%	[9],[14],[19],[21]		10.25%	[12],[20],[22],[25]
PIK Rate	[7],[9],[14],[19]	7.25%			7.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				$ (48)
Ending balance	[4],[9],[14],[19]	$ 76			$ 76
Investment, Identifier [Axis]: Bettercloud, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.53%	[9],[14],[19],[31]		14.53%	[9],[14],[19],[31]		15.76%	[12],[20]
Spread		10.25%	[9],[14],[19],[21],[31]		10.25%	[9],[14],[19],[21],[31]		10.25%	[12],[20],[22]
PIK Rate		7.25%	[7],[9],[14],[19],[31]		7.25%	[7],[9],[14],[19],[31]		9.25%	[8],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 23,984
Ending balance	[4],[9],[14],[19],[31]	$ 237			$ 237
Investment, Identifier [Axis]: Bettercloud, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[9],[14],[19]	14.58%			14.58%
Spread	[9],[14],[19],[21]	10.25%			10.25%
PIK Rate	[7],[9],[14],[19]	7.25%			7.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[9],[14],[19]	$ 4,822			$ 4,822
Investment, Identifier [Axis]: Bettercloud, Inc., Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[9],[14],[19],[31]	14.58%			14.58%
Spread	[9],[14],[19],[21],[31]	10.25%			10.25%
PIK Rate	[7],[9],[14],[19],[31]	7.25%			7.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[9],[14],[19],[31]	$ 15,311			$ 15,311
Investment, Identifier [Axis]: Binswanger Enterprises, LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				650
Ending balance	[4],[14]	1,060			1,060
Investment, Identifier [Axis]: Bluestem Brands, Inc., Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5]				0
Ending balance	[4],[6]	$ 0			$ 0
Investment, Identifier [Axis]: Bluestem Brands, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.94%	[6],[9],[19]		12.94%	[6],[9],[19]		13.17%	[5],[20]
Spread		8.50%	[6],[9],[19],[21]		8.50%	[6],[9],[19],[21]		8.50%	[5],[20],[22]
PIK Rate		11.94%	[6],[7],[9],[19]		11.94%	[6],[7],[9],[19]		12.17%	[5],[8],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5],[20]				$ 170
Ending balance	[4],[6],[9],[19]	$ 101			$ 101
Investment, Identifier [Axis]: Bluestem Brands, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.00%	[6],[9],[19]		15.00%	[6],[9],[19]		15.00%	[5],[20]
Spread		7.50%	[6],[9],[19],[21]		7.50%	[6],[9],[19],[21]		7.50%	[5],[20],[22]
PIK Rate		14.75%	[6],[7],[9],[19]		14.75%	[6],[7],[9],[19]		14.75%	[5],[8],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5],[20]				$ 2,605
Ending balance	[4],[6],[9],[19]	$ 1,584			$ 1,584
Investment, Identifier [Axis]: Bluestem Brands, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.94%	[6],[9],[19]		12.94%	[6],[9],[19]		13.17%	[5],[20]
Spread		8.50%	[6],[9],[19],[21]		8.50%	[6],[9],[19],[21]		8.50%	[5],[20],[22]
PIK Rate		12.94%	[6],[7],[9],[19]		12.94%	[6],[7],[9],[19]		12.17%	[5],[8],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5],[20]				$ 3,535
Ending balance	[4],[6],[9],[19]	$ 2,103			2,103
Investment, Identifier [Axis]: Bluestem Brands, Inc., Warrants
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5],[10]				0
Ending balance	[4],[6],[11]	0			0
Investment, Identifier [Axis]: Boccella Precast Products LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate				10.00%			10.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(55)
Amount of Interest, Fees or Dividends Credited to Income							16
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							320
Gross Additions							0
Gross Reductions							55
Ending balance				$ 265			265
Investment, Identifier [Axis]: Boccella Precast Products LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					1,180		(1,680)
Amount of Interest, Fees or Dividends Credited to Income					254		18
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					310	[2]	1,990
Gross Additions					1,180		0
Gross Reductions					0		1,680
Ending balance		$ 1,490		$ 310	$ 1,490		$ 310
Investment, Identifier [Axis]: Boccella Precast Products LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		10.00%			10.00%			10.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					55
Amount of Interest, Fees or Dividends Credited to Income					15
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2]				266
Gross Additions					55
Gross Reductions					65
Ending balance		$ 256			256
Investment, Identifier [Axis]: Boccella Precast Products LLC., Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[15]	$ 1,490			$ 1,490
Investment, Identifier [Axis]: Boccella Precast Products LLC., Secured Debt
Schedule of Investments [Line Items]
Total Rate		10.00%			10.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4]	$ 256			$ 256
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Class B Preferred Member Units
Schedule of Investments [Line Items]
Total Rate		8.00%	[15]	8.00%	8.00%	[15]	8.00%	8.00%	[13]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							3,690
Amount of Interest, Fees or Dividends Credited to Income							1,390
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 30,520	[2],[13]	31,020
Gross Additions							3,690
Gross Reductions							0
Ending balance		$ 30,300	[4],[15]	$ 34,710	$ 30,300	[4],[15]	$ 34,710
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Class B Preferred Member Units 1.1
Schedule of Investments [Line Items]
Total Rate		8.00%			8.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					(220)
Amount of Interest, Fees or Dividends Credited to Income					1,187
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					30,520
Gross Additions					0
Gross Reductions					220
Ending balance		$ 30,300			$ 30,300
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[19],[32]	11.67%			11.67%
Spread	[19],[21],[32]	7.29%			7.29%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[25]				$ 0
Ending balance	[4],[19],[32]	$ 101,046			$ 101,046
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				13.43%			13.43%
Spread				8.05%			8.05%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(27)
Amount of Interest, Fees or Dividends Credited to Income							6,787
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							96,556
Gross Additions							7,563
Gross Reductions							1,283
Ending balance				$ 102,836			102,836
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		11.67%			11.67%
Spread		7.29%			7.29%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					(69)
Amount of Interest, Fees or Dividends Credited to Income					6,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					101,643
Gross Additions					68
Gross Reductions					665
Ending balance		$ 101,046			101,046
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							95
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							0
Gross Additions							0
Gross Reductions							0
Ending balance				0			0
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt 2.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					76
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance		0			0
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt, (9)
Schedule of Investments [Line Items]
Total Rate	[20],[33]							12.55%
Spread	[20],[22],[33]							7.99%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[20],[33]				101,643
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[34],[35]				0
Ending balance	[4],[14],[36],[37]	0			0
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[34],[35]				500
Ending balance	[4],[14],[36],[37]	$ 550			$ 550
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.45%	[14],[19],[36],[37]		11.45%	[14],[19],[36],[37]		11.65%	[12],[20],[34],[35]
Spread		7.00%	[14],[19],[21],[36],[37]		7.00%	[14],[19],[21],[36],[37]		7.00%	[12],[20],[22],[34],[35]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[34],[35]				$ 571
Ending balance	[4],[14],[19],[36],[37]	$ 571			$ 571
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.45%	[14],[19],[36],[37]		10.45%	[14],[19],[36],[37]		10.74%	[12],[20],[34],[35]
Spread		6.00%	[14],[19],[21],[36],[37]		6.00%	[14],[19],[21],[36],[37]		6.00%	[12],[20],[22],[34],[35]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[34],[35]				$ 6,341
Ending balance	[4],[14],[19],[36],[37]	$ 6,293			$ 6,293
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.45%	[14],[19],[36],[37]		12.45%	[14],[19],[36],[37]		12.74%	[12],[20],[34],[35]
Spread		8.00%	[14],[19],[21],[36],[37]		8.00%	[14],[19],[21],[36],[37]		8.00%	[12],[20],[22],[34],[35]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[34],[35]				$ 6,341
Ending balance	[4],[14],[19],[36],[37]	$ 6,293			$ 6,293
Investment, Identifier [Axis]: Brainworks Software, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.25%	[9],[14],[16],[19]		15.25%	[9],[14],[16],[19]		15.25%	[12],[17],[20],[23]
Spread		7.25%	[9],[14],[16],[19],[21]		7.25%	[9],[14],[16],[19],[21]		7.25%	[12],[17],[20],[22],[23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[17],[20],[23]				$ 761
Ending balance	[4],[9],[14],[16],[19]	$ 761			$ 761
Investment, Identifier [Axis]: Brainworks Software, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.25%	[9],[14],[16],[19]		15.25%	[9],[14],[16],[19]		15.25%	[12],[17],[20],[23]
Spread		7.25%	[9],[14],[16],[19],[21]		7.25%	[9],[14],[16],[19],[21]		7.25%	[12],[17],[20],[22],[23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[17],[20],[23]				$ 750
Ending balance	[4],[9],[14],[16],[19]	$ 230			230
Investment, Identifier [Axis]: Brewer Crane Holdings, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(1,420)		(320)
Amount of Interest, Fees or Dividends Credited to Income					60		60
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,680	[13]	5,620
Gross Additions					0		0
Gross Reductions					1,420		320
Ending balance		$ 3,260	[4],[15]	$ 5,300	$ 3,260	[4],[15]	$ 5,300
Investment, Identifier [Axis]: Brewer Crane Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		14.48%	[19]	15.48%	14.48%	[19]	15.48%	14.66%	[20]
Spread		10.00%	[19],[21]	10.00%	10.00%	[19],[21]	10.00%	10.00%	[20],[22]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					364		429
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,016	[20]	5,498
Gross Additions					0		14
Gross Reductions					0		248
Ending balance		$ 5,016	[4],[19]	$ 5,264	5,016	[4],[19]	5,264
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		50
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[13],[30]	1,000
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		0	[4],[15],[29]	$ 1,000	0	[4],[15],[29]	$ 1,000
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				13.00%			13.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							579
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							8,813
Gross Additions							0
Gross Reductions							0
Ending balance				$ 8,813			$ 8,813
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				13.00%			13.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							66
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							1,000
Gross Additions							0
Gross Reductions							0
Ending balance				$ 1,000			1,000
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Warrants
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[10]				0
Ending balance	[4],[11]	0			0
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Warrants 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		(25)
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0		1,808
Gross Additions					0		0
Gross Reductions					0		25
Ending balance		0		1,783	0		1,783
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Warrants 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		(35)
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0		2,482
Gross Additions					0		0
Gross Reductions					0		35
Ending balance		0		$ 2,447	0		$ 2,447
Investment, Identifier [Axis]: Brightwood Capital Fund Investments, LP Interests (Brightwood Capital Fund III, LP)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[34],[38],[39]				3,120
Ending balance	[4],[36],[40],[41]	2,898			2,898
Investment, Identifier [Axis]: Brightwood Capital Fund Investments, LP Interests (Brightwood Capital Fund IV, LP)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[13],[34],[38],[39]				4,016
Ending balance	[4],[15],[36],[40],[41]	3,477			3,477
Investment, Identifier [Axis]: Brightwood Capital Fund Investments, LP Interests (Brightwood Capital Fund V, LP)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[13],[34],[38],[39]				3,809
Ending balance	[4],[15],[36],[40],[41]	$ 4,875			$ 4,875
Investment, Identifier [Axis]: Buca C, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Total Rate		6.00%		6.00%	6.00%		6.00%	6.00%
PIK Rate		6.00%	[7]	6.00%	6.00%	[7]	6.00%	6.00%	[8]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0	[4]	$ 0	$ 0	[4]	$ 0
Investment, Identifier [Axis]: Buca C, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.00%		14.00%	15.00%		14.00%	15.00%	[17],[23]
PIK Rate		15.00%		14.00%	15.00%		14.00%	15.00%	[8],[17],[23]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		563
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2],[17],[23]	12,144
Gross Additions					0		371
Gross Reductions					0		0
Ending balance		$ 0		$ 12,515	$ 0		$ 12,515
Investment, Identifier [Axis]: Buca C, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.00%		14.00%	15.00%		14.00%	15.00%	[23]
PIK Rate		15.00%		14.00%	15.00%		14.00%	15.00%	[8],[23]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2],[23]	0
Gross Additions					0		58
Gross Reductions					0		0
Ending balance		$ 0		$ 58	$ 0		58
Investment, Identifier [Axis]: Buca C, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		15.00%	[9],[16]		15.00%	[9],[16]		15.00%	[17],[23]
PIK Rate		15.00%	[7],[9],[16]		15.00%	[7],[9],[16]		15.00%	[8],[17],[23]
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					(391)
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[17],[23]				0
Gross Additions					391
Gross Reductions					391
Ending balance	[4],[9],[16]	$ 0			$ 0
Investment, Identifier [Axis]: Buca C, LLC., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[9],[16]	15.00%			15.00%
PIK Rate	[7],[9],[16]	15.00%			15.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[9],[16]	$ 0			$ 0
Investment, Identifier [Axis]: Buca C, LLC., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[9],[16]	15.00%			15.00%
PIK Rate	[7],[9],[16]	15.00%			15.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[9],[16]	$ 0			$ 0
Investment, Identifier [Axis]: Burning Glass Intermediate Holding Company, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[14],[19]	9.19%			9.19%
Spread		5.00%	[14],[19],[21]		5.00%	[14],[19],[21]		5.00%	[12],[20],[22],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				$ 0
Ending balance	[4],[14],[19]	$ 1,758			$ 1,758
Investment, Identifier [Axis]: Burning Glass Intermediate Holding Company, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		9.45%	[14],[19]		9.45%	[14],[19]		9.46%	[12],[20]
Spread		5.00%	[14],[19],[21]		5.00%	[14],[19],[21]		5.00%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 17,915
Ending balance	[4],[14],[19]	$ 16,956			16,956
Investment, Identifier [Axis]: CAI Software LLC, Preferred Equity 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2]				2,417
Ending balance	[4]	3,510			3,510
Investment, Identifier [Axis]: CAI Software LLC, Preferred Equity 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2]				0
Ending balance	[4]	0			0
Investment, Identifier [Axis]: CBT Nuggets, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(580)		(590)
Amount of Interest, Fees or Dividends Credited to Income					1,235		1,235
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					49,540	[13]	50,130
Gross Additions					0		0
Gross Reductions					580		590
Ending balance		$ 48,960	[4],[15]	49,540	$ 48,960	[4],[15]	49,540
Investment, Identifier [Axis]: CQ Fluency, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.00%	[14],[19],[21],[24]		7.00%	[14],[19],[21],[24]		6.75%	[12],[20],[22],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				$ (47)
Ending balance	[4],[14],[19],[24]	$ (38)			$ (38)
Investment, Identifier [Axis]: CQ Fluency, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[14],[19]	11.40%			11.40%
Spread		7.00%	[14],[19],[21]		7.00%	[14],[19],[21]		6.75%	[12],[20],[22],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				$ (47)
Ending balance	[4],[14],[19]	$ 10,547			10,547
Investment, Identifier [Axis]: CQ Fluency, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[12],[20]							11.18%
Spread	[12],[20],[22]							6.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				10,754
Investment, Identifier [Axis]: Café Brazil, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(190)		(189)
Amount of Interest, Fees or Dividends Credited to Income					34		20
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,200	[13]	1,980
Gross Additions					0		0
Gross Reductions					190		190
Ending balance		$ 1,010	[4],[15]	1,790	$ 1,010	[4],[15]	1,790
Investment, Identifier [Axis]: California Splendor Holdings LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Total Rate		15.00%	[15]		15.00%	[15]		15.00%	[13]
PIK Rate		15.00%	[7],[15]		15.00%	[7],[15]		15.00%	[8],[13]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							125
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 10,909	[13]	15,695
Gross Additions							0
Gross Reductions							0
Ending balance		$ 11,732	[4],[15]	$ 15,695	11,732	[4],[15]	$ 15,695
Investment, Identifier [Axis]: California Splendor Holdings LLC, Preferred Member Units 1.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(6,940)
Amount of Interest, Fees or Dividends Credited to Income					125
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					22,215
Gross Additions					0
Gross Reductions					6,940
Ending balance		15,275			15,275
Investment, Identifier [Axis]: California Splendor Holdings LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Total Rate				15.00%			15.00%
PIK Rate				15.00%			15.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							572
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					22,215	[13]	4,601
Gross Additions							5,572
Gross Reductions							0
Ending balance		$ 15,275	[4],[15]	$ 10,173	$ 15,275	[4],[15]	$ 10,173
Investment, Identifier [Axis]: California Splendor Holdings LLC, Preferred Member Units 2.1
Schedule of Investments [Line Items]
Total Rate		15.00%			15.00%
PIK Rate		15.00%			15.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					823
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					10,909
Gross Additions					823
Gross Reductions					0
Ending balance		$ 11,732			11,732
Investment, Identifier [Axis]: California Splendor Holdings LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate				14.00%			14.00%
PIK Rate				4.00%			4.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(79)
Amount of Interest, Fees or Dividends Credited to Income							2,088
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							27,655
Gross Additions							299
Gross Reductions							79
Ending balance				$ 27,875			27,875
Investment, Identifier [Axis]: California Splendor Holdings LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate								14.00%
PIK Rate	[8]							4.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,506
Ending balance	[4],[24]	$ (16)			$ (16)
Investment, Identifier [Axis]: California Splendor Holdings LLC, Secured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		14.00%			14.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					388
Amount of Interest, Fees or Dividends Credited to Income					1,933
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					28,465
Gross Additions					593
Gross Reductions					3,292
Ending balance		$ 25,766			$ 25,766
Investment, Identifier [Axis]: California Splendor Holdings LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.00%			14.00%			14.00%
PIK Rate	[8]							4.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 28,465
Ending balance	[4]	$ 25,766			25,766
Investment, Identifier [Axis]: California Splendor Holdings LLC, Secured Debt 2.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					44
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,506
Gross Additions					18
Gross Reductions					1,540
Ending balance		(16)			(16)
Investment, Identifier [Axis]: Career Team Holdings, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(186)		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,740	[2]	4,500
Gross Additions					666		0
Gross Reductions					186		0
Ending balance		$ 5,220	[4]	$ 4,500	$ 5,220	[4]	$ 4,500
Investment, Identifier [Axis]: Career Team Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				11.38%			11.38%	10.56%	[20]
Spread		6.00%	[19],[21],[24]	6.00%	6.00%	[19],[21],[24]	6.00%	6.00%	[20],[22]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					95		53
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					887	[2],[20]	881
Gross Additions					0		1,803
Gross Reductions					936		1,800
Ending balance		$ (49)	[4],[19],[24]	$ 884	$ (49)	[4],[19],[24]	$ 884
Investment, Identifier [Axis]: Career Team Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%		13.00%	12.50%		13.00%	12.50%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					1,341		1,330
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					19,364	[2]	19,906
Gross Additions					2,298		21
Gross Reductions					203		180
Ending balance		$ 21,459	[4]	$ 19,747	21,459	[4]	19,747
Investment, Identifier [Axis]: CaseWorthy, Inc., Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				490
Ending balance	[4],[14]	660			660
Investment, Identifier [Axis]: CenterPeak Holdings, LLC, Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[13]				14,550
Ending balance	[4],[15]	18,770			18,770
Investment, Identifier [Axis]: CenterPeak Holdings, LLC, Secured Debt 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[25]				0
Ending balance	[4],[24]	$ 0			$ 0
Investment, Identifier [Axis]: CenterPeak Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.00%			15.00%			15.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2]				$ 21,507
Ending balance	[4]	$ 21,507			21,507
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					4,140		460
Amount of Interest, Fees or Dividends Credited to Income					60		60
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					12,410		11,040
Gross Additions					4,140		460
Gross Reductions					0		0
Ending balance		$ 16,550	[4]	$ 11,500	$ 16,550	[4]	$ 11,500
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		10.00%	[19],[21],[24]	10.00%	10.00%	[19],[21],[24]	10.00%	9.00%	[20],[22],[25]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					6		6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[20],[25]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0	[4],[19],[24]	$ 0	$ 0	[4],[19],[24]	$ 0
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.48%	[19]	15.48%	14.48%	[19]	15.48%	13.66%	[20]
Spread		10.00%	[19],[21]	10.00%	10.00%	[19],[21]	10.00%	9.00%	[20],[22]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(8)		223
Amount of Interest, Fees or Dividends Credited to Income					1,775		1,383
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					25,534	[20]	0
Gross Additions					8		21,974
Gross Reductions					1,078		1,512
Ending balance		$ 24,464	[4],[19]	$ 20,462	24,464	[4],[19]	20,462
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							(62)
Amount of Interest, Fees or Dividends Credited to Income							281
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							17,574
Gross Additions							0
Gross Reductions							17,574
Ending balance				0			0
Investment, Identifier [Axis]: Chamberlin Holding LLC, Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(820)
Amount of Interest, Fees or Dividends Credited to Income					4,758
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					33,110
Gross Additions					0
Gross Reductions					820
Ending balance		32,290			32,290
Investment, Identifier [Axis]: Chamberlin Holding LLC, Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							710
Amount of Interest, Fees or Dividends Credited to Income							3,396
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					33,110	[13]	29,320
Gross Additions							710
Gross Reductions							0
Ending balance		32,290	[4],[15]	30,030	32,290	[4],[15]	30,030
Investment, Identifier [Axis]: Chamberlin Holding LLC, Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					140		290
Amount of Interest, Fees or Dividends Credited to Income					46		46
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					3,550	[13],[30]	2,860
Gross Additions					140		290
Gross Reductions					0		0
Ending balance		$ 3,690	[4],[15],[29]	$ 3,150	$ 3,690	[4],[15],[29]	$ 3,150
Investment, Identifier [Axis]: Chamberlin Holding LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.00%	[19],[21],[24]	6.00%	6.00%	[19],[21],[24]	6.00%	6.00%	[20],[22],[25]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(45)		(45)
Amount of Interest, Fees or Dividends Credited to Income					49		49
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[20],[25]	0
Gross Additions					45		45
Gross Reductions					45		45
Ending balance		$ 0	[4],[19],[24]	$ 0	$ 0	[4],[19],[24]	$ 0
Investment, Identifier [Axis]: Chamberlin Holding LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.49%	[19]	13.49%	12.49%	[19]	13.49%	12.74%	[20]
Spread		8.00%	[19],[21]	8.00%	8.00%	[19],[21]	8.00%	8.00%	[20],[22]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					4		(1)
Amount of Interest, Fees or Dividends Credited to Income					1,064		1,066
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					15,620	[20]	15,620
Gross Additions					3,200		1
Gross Reductions					0		1
Ending balance		$ 18,820	[4],[19]	$ 15,620	$ 18,820	[4],[19]	15,620
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.57%	[14],[18],[19]		11.57%	[14],[18],[19]		11.53%	[12],[20],[28]
Spread		7.00%	[14],[18],[19],[21]		7.00%	[14],[18],[19],[21]		7.00%	[12],[20],[22],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[28]				$ 4,830
Ending balance	[4],[14],[18],[19]	$ 4,322			$ 4,322
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.55%	[14],[19]		11.55%	[14],[19]		11.93%	[12],[20]
Spread		7.00%	[14],[19],[21]		7.00%	[14],[19],[21]		7.00%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 34,431
Ending balance	[4],[14],[19]	$ 35,747			$ 35,747
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.55%	[14],[19]		11.55%	[14],[19]		11.93%	[12],[20]
Spread		7.00%	[14],[19],[21]		7.00%	[14],[19],[21]		7.00%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 1,908
Ending balance	[4],[14],[19]	$ 1,980			$ 1,980
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		11.55%	[14],[19]		11.55%	[14],[19]		11.93%	[12],[20]
Spread		7.00%	[14],[19],[21]		7.00%	[14],[19],[21]		7.00%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 4,610
Ending balance	[4],[14],[19]	$ 4,787			4,787
Investment, Identifier [Axis]: Charps, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(220)		(110)
Amount of Interest, Fees or Dividends Credited to Income					536		155
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					15,580	[13]	15,690
Gross Additions					0		0
Gross Reductions					220		110
Ending balance		$ 15,360	[4],[15]	$ 15,580	$ 15,360	[4],[15]	$ 15,580
Investment, Identifier [Axis]: Charps, LLC, Unsecured Debt
Schedule of Investments [Line Items]
Total Rate		14.00%		10.00%	14.00%		10.00%	10.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(49)		(244)
Amount of Interest, Fees or Dividends Credited to Income					444		528
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,694		5,694
Gross Additions					50		244
Gross Reductions					50		244
Ending balance		$ 5,694	[4]	$ 5,694	5,694	[4]	5,694
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					1,300		1,010
Amount of Interest, Fees or Dividends Credited to Income					811		422
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					10,990	[2],[13]	5,200
Gross Additions					1,300		1,010
Gross Reductions					0		0
Ending balance		12,290	[4],[15]	6,210	12,290	[4],[15]	6,210
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					320		(179)
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					950	[2],[30]	1,129
Gross Additions					320		0
Gross Reductions					0		179
Ending balance		1,270	[4],[29]	950	1,270	[4],[29]	950
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					1		1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[25]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0	[4],[24]	$ 0	$ 0	[4],[24]	$ 0
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		9.00%		11.50%	9.00%		11.50%	9.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(5)		0
Amount of Interest, Fees or Dividends Credited to Income					312		512
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					6,760		8,422
Gross Additions					5		0
Gross Reductions					485		621
Ending balance		$ 6,280	[4]	$ 7,801	$ 6,280	[4]	$ 7,801
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.00%		10.00%	10.00%		10.00%	10.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					48		51
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					973	[2]	1,004
Gross Additions					0		0
Gross Reductions					22		19
Ending balance		$ 951	[4]	$ 985	951	[4]	985
Investment, Identifier [Axis]: Clarius BIGS, LLC, Secured Debt
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[17],[23]				19
Ending balance	[4],[9],[14],[16]	8			8
Investment, Identifier [Axis]: Classic H&G Holdings, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		10,365
Amount of Unrealized Gain/(Loss)					(890)		(7,771)
Amount of Interest, Fees or Dividends Credited to Income					0		1,470
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,850	[2],[13]	16,000
Gross Additions					0		10,365
Gross Reductions					890		23,896
Ending balance		1,960	[4]	$ 2,469	1,960	[4]	$ 2,469
Investment, Identifier [Axis]: Classic H&G Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread				6.00%			6.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							181
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							4,560
Gross Additions							0
Gross Reductions							4,560
Ending balance				$ 0			0
Investment, Identifier [Axis]: Classic H&G Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							(50)
Amount of Interest, Fees or Dividends Credited to Income							654
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							19,274
Gross Additions							50
Gross Reductions							19,324
Ending balance				0			0
Investment, Identifier [Axis]: Cody Pools, Inc., Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(660)		2,010
Amount of Interest, Fees or Dividends Credited to Income					1,344		1,508
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					67,810	[2],[13],[30]	72,470
Gross Additions					0		2,010
Gross Reductions					660		0
Ending balance		$ 67,150	[4],[15],[29]	74,480	$ 67,150	[4],[15],[29]	74,480
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.50%			12.50%
Amount of Realized Gain/(Loss)					$ 0		0
Amount of Unrealized Gain/(Loss)					(3)		4
Amount of Interest, Fees or Dividends Credited to Income					119		31
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2],[25]	0
Gross Additions					4,197		1,264
Gross Reductions					425		1,264
Ending balance		$ 3,772	[4]	$ 0	$ 3,772	[4]	$ 0
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%		12.50%	12.50%		12.50%	12.50%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(6)		(6)
Amount of Interest, Fees or Dividends Credited to Income					2,375		2,604
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					39,227	[2]	42,073
Gross Additions					7		6
Gross Reductions					2,154		1,278
Ending balance		$ 37,080	[4]	$ 40,801	37,080	[4]	40,801
Investment, Identifier [Axis]: Colonial Electric Company LLC, Preferred Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[13]				13,570
Ending balance	[4],[15]	15,270			15,270
Investment, Identifier [Axis]: Colonial Electric Company LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							(1,440)
Amount of Interest, Fees or Dividends Credited to Income							1,440
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							2,400
Gross Additions							0
Gross Reductions							2,400
Ending balance				0			0
Investment, Identifier [Axis]: Colonial Electric Company LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							4,060
Amount of Interest, Fees or Dividends Credited to Income							556
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							7,680
Gross Additions							4,060
Gross Reductions							0
Ending balance				11,740			11,740
Investment, Identifier [Axis]: Colonial Electric Company LLC, Secured Debt 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					4		4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2],[25]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0	[4],[24]	$ 0	$ 0	[4],[24]	$ 0
Investment, Identifier [Axis]: Colonial Electric Company LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%	12.00%		12.00%	12.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(19)		385
Amount of Interest, Fees or Dividends Credited to Income					833		1,246
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					14,310	[2]	21,627
Gross Additions					19		423
Gross Reductions					2,835		3,910
Ending balance		$ 11,494	[4]	$ 18,140	11,494	[4]	18,140
Investment, Identifier [Axis]: Colonial Electric Company LLC,Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					1,700
Amount of Interest, Fees or Dividends Credited to Income					1,871
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					13,570
Gross Additions					1,700
Gross Reductions					0
Ending balance		15,270			15,270
Investment, Identifier [Axis]: CompareNetworks Topco, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(1,630)		(1,520)
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					11,260	[2]	14,450
Gross Additions					0		0
Gross Reductions					1,630		1,520
Ending balance		$ 9,630	[4]	$ 12,930	$ 9,630	[4]	$ 12,930
Investment, Identifier [Axis]: CompareNetworks Topco, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.48%	[19]		13.48%	[19]		13.66%	[20]
Spread		9.00%	[19],[21]		9.00%	[19],[21]		9.00%	[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[20]				$ 2,903
Ending balance	[4],[19]	$ 2,704			$ 2,704
Investment, Identifier [Axis]: CompareNetworks Topco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread				9.00%			9.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							0
Gross Additions							0
Gross Reductions							0
Ending balance				$ 0			$ 0
Investment, Identifier [Axis]: CompareNetworks Topco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.48%		14.48%	13.48%		14.48%
Spread		9.00%		9.00%	9.00%		9.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					204		247
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,903		3,454
Gross Additions					11		0
Gross Reductions					210		357
Ending balance		$ 2,704		$ 3,097	2,704		3,097
Investment, Identifier [Axis]: Compass Systems & Sales, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					4		496
Amount of Interest, Fees or Dividends Credited to Income					120		120
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					7,450	[2]	7,454
Gross Additions					4		496
Gross Reductions					0		0
Ending balance		7,454	[4]	$ 7,950	7,454	[4]	$ 7,950
Investment, Identifier [Axis]: Compass Systems & Sales, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				13.50%			13.50%
Amount of Realized Gain/(Loss)					0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					3		42
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					(21)	[2],[25]	0
Gross Additions					3		1,584
Gross Reductions					0		0
Ending balance		$ (18)	[4],[24]	$ 1,584	$ (18)	[4],[24]	$ 1,584
Investment, Identifier [Axis]: Compass Systems & Sales, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.50%		13.50%	13.50%		13.50%	13.50%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(139)		0
Amount of Interest, Fees or Dividends Credited to Income					1,184		1,191
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					17,067	[2]	17,034
Gross Additions					17		17
Gross Reductions					140		0
Ending balance		$ 16,944	[4]	$ 17,051	$ 16,944	[4]	17,051
Investment, Identifier [Axis]: Computer Data Source, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.69%	[14],[18],[19]		12.69%	[14],[18],[19]		12.93%	[12],[20],[28]
Spread		8.25%	[14],[18],[19],[21]		8.25%	[14],[18],[19],[21]		8.25%	[12],[20],[22],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[28]				$ 7,341
Ending balance	[4],[14],[18],[19]	$ 7,625			$ 7,625
Investment, Identifier [Axis]: Computer Data Source, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[14],[19]	12.70%			12.70%
Spread		8.25%	[14],[19],[21]		8.25%	[14],[19],[21]		8.25%	[12],[20],[22],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				$ (113)
Ending balance	[4],[14],[19]	$ 18,583			18,583
Investment, Identifier [Axis]: Computer Data Source, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[12],[20]							12.92%
Spread	[12],[20],[22]							8.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				17,769
Investment, Identifier [Axis]: Congruent Credit Opportunities Funds, LP Interests (Congruent Credit Opportunities Fund III, LP)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(78)
Amount of Interest, Fees or Dividends Credited to Income					69
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[13],[34],[38],[39]				2,276
Gross Additions					0
Gross Reductions					1,614
Ending balance		662			662
Investment, Identifier [Axis]: Congruent Credit Opportunities Funds, LP Interests (Congruent Credit Opportunities Fund III, LP)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[15],[36],[40],[41]	662			662
Investment, Identifier [Axis]: Congruent Credit Opportunities Funds, LP Interests (Congruent Credit Opportunities Fund III, LP)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							(51)
Amount of Interest, Fees or Dividends Credited to Income							152
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							4,352
Gross Additions							0
Gross Reductions							1,810
Ending balance				2,542			2,542
Investment, Identifier [Axis]: Connect Telecommunications Solutions Holdings, Inc., Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[34]				12,596
Gross Additions					0
Gross Reductions					0
Ending balance	[4],[36]	$ 12,596			$ 12,596
Investment, Identifier [Axis]: Connect Telecommunications Solutions Holdings, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.00%			13.00%			13.00%	[34]
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					1,801
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[34]				27,315
Gross Additions					46
Gross Reductions					2,160
Ending balance		$ 25,201			$ 25,201
Investment, Identifier [Axis]: Connect Telecommunications Solutions Holdings, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate	[36]	13.00%			13.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[36]	$ 25,201			$ 25,201
Investment, Identifier [Axis]: Copper Trail Fund Investments, LP Interests (CTMH, LP)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					500	[2],[34],[38],[39]	568
Gross Additions					15		0
Gross Reductions					0		0
Ending balance		$ 515	[4],[36],[40],[41]	568	$ 515	[4],[36],[40],[41]	568
Investment, Identifier [Axis]: Coregistics Buyer LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.83%	[14],[18],[19],[36],[37]		10.83%	[14],[18],[19],[36],[37]		10.39%	[12],[20],[28],[34],[35]
Spread		6.50%	[14],[18],[19],[21],[36],[37]		6.50%	[14],[18],[19],[21],[36],[37]		6.00%	[12],[20],[22],[28],[34],[35]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[28],[34],[35]				$ 1,639
Ending balance	[4],[14],[18],[19],[36],[37]	$ 1,669			$ 1,669
Investment, Identifier [Axis]: Coregistics Buyer LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.83%	[14],[19],[36],[37]		10.83%	[14],[19],[36],[37]		10.36%	[12],[20],[34],[35]
Spread		6.50%	[14],[19],[21],[36],[37]		6.50%	[14],[19],[21],[36],[37]		6.00%	[12],[20],[22],[34],[35]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[34],[35]				$ 10,507
Ending balance	[4],[14],[19],[36],[37]	$ 10,623			$ 10,623
Investment, Identifier [Axis]: Coregistics Buyer LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.83%	[14],[19],[36],[37]		10.83%	[14],[19],[36],[37]		10.40%	[12],[20],[34],[35]
Spread		6.50%	[14],[19],[21],[36],[37]		6.50%	[14],[19],[21],[36],[37]		6.00%	[12],[20],[22],[34],[35]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[34],[35]				$ 6,987
Ending balance	[4],[14],[19],[36],[37]	$ 7,082			$ 7,082
Investment, Identifier [Axis]: Coregistics Buyer LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		11.08%	[14],[19],[36],[37]		11.08%	[14],[19],[36],[37]		10.61%	[12],[20],[34],[35]
Spread		6.75%	[14],[19],[21],[36],[37]		6.75%	[14],[19],[21],[36],[37]		6.25%	[12],[20],[22],[34],[35]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[34],[35]				$ 30,165
Ending balance	[4],[14],[19],[36],[37]	$ 32,060			32,060
Investment, Identifier [Axis]: Creative Foam Corporation, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14]	$ 1,085			$ 1,085
Investment, Identifier [Axis]: Creative Foam Corporation, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.25%	[14],[19],[21],[24]		6.25%	[14],[19],[21],[24]		5.75%	[12],[20],[22],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				$ (272)
Ending balance	[4],[14],[19],[24]	$ (210)			$ (210)
Investment, Identifier [Axis]: Creative Foam Corporation, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.55%	[14],[19]		10.55%	[14],[19]		10.11%	[12],[20]
Spread		6.25%	[14],[19],[21]		6.25%	[14],[19],[21]		5.75%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 105,229
Ending balance	[4],[14],[19]	$ 90,939			$ 90,939
Investment, Identifier [Axis]: Creative Foam Corporation, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[14],[19]	10.57%			10.57%
Spread	[14],[19],[21]	6.25%			6.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 5,671			$ 5,671
Investment, Identifier [Axis]: Cybermedia Technologies, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					1,000
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					3,500
Gross Reductions					100
Ending balance	[4]	3,400			3,400
Investment, Identifier [Axis]: Cybermedia Technologies, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(15,000)		1,020
Amount of Interest, Fees or Dividends Credited to Income					125		1,041
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					15,000	[2],[13]	15,000
Gross Additions					0		1,020
Gross Reductions					15,000		0
Ending balance		0	[4]	16,020	0	[4]	16,020
Investment, Identifier [Axis]: Cybermedia Technologies, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					5		5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2],[25]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0	[4],[24]	$ 0	$ 0	[4],[24]	$ 0
Investment, Identifier [Axis]: Cybermedia Technologies, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%		13.00%	13.00%		13.00%	13.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(592)		0
Amount of Interest, Fees or Dividends Credited to Income					1,810		1,881
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					27,116	[2]	28,389
Gross Additions					28		35
Gross Reductions					681		975
Ending balance		$ 26,463	[4]	$ 27,449	26,463	[4]	27,449
Investment, Identifier [Axis]: DMA Industries, LLC, Preferred Equity 1.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					350
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,944
Gross Additions					350
Gross Reductions					0
Ending balance		$ 6,294			$ 6,294
Investment, Identifier [Axis]: DMA Industries, LLC, Secured Debt 2.1
Schedule of Investments [Line Items]
Total Rate		12.00%			12.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					34
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					555
Gross Additions					1
Gross Reductions					0
Ending balance		$ 556			556
Investment, Identifier [Axis]: DMA Industries, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							(1,716)
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							7,660
Gross Additions							3,068
Gross Reductions							1,716
Ending balance				$ 9,012			$ 9,012
Investment, Identifier [Axis]: DMA Industries, LLC, Preferred Equity 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2]				5,944
Ending balance	[4]	$ 6,294			$ 6,294
Investment, Identifier [Axis]: DMA Industries, LLC, Preferred Equity 2
Schedule of Investments [Line Items]
Total Rate		15.00%	[15]		15.00%	[15]		15.00%	[13]
PIK Rate		15.00%	[7],[15]		15.00%	[7],[15]		15.00%	[8],[13]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[13]				$ 3,240
Ending balance	[4],[15]	$ 3,665			$ 3,665
Investment, Identifier [Axis]: DMA Industries, LLC, Preferred Equity 2.1
Schedule of Investments [Line Items]
Total Rate		15.00%			15.00%
PIK Rate		15.00%			15.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					180
Amount of Interest, Fees or Dividends Credited to Income					245
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					3,240
Gross Additions					425
Gross Reductions					0
Ending balance		$ 3,665			$ 3,665
Investment, Identifier [Axis]: DMA Industries, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%	12.00%		12.00%	12.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(28)
Amount of Interest, Fees or Dividends Credited to Income							1,139
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 555	[2]	18,800
Gross Additions							28
Gross Reductions							2,028
Ending balance		$ 556	[4]	$ 16,800	$ 556	[4]	$ 16,800
Investment, Identifier [Axis]: DMA Industries, LLC, Secured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		12.00%			12.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					1,022
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					16,722
Gross Additions					8
Gross Reductions					0
Ending balance		$ 16,730			$ 16,730
Investment, Identifier [Axis]: DMA Industries, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%	12.00%		12.00%	12.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							6
Amount of Interest, Fees or Dividends Credited to Income							8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 16,722	[2]	0
Gross Additions							560
Gross Reductions							0
Ending balance		$ 16,730	[4]	$ 560	$ 16,730	[4]	560
Investment, Identifier [Axis]: DTE Enterprises, LLC, Class A Preferred Member Units
Schedule of Investments [Line Items]
Total Rate		8.00%	[14]		8.00%	[14]		8.00%	[12]
PIK Rate		8.00%	[7],[14]		8.00%	[7],[14]		8.00%	[8],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				$ 0
Ending balance	[4],[14]	$ 0			$ 0
Investment, Identifier [Axis]: DTE Enterprises, LLC, Class AA Preferred Member Units (non-voting)
Schedule of Investments [Line Items]
Total Rate		10.00%	[14]		10.00%	[14]		10.00%	[12],[13]
PIK Rate		10.00%	[7],[14]		10.00%	[7],[14]		10.00%	[8],[12],[13]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[13]				$ 438
Ending balance	[4],[14]	$ 0			0
Investment, Identifier [Axis]: Dalton US Inc., Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				690
Ending balance	[4],[14]	650			650
Investment, Identifier [Axis]: Datacom, LLC, (Secured Debt 1
Schedule of Investments [Line Items]
Total Rate								7.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2]				493
Investment, Identifier [Axis]: Datacom, LLC, (Secured Debt 2
Schedule of Investments [Line Items]
Total Rate								10.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2]				7,947
Investment, Identifier [Axis]: Datacom, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(600)		130
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					240	[2]	70
Gross Additions					360		130
Gross Reductions					600		0
Ending balance		$ 0	[4]	$ 200	$ 0	[4]	$ 200
Investment, Identifier [Axis]: Datacom, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		7.50%		7.50%	7.50%		7.50%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					36		14
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					493		447
Gross Additions					721		226
Gross Reductions					540		405
Ending balance		$ 674	[4]	$ 268	$ 674	[4]	$ 268
Investment, Identifier [Axis]: Datacom, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.00%		10.00%	10.00%		10.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(689)		0
Amount of Interest, Fees or Dividends Credited to Income					471		491
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					7,947		7,587
Gross Additions					68		73
Gross Reductions					823		135
Ending balance		$ 7,192	[4]	$ 7,525	7,192	[4]	7,525
Investment, Identifier [Axis]: Digital Products Holdings LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					100		100
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					9,835	[2],[13]	9,835
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 9,835	[4],[15]	$ 9,835	$ 9,835	[4],[15]	$ 9,835
Investment, Identifier [Axis]: Digital Products Holdings LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		14.38%	[19]	15.38%	14.38%	[19]	15.38%	14.56%	[20]
Spread		10.00%	[19],[21]	10.00%	10.00%	[19],[21]	10.00%	10.00%	[20],[22]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					898		1,116
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					12,422	[2],[20]	14,690
Gross Additions					23		34
Gross Reductions					660		1,453
Ending balance		$ 11,785	[4],[19]	$ 13,271	11,785	[4],[19]	13,271
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc., Preferred Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					540		(1,140)
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					17,930	[2]	20,740
Gross Additions					540		0
Gross Reductions					0		1,140
Ending balance		18,470	[4]	19,600	18,470	[4]	19,600
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(14)		(14)
Amount of Interest, Fees or Dividends Credited to Income					23		48
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2],[25]	1,233
Gross Additions					14		1,289
Gross Reductions					14		2,522
Ending balance		$ 0	[4],[24]	$ 0	$ 0	[4],[24]	$ 0
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.00%		14.00%	14.00%		14.00%	14.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(20)		(23)
Amount of Interest, Fees or Dividends Credited to Income					1,669		1,797
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					23,902	[2]	25,543
Gross Additions					20		23
Gross Reductions					840		843
Ending balance		$ 23,082	[4]	$ 24,723	23,082	[4]	24,723
Investment, Identifier [Axis]: Doral Holdings, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					13,000
Gross Reductions					0
Ending balance	[4]	13,000			13,000
Investment, Identifier [Axis]: Doral Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance	[4],[24]	$ 0			$ 0
Investment, Identifier [Axis]: Doral Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%			13.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					1,047
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					29,215
Gross Reductions					0
Ending balance	[4]	$ 29,215			29,215
Investment, Identifier [Axis]: Dos Rios Partners, LP Interests (Dos Rios Partners - A, LP)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					72		35
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,447	[2],[34],[38],[39]	2,631
Gross Additions					72		35
Gross Reductions					44		45
Ending balance		2,475	[4],[36],[40],[41]	2,621	2,475	[4],[36],[40],[41]	2,621
Investment, Identifier [Axis]: Dos Rios Partners, LP Interests (Dos Rios Partners, LP)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					226		111
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					7,708	[2],[34],[38],[39]	8,443
Gross Additions					226		111
Gross Reductions					139		142
Ending balance		7,795	[4],[36],[40],[41]	8,412	7,795	[4],[36],[40],[41]	8,412
Investment, Identifier [Axis]: Dos Rios Stone Products LLC, Class A Preferred Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		(250)
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2],[12],[30]	1,580
Gross Additions					0		0
Gross Reductions					0		250
Ending balance		$ 0	[4],[14],[29]	1,330	$ 0	[4],[14],[29]	1,330
Investment, Identifier [Axis]: Dreyfus Government Cash Management
Schedule of Investments [Line Items]
Total Rate		4.18%			4.18%			4.43%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[42]				$ 3,400
Ending balance	[4],[43]	$ 15,043			15,043
Investment, Identifier [Axis]: Dynamic Communities, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				0
Ending balance	[4],[14]	0			0
Investment, Identifier [Axis]: Dynamic Communities, LLC, Preferred Equity 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				60
Ending balance	[4],[14]	110			110
Investment, Identifier [Axis]: Dynamic Communities, LLC, Preferred Equity 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				0
Ending balance	[4],[14]	$ 0			$ 0
Investment, Identifier [Axis]: Dynamic Communities, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.43%	[14],[19]		11.43%	[14],[19]		11.46%	[12],[20]
Spread		7.00%	[14],[19],[21]		7.00%	[14],[19],[21]		7.00%	[12],[20],[22]
PIK Rate		11.43%	[7],[14],[19]		11.43%	[7],[14],[19]		11.46%	[8],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 2,220
Ending balance	[4],[14],[19]	$ 2,414			$ 2,414
Investment, Identifier [Axis]: Dynamic Communities, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.43%	[14],[19]		12.43%	[14],[19]		13.46%	[12],[20]
Spread		8.00%	[14],[19],[21]		8.00%	[14],[19],[21]		9.00%	[12],[20],[22]
PIK Rate	[8],[12],[20]							13.46%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 2,219
Ending balance	[4],[14],[19]	$ 2,383			2,383
Investment, Identifier [Axis]: EIG Fund Investments, LP Interests (EIG Global Private Debt Fund-A, L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					16		42
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					369	[2],[13],[34],[39]	760
Gross Additions					0		1
Gross Reductions					0		0
Ending balance		369	[4],[15],[36],[41]	761	369	[4],[15],[36],[41]	761
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[12],[20]							12.74%
Spread	[12],[20],[22]							8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				2,714
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[12],[20]							12.74%
Spread	[12],[20],[22]							8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				4,201
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[12],[20]							12.74%
Spread	[12],[20],[22]							8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				8,380
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[12],[20]							12.74%
Spread	[12],[20],[22]							8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				1,738
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 5
Schedule of Investments [Line Items]
Total Rate	[12],[20]							12.74%
Spread	[12],[20],[22]							8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				9,509
Investment, Identifier [Axis]: Electro Technical Industries, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14]	$ 1,464			$ 1,464
Investment, Identifier [Axis]: Electro Technical Industries, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread	[14],[19],[21],[24]	6.00%			6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19],[24]	$ (166)			$ (166)
Investment, Identifier [Axis]: Electro Technical Industries, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[14],[19]	10.33%			10.33%
Spread	[14],[19],[21]	6.00%			6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 50,286			$ 50,286
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Common Stock 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(570)		(360)
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,730	[2]	6,090
Gross Additions					0		0
Gross Reductions					570		360
Ending balance		5,160	[4]	5,730	5,160	[4]	5,730
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Common Stock 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					110		80
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					3,050	[2],[30]	1,670
Gross Additions					110		80
Gross Reductions					0		0
Ending balance		$ 3,160	[4],[29]	$ 1,750	$ 3,160	[4],[29]	$ 1,750
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.00%	[19],[21],[24]	6.00%	6.00%	[19],[21],[24]	6.00%	6.00%	[20],[22],[25]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					5		4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					(5)	[2],[20],[25]	(7)
Gross Additions					1		1
Gross Reductions					0		0
Ending balance		$ (4)	[4],[19],[24]	$ (6)	$ (4)	[4],[19],[24]	$ (6)
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%	12.00%		12.00%	12.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					1,099		1,133
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					17,969	[2]	18,632
Gross Additions					20		21
Gross Reductions					492		469
Ending balance		$ 17,497	[4]	$ 18,184	$ 17,497	[4]	$ 18,184
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		9.00%		9.00%	9.00%		9.00%	9.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					283		285
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					6,207	[2]	6,252
Gross Additions					1		2
Gross Reductions					26		24
Ending balance		$ 6,182	[4]	$ 6,230	$ 6,182	[4]	$ 6,230
Investment, Identifier [Axis]: Emerald Technologies Acquisition Co, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate		10.73%	[6],[19]		10.73%	[6],[19]		10.71%	[5],[20]
Spread		6.25%	[6],[19],[21]		6.25%	[6],[19],[21]		6.25%	[5],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5],[20]				$ 7,670
Ending balance	[4],[6],[19]	$ 6,620			6,620
Investment, Identifier [Axis]: EnCap Energy Fund Investments, LP Interests (EnCap Energy Capital Fund IX, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[13],[34],[38],[39]				1,088
Investment, Identifier [Axis]: EnCap Energy Fund Investments, LP Interests (EnCap Energy Capital Fund VIII Co-Investors, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[13],[34],[38],[39]				846
Investment, Identifier [Axis]: EnCap Energy Fund Investments, LP Interests (EnCap Energy Capital Fund VIII, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[13],[34],[38],[39]				1,754
Investment, Identifier [Axis]: EnCap Energy Fund Investments, LP Interests (EnCap Energy Capital Fund X, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[13],[34],[38],[39]				5,051
Investment, Identifier [Axis]: EnCap Energy Fund Investments, LP Interests (EnCap Energy Capital Fund XII, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[13],[34],[38],[39]				3,525
Investment, Identifier [Axis]: EnCap Energy Fund Investments, LP Interests (EnCap Flatrock Midstream Fund II, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[13],[34],[38],[39]				1,514
Investment, Identifier [Axis]: EnCap Energy Fund Investments, LP Interests (EnCap Flatrock Midstream Fund III, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[13],[34],[38],[39]				3,756
Investment, Identifier [Axis]: EnCap Energy Fund Investments., LP Interests (EnCap Energy Capital Fund IX, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[15],[36],[40],[41]	1,176			1,176
Investment, Identifier [Axis]: EnCap Energy Fund Investments., LP Interests (EnCap Energy Capital Fund VIII Co-Investors, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[15],[36],[40],[41]	817			817
Investment, Identifier [Axis]: EnCap Energy Fund Investments., LP Interests (EnCap Energy Capital Fund VIII, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[15],[36],[40],[41]	1,846			1,846
Investment, Identifier [Axis]: EnCap Energy Fund Investments., LP Interests (EnCap Energy Capital Fund X, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[15],[36],[40],[41]	4,814			4,814
Investment, Identifier [Axis]: EnCap Energy Fund Investments., LP Interests (EnCap Energy Capital Fund XII, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[15],[36],[40],[41]	4,165			4,165
Investment, Identifier [Axis]: EnCap Energy Fund Investments., LP Interests (EnCap Flatrock Midstream Fund II, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[15],[36],[40],[41]	1,143			1,143
Investment, Identifier [Axis]: EnCap Energy Fund Investments., LP Interests (EnCap Flatrock Midstream Fund III, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[15],[36],[40],[41]	2,815			2,815
Investment, Identifier [Axis]: Escalent, Inc., Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[13]				910
Ending balance	[4],[14],[15]	$ 910			$ 910
Investment, Identifier [Axis]: Escalent, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.00%	[14],[19],[21],[24]		6.00%	[14],[19],[21],[24]		8.00%	[12],[20],[22],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				$ (28)
Ending balance	[4],[14],[19],[24]	$ (25)			$ (25)
Investment, Identifier [Axis]: Escalent, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.30%	[14],[19]		10.30%	[14],[19]		12.39%	[12],[20]
Spread		6.00%	[14],[19],[21]		6.00%	[14],[19],[21]		8.00%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 1,359
Ending balance	[4],[14],[19]	$ 1,375			$ 1,375
Investment, Identifier [Axis]: Escalent, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.30%	[14],[19]		10.30%	[14],[19]		12.43%	[12],[20]
Spread		6.00%	[14],[19],[21]		6.00%	[14],[19],[21]		8.00%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 26,048
Ending balance	[4],[14],[19]	$ 25,915			25,915
Investment, Identifier [Axis]: Event Holdco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[12],[20]							12.59%
Spread	[12],[20],[22]							8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				3,692
Investment, Identifier [Axis]: Event Holdco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[12],[20]							12.59%
Spread	[12],[20],[22]							8.00%
PIK Rate	[8],[12],[20]							6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 47,633
Investment, Identifier [Axis]: Event Holdco, LLC., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[14],[19]	12.56%			12.56%
Spread	[14],[19],[21]	8.00%			8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 3,692			$ 3,692
Investment, Identifier [Axis]: Event Holdco, LLC., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[14],[19]	12.56%			12.56%
Spread	[14],[19],[21]	8.00%			8.00%
PIK Rate	[7],[14],[19]	4.00%			4.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 48,317			$ 48,317
Investment, Identifier [Axis]: FCC Intermediate Holdco, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.00%		13.00%	13.00%		13.00%	13.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					3,191		0
Amount of Interest, Fees or Dividends Credited to Income					2,603		1,198
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					29,109	[2]	0
Gross Additions					3,691		28,691
Gross Reductions					820		0
Ending balance		$ 31,980		$ 28,691	$ 31,980		28,691
Investment, Identifier [Axis]: FCC Intermediate Holdco, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.00%			13.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4]	$ 31,980			$ 31,980
Investment, Identifier [Axis]: FCC Intermediate Holdco, LLC, Warrants
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					3,790		0
Amount of Interest, Fees or Dividends Credited to Income					570		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					10,840	[2],[10]	0
Gross Additions					3,790		3,920
Gross Reductions					0		0
Ending balance		14,630	[4],[11],[15]	3,920	14,630	[4],[11],[15]	3,920
Investment, Identifier [Axis]: Fidelity Government Fund
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[44]	$ 3,353			3,353
Investment, Identifier [Axis]: Fidelity Government Fund
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[28]				$ 1,526
Investment, Identifier [Axis]: Fidelity Treasury
Schedule of Investments [Line Items]
Total Rate		3.95%			3.95%			4.10%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[45]				$ 1,548
Ending balance	[4],[46]	$ 645			645
Investment, Identifier [Axis]: Flame King Holdings, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					5,450		7,850
Amount of Interest, Fees or Dividends Credited to Income					6,952		1,570
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					35,920	[2],[13]	27,900
Gross Additions					5,450		7,850
Gross Reductions					0		0
Ending balance		$ 41,370	[4],[15]	35,750	$ 41,370	[4],[15]	35,750
Investment, Identifier [Axis]: Flame King Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%			12.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					671
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					65,351
Gross Reductions					0
Ending balance	[4]	$ 65,351			65,351
Investment, Identifier [Axis]: Freeport Financial Funds, LP Interests (Freeport Financial SBIC Fund LP)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[34],[38],[39]				2,190
Ending balance	[4],[36],[40],[41]	1,843			1,843
Investment, Identifier [Axis]: Freeport Financial Funds, LP Interests (Freeport First Lien Loan Fund III LP)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[13],[34],[38],[39]				1,263
Ending balance	[4],[36],[40],[41]	193			193
Investment, Identifier [Axis]: Freeport Financial SBIC Fund LP, LP Interests (Freeport Financial SBIC Fund LP)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(347)		(77)
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,190		3,012
Gross Additions					0		0
Gross Reductions					347		356
Ending balance		1,843		2,656	1,843		2,656
Investment, Identifier [Axis]: Freeport Financial SBIC Fund LP, LP Interests (Freeport First Lien Loan Fund III LP)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(82)		0
Amount of Interest, Fees or Dividends Credited to Income					(23)		255
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,263		3,704
Gross Additions					0		1
Gross Reductions					1,070		1,109
Ending balance		193		2,596	193		2,596
Investment, Identifier [Axis]: Fuse, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5]				0
Investment, Identifier [Axis]: Fuse, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[5],[13]							12.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5],[13]				932
Investment, Identifier [Axis]: Fuse, LLC., Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[6]	$ 0			$ 0
Investment, Identifier [Axis]: Fuse, LLC., Secured Debt
Schedule of Investments [Line Items]
Total Rate	[6]	12.00%			12.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[6]	$ 722			$ 722
Investment, Identifier [Axis]: GFG Group, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(430)		(1,650)
Amount of Interest, Fees or Dividends Credited to Income					582		781
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					10,540	[2],[13]	11,460
Gross Additions					0		0
Gross Reductions					430		1,650
Ending balance		$ 10,110	[4],[15]	$ 9,810	$ 10,110	[4],[15]	$ 9,810
Investment, Identifier [Axis]: GFG Group, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		8.00%		8.00%	8.00%		8.00%	8.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(10)
Amount of Interest, Fees or Dividends Credited to Income							388
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 8,185	[2]	9,345
Gross Additions							10
Gross Reductions							10
Ending balance		$ 9,253	[4]	$ 9,345	9,253	[4]	9,345
Investment, Identifier [Axis]: GFG Group, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(21)
Amount of Interest, Fees or Dividends Credited to Income					185
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					8,185
Gross Additions					0
Gross Reductions					8,185
Ending balance		$ 0			$ 0
Investment, Identifier [Axis]: GFG Group, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		8.00%			8.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					185
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					9,253
Gross Reductions					0
Ending balance		$ 9,253			9,253
Investment, Identifier [Axis]: GRT Rubber Technologies LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					930		0
Amount of Interest, Fees or Dividends Credited to Income					3,128		84
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					45,890	[2]	44,440
Gross Additions					930		0
Gross Reductions					0		0
Ending balance		$ 46,820	[4],[15]	$ 44,440	$ 46,820	[4],[15]	$ 44,440
Investment, Identifier [Axis]: GRT Rubber Technologies LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.48%		11.48%	10.48%		11.48%	10.66%
Spread		6.00%	[21]	6.00%	6.00%	[21]	6.00%	6.00%	[22]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(2)		2
Amount of Interest, Fees or Dividends Credited to Income					167		163
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					3,146	[2]	2,400
Gross Additions					2		746
Gross Reductions					2		0
Ending balance		$ 3,146	[4]	$ 3,146	$ 3,146	[4]	$ 3,146
Investment, Identifier [Axis]: GRT Rubber Technologies LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.48%		13.48%	12.48%		13.48%	12.66%
Spread		8.00%	[21]	8.00%	8.00%	[21]	8.00%	8.00%	[22]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(23)		(23)
Amount of Interest, Fees or Dividends Credited to Income					2,561		2,782
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					40,493	[2]	40,493
Gross Additions					23		23
Gross Reductions					23		23
Ending balance		$ 40,493	[4]	$ 40,493	40,493	[4]	40,493
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[12],[20],[28]							11.12%
Spread	[12],[20],[22],[28]							6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[28]				1,864
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[12],[20]							11.24%
Spread	[12],[20],[22]							6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				10,509
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[12],[20]							11.24%
Spread	[12],[20],[22]							6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				942
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[12],[20]							11.24%
Spread	[12],[20],[22]							6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				225
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC, Secured Debt 5
Schedule of Investments [Line Items]
Total Rate	[12],[20]							10.98%
Spread	[12],[20],[22]							6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 6,076
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC., Secured Debt 1
Schedule of Investments [Line Items]
Spread	[14],[19],[21],[24]	6.50%			6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19],[24]	$ 0			$ 0
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[14],[19]	10.93%			10.93%
Spread	[14],[19],[21]	6.50%			6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 10,447			$ 10,447
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[14],[19]	10.93%			10.93%
Spread	[14],[19],[21]	6.50%			6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 937			$ 937
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC., Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[14],[19]	10.93%			10.93%
Spread	[14],[19],[21]	6.50%			6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 224			$ 224
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC., Secured Debt 5
Schedule of Investments [Line Items]
Total Rate	[14],[19]	10.93%			10.93%
Spread	[14],[19],[21]	6.50%			6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 6,042			$ 6,042
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[12],[20],[28]							10.50%
Spread	[12],[20],[22],[28]							6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[28]				662
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[12],[20]							10.55%
Spread	[12],[20],[22]							6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				279
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[12],[20]							10.46%
Spread	[12],[20],[22]							6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 3,350
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[14],[18],[19]	11.42%			11.42%
Spread	[14],[18],[19],[21]	7.00%			7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[18],[19]	$ 418			$ 418
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[14],[19]	11.41%			11.41%
Spread	[14],[19],[21]	7.00%			7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 273			$ 273
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[14],[19]	11.43%			11.43%
Spread	[14],[19],[21]	7.00%			7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 3,277			$ 3,277
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					3,484
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[13]				114,750
Gross Additions					0
Gross Reductions					0
Ending balance		114,750			114,750
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							9,840
Amount of Interest, Fees or Dividends Credited to Income							3,001
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							96,710
Gross Additions							9,840
Gross Reductions							0
Ending balance		$ 114,750	[4],[15]	$ 106,550	$ 114,750	[4],[15]	$ 106,550
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, SF, Secured Debt
Schedule of Investments [Line Items]
Spread		7.50%			7.50%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance		$ 0			$ 0
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.50%			11.50%
Spread		7.50%			7.50%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					(25)
Amount of Interest, Fees or Dividends Credited to Income					4,252
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					73,126
Gross Additions					25
Gross Reductions					825
Ending balance		$ 72,326			$ 72,326
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.50%	[19],[21],[24],[47]	7.50%	7.50%	[19],[21],[24],[47]	7.50%	7.00%	[20],[22],[25],[48]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 0	[2],[20],[25],[48]	0
Gross Additions							0
Gross Reductions							0
Ending balance		$ 0	[4],[19],[24],[47]	$ 0	$ 0	[4],[19],[24],[47]	$ 0
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.50%	[19],[47]	10.50%	11.50%	[19],[47]	10.50%	11.00%	[20],[48]
Spread		7.50%	[19],[21],[47]	7.50%	7.50%	[19],[21],[47]	7.50%	7.00%	[20],[22],[48]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(61)
Amount of Interest, Fees or Dividends Credited to Income							2,763
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 73,126	[2],[20],[48]	54,078
Gross Additions							61
Gross Reductions							4,861
Ending balance		$ 72,326	[4],[19],[47]	$ 49,278	72,326	[4],[19],[47]	49,278
Investment, Identifier [Axis]: Garreco, LLC, 0.115, SF, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(230)
Amount of Interest, Fees or Dividends Credited to Income					39
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,060
Gross Additions					0
Gross Reductions					230
Ending balance		1,830			1,830
Investment, Identifier [Axis]: Garreco, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							43
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,060	[2],[13]	1,580
Gross Additions							0
Gross Reductions							0
Ending balance		1,830	[4],[15]	$ 1,580	1,830	[4],[15]	$ 1,580
Investment, Identifier [Axis]: Garreco, LLC, Secured Debt
Schedule of Investments [Line Items]
Spread				8.00%			8.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							92
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							3,088
Gross Additions							0
Gross Reductions							3,088
Ending balance				$ 0			0
Investment, Identifier [Axis]: Garyline, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				500
Investment, Identifier [Axis]: Garyline, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[12],[20],[28]							11.29%
Spread	[12],[20],[22],[28]							6.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[28]				8,118
Investment, Identifier [Axis]: Garyline, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[12],[20]							11.34%
Spread	[12],[20],[22]							6.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				32,146
Investment, Identifier [Axis]: Garyline, LLC., Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14]	$ 500			$ 500
Investment, Identifier [Axis]: Garyline, LLC., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[14],[18],[19]	11.32%			11.32%
Spread	[14],[18],[19],[21]	7.00%			7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[18],[19]	$ 2,989			$ 2,989
Investment, Identifier [Axis]: Garyline, LLC., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[14],[19]	11.31%			11.31%
Spread	[14],[19],[21]	7.00%			7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 28,449			$ 28,449
Investment, Identifier [Axis]: GradeEight Corp., Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				1,365
Ending balance	[4],[14]	$ 1,070			$ 1,070
Investment, Identifier [Axis]: GradeEight Corp., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[14],[19]	13.75%			13.75%
Spread		6.25%	[14],[19],[21]		6.25%	[14],[19],[21]		7.25%	[12],[20],[22],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				$ (95)
Ending balance	[4],[14],[19]	$ 638			$ 638
Investment, Identifier [Axis]: GradeEight Corp., Secured Debt 2
Schedule of Investments [Line Items]
Spread		7.25%	[14],[19],[21],[24]		7.25%	[14],[19],[21],[24]		7.25%	[12],[20],[22],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				$ (48)
Ending balance	[4],[14],[19],[24]	$ (43)			$ (43)
Investment, Identifier [Axis]: GradeEight Corp., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.47%	[14],[19],[49]		11.47%	[14],[19],[49]		11.74%	[12],[20],[50]
Spread		7.25%	[14],[19],[21],[49]		7.25%	[14],[19],[21],[49]		7.25%	[12],[20],[22],[50]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[50]				$ 31,002
Ending balance	[4],[14],[19],[49]	$ 30,529			30,529
Investment, Identifier [Axis]: Gulf Manufacturing, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					72
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[34],[35]				888
Gross Additions					72
Gross Reductions					0
Ending balance	[4],[36],[37]	960			960
Investment, Identifier [Axis]: Gulf Manufacturing, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(130)		5,910
Amount of Interest, Fees or Dividends Credited to Income					354		1,092
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					14,730	[2],[13],[34],[35]	9,070
Gross Additions					0		5,910
Gross Reductions					130		0
Ending balance		$ 14,600	[4],[15],[36],[37]	$ 14,980	$ 14,600	[4],[15],[36],[37]	$ 14,980
Investment, Identifier [Axis]: Gulf Manufacturing, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.63%	[21],[24],[36],[37]	7.63%	7.63%	[21],[24],[36],[37]	7.63%	7.63%	[22],[25],[34],[35]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(42)		47
Amount of Interest, Fees or Dividends Credited to Income					18		111
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0		0
Gross Additions					5		0
Gross Reductions					42		0
Ending balance		$ (37)	[4],[24],[36],[37]	$ 0	$ (37)	[4],[24],[36],[37]	$ 0
Investment, Identifier [Axis]: Gulf Manufacturing, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%	[36],[37]	13.00%	12.00%	[36],[37]	13.00%	12.19%	[34],[35]
Spread		7.63%	[21],[36],[37]	7.63%	7.63%	[21],[36],[37]	7.63%	7.63%	[22],[34],[35]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(325)		373
Amount of Interest, Fees or Dividends Credited to Income					2,352		2,887
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					39,000	[2],[34],[35]	0
Gross Additions					46		40,000
Gross Reductions					1,325		0
Ending balance		$ 37,721	[4],[36],[37]	$ 40,000	$ 37,721	[4],[36],[37]	40,000
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.50%			12.50%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					467
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,518
Gross Additions					360
Gross Reductions					0
Ending balance		$ 1,878			1,878
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, ESecured Debt 1
Schedule of Investments [Line Items]
Spread	[20],[22],[23],[25]							9.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[20],[23],[25]				0
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		0	[4]	0	0	[4]	0
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		(2,460)
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2]	2,460
Gross Additions					0		0
Gross Reductions					0		2,460
Ending balance		$ 0	[4]	$ 0	$ 0	[4]	$ 0
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Spread		9.50%			9.50%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance		$ 0			$ 0
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		9.50%	[9],[19],[21],[24]	9.50%	9.50%	[9],[19],[21],[24]	9.50%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							0
Gross Additions							0
Gross Reductions							0
Ending balance		$ 0	[4],[9],[19],[24]	$ 0	$ 0	[4],[9],[19],[24]	$ 0
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%	[9]	12.50%	12.50%	[9]	12.50%	12.50%	[23]
PIK Rate				12.50%			12.50%	12.50%	[8],[23]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(336)
Amount of Interest, Fees or Dividends Credited to Income							76
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 1,518	[2],[23]	2,284
Gross Additions							0
Gross Reductions							336
Ending balance		$ 1,878	[4],[9]	$ 1,948	1,878	[4],[9]	1,948
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				0
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[12],[20]							8.75%
Spread	[12],[20],[22]							3.50%
PIK Rate	[8],[12],[20]							2.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				2,327
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[12],[23]							2.50%
PIK Rate	[8],[12],[23]							2.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[23]				418
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings., Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14]	$ 0			$ 0
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[14],[19]	13.56%			13.56%
Spread	[14],[19],[21]	9.00%			9.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 68			$ 68
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[14],[19]	9.01%			9.01%
Spread	[14],[19],[21]	3.50%			3.50%
PIK Rate	[7],[14],[19]	9.01%			9.01%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 2,399			$ 2,399
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[9],[14]	2.50%			2.50%
PIK Rate	[7],[9],[14]	2.50%			2.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[9],[14]	$ 18			$ 18
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread	[12],[20],[22],[25]							6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				(35)
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[12],[20]							10.86%
Spread	[12],[20],[22]							6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				6,666
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[12],[20]							10.86%
Spread	[12],[20],[22]							6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				4,713
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[12],[20]							10.86%
Spread	[12],[20],[22]							6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				16,453
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 5
Schedule of Investments [Line Items]
Total Rate	[12],[20]							10.86%
Spread	[12],[20],[22]							6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 8,039
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC., Secured Debt 1
Schedule of Investments [Line Items]
Spread	[14],[19],[21],[24]	6.50%			6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19],[24]	$ (28)			$ (28)
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[14],[19]	10.83%			10.83%
Spread	[14],[19],[21]	6.50%			6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 6,632			$ 6,632
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[14],[19]	10.83%			10.83%
Spread	[14],[19],[21]	6.50%			6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 4,690			$ 4,690
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC., Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[14],[19]	10.83%			10.83%
Spread	[14],[19],[21]	6.50%			6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 16,369			$ 16,369
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC., Secured Debt 5
Schedule of Investments [Line Items]
Total Rate	[14],[19]	10.83%			10.83%
Spread	[14],[19],[21]	6.50%			6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 7,999			$ 7,999
Investment, Identifier [Axis]: HOWLCO LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[5],[20],[34],[35]							11.28%
Spread	[5],[20],[22],[34],[35]							6.50%
PIK Rate	[5],[8],[20],[34],[35]							3.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5],[20],[34],[35]				$ 26,096
Investment, Identifier [Axis]: HOWLCO LLC., Secured Debt
Schedule of Investments [Line Items]
Total Rate	[6],[19],[36],[37]	10.94%			10.94%
Spread	[6],[19],[21],[36],[37]	6.50%			6.50%
PIK Rate	[6],[7],[19],[36],[37]	3.50%			3.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[6],[19],[36],[37]	$ 26,416			$ 26,416
Investment, Identifier [Axis]: HPEP 3, L.P., LP Interests (423 COR, L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							675
Amount of Interest, Fees or Dividends Credited to Income							88
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							1,869
Gross Additions							2,175
Gross Reductions							0
Ending balance				4,044			4,044
Investment, Identifier [Axis]: HPEP 3, L.P., LP Interests (HPEP 3, L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					194		247
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,472		4,225
Gross Additions					194		247
Gross Reductions					204		0
Ending balance		4,462		4,472	4,462		4,472
Investment, Identifier [Axis]: HPEP 3, L.P., LP Interests (HPEP 4, L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					425		329
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,861		3,773
Gross Additions					1,302		1,211
Gross Reductions					0		0
Ending balance		7,163		4,984	7,163		4,984
Investment, Identifier [Axis]: HPEP 423 COR, LP., LP Interests (423 COR, L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					981
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,187
Gross Additions					981
Gross Reductions					0
Ending balance		5,168			5,168
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (2717 GRE-LP, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[34],[38],[39]				441
Ending balance	[4],[36],[40],[41]	441			441
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (2717 HPP-MS, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[34],[38],[39]				383
Ending balance	[4],[36],[40],[41]	447			447
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (2717 MH, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[13],[34],[38],[39]				8,818
Ending balance	[4],[36],[40],[41]	1,686			1,686
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (423 AER II, LP)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[36],[40],[41]	1,526			1,526
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (423 COR, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[13],[34],[38],[39]				4,187
Ending balance	[4],[36],[40],[41]	5,168			5,168
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (423 HAR, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[34],[38],[39]				1,226
Ending balance	[4],[36],[40],[41]	1,226			1,226
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (HPEP 3, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[34],[38],[39]				4,472
Ending balance	[4],[36],[40],[41]	4,462			4,462
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (HPEP 4, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[34],[38],[39]				5,861
Ending balance	[4],[36],[40],[41]	7,163			7,163
Investment, Identifier [Axis]: Harrison Hydra-Gen, Ltd., Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					260		560
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					7,010	[2],[13]	4,660
Gross Additions					260		560
Gross Reductions					0		0
Ending balance		7,270	[4],[15]	5,220	7,270	[4],[15]	5,220
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					2,470		600
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					20,260	[2],[13]	17,460
Gross Additions					2,470		600
Gross Reductions					0		0
Ending balance		22,730	[4],[15]	18,060	22,730	[4],[15]	18,060
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					130		30
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,070	[2],[30]	920
Gross Additions					130		30
Gross Reductions					0		0
Ending balance		$ 1,200	[4],[29]	$ 950	$ 1,200	[4],[29]	$ 950
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.48%	[19]	11.48%	10.48%	[19]	11.48%	10.73%	[20]
Spread		6.00%	[19],[21]	6.00%	6.00%	[19],[21]	6.00%	6.00%	[20],[22]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					173		142
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,645	[2],[20]	1,974
Gross Additions					3,245		3,876
Gross Reductions					3,400		3,760
Ending balance		$ 2,490	[4],[19]	$ 2,090	$ 2,490	[4],[19]	$ 2,090
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%		12.50%	12.50%		12.50%	12.50%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(27)		(27)
Amount of Interest, Fees or Dividends Credited to Income					2,871		2,887
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					45,256	[2]	45,256
Gross Additions					27		27
Gross Reductions					27		27
Ending balance		$ 45,256	[4]	$ 45,256	45,256	[4]	45,256
Investment, Identifier [Axis]: Hornblower Sub, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[12],[20],[28]							9.92%
Spread	[12],[20],[22],[28]							5.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[28]				2,407
Investment, Identifier [Axis]: Hornblower Sub, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[12],[20]							10.11%
Spread	[12],[20],[22]							5.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 30,701
Investment, Identifier [Axis]: Hornblower Sub, LLC., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[14],[18],[19]	9.80%			9.80%
Spread	[14],[18],[19],[21]	5.50%			5.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[18],[19]	$ 4,838			$ 4,838
Investment, Identifier [Axis]: Hornblower Sub, LLC., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[14],[19],[49]	9.78%			9.78%
Spread	[14],[19],[21],[49]	5.50%			5.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19],[49]	$ 32,582			$ 32,582
Investment, Identifier [Axis]: Houston Plating and Coatings, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					420		(130)
Amount of Interest, Fees or Dividends Credited to Income					114		34
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					3,930	[2],[13]	3,340
Gross Additions					420		0
Gross Reductions					0		130
Ending balance		$ 4,350	[4],[15]	$ 3,210	$ 4,350	[4],[15]	$ 3,210
Investment, Identifier [Axis]: Houston Plating and Coatings, LLC, Unsecured Convertible Debt
Schedule of Investments [Line Items]
Total Rate		10.00%		8.00%	10.00%		8.00%	10.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					60		60
Amount of Interest, Fees or Dividends Credited to Income					151		121
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,940	[2]	2,880
Gross Additions					60		60
Gross Reductions					0		0
Ending balance		$ 3,000	[4]	$ 2,940	3,000	[4]	2,940
Investment, Identifier [Axis]: Hybrid Promotions, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[12],[20]							13.10%
Spread	[12],[20],[22]							8.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 7,200
Investment, Identifier [Axis]: Hybrid Promotions, LLC., Secured Debt
Schedule of Investments [Line Items]
Total Rate	[14],[19]	12.81%			12.81%
Spread	[14],[19],[21]	8.25%			8.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 7,200			$ 7,200
Investment, Identifier [Axis]: I-45 SLF LLC, Member Units (Fully diluted 20.0%; 21.75% profits interest)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							(7,107)
Amount of Unrealized Gain/(Loss)							6,710
Amount of Interest, Fees or Dividends Credited to Income							$ 429
Profits, percentage (as a percent)				21.75%			21.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							$ 13,490
Gross Additions							0
Gross Reductions							13,490
Ending balance				$ 0			0
Investment, Identifier [Axis]: IG Investor, LLC, Common Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					3,330		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					16,230	[2]	14,400
Gross Additions					3,330		0
Gross Reductions					0		0
Ending balance		$ 19,560	[4]	14,400	$ 19,560	[4]	14,400
Investment, Identifier [Axis]: IG Investor, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.00%			13.00%			13.00%
Amount of Realized Gain/(Loss)					$ 0		0
Amount of Unrealized Gain/(Loss)					24		0
Amount of Interest, Fees or Dividends Credited to Income					115		14
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,572	[2]	(35)
Gross Additions					28		4
Gross Reductions					0		0
Ending balance		$ 1,600	[4]	$ (31)	$ 1,600	[4]	$ (31)
Investment, Identifier [Axis]: IG Investor, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%		13.00%	13.00%		13.00%	13.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					209		0
Amount of Interest, Fees or Dividends Credited to Income					2,330		2,448
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					35,257	[2]	36,934
Gross Additions					247		42
Gross Reductions					440		880
Ending balance		$ 35,064	[4]	$ 36,096	$ 35,064	[4]	$ 36,096
Investment, Identifier [Axis]: IG Parent Corporation, Secured Debt 1
Schedule of Investments [Line Items]
Spread		5.75%	[6],[19],[21],[24]		5.75%	[6],[19],[21],[24]		5.75%	[5],[20],[22],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5],[20],[25]				$ 0
Ending balance	[4],[6],[19],[24]	$ 0			$ 0
Investment, Identifier [Axis]: IG Parent Corporation, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.18%	[6],[19]		10.18%	[6],[19]		10.21%	[5],[20]
Spread		5.75%	[6],[19],[21]		5.75%	[6],[19],[21]		5.75%	[5],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5],[20]				$ 10,154
Ending balance	[4],[6],[19]	$ 10,154			$ 10,154
Investment, Identifier [Axis]: IG Parent Corporation, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.18%	[6],[19]		10.18%	[6],[19]		10.21%	[5],[20]
Spread		5.75%	[6],[19],[21]		5.75%	[6],[19],[21]		5.75%	[5],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5],[20]				$ 4,903
Ending balance	[4],[6],[19]	$ 4,878			$ 4,878
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.46%	[19]	16.46%	12.46%	[19]	16.46%	13.78%	[20]
Spread		8.00%	[19],[21]	9.00%	8.00%	[19],[21]	9.00%	9.00%	[20],[22]
PIK Rate				2.00%			2.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(2)		0
Amount of Interest, Fees or Dividends Credited to Income					79		86
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,180	[2],[20]	816
Gross Additions					2		365
Gross Reductions					2		0
Ending balance		$ 1,180	[4],[19]	$ 1,181	$ 1,180	[4],[19]	$ 1,181
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 1a
Schedule of Investments [Line Items]
Spread		8.00%			8.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					(12)
Amount of Interest, Fees or Dividends Credited to Income					77
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					994
Gross Additions					0
Gross Reductions					994
Ending balance		$ 0			$ 0
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				16.46%			16.46%	13.78%	[20]
Spread		7.00%	[19],[21],[24]	9.00%	7.00%	[19],[21],[24]	9.00%	9.00%	[20],[22]
PIK Rate				2.00%			2.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							63
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 994	[2],[20]	697
Gross Additions							10
Gross Reductions							0
Ending balance		$ 0	[4],[19],[24]	$ 707	$ 0	[4],[19],[24]	$ 707
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 2a
Schedule of Investments [Line Items]
Spread		7.00%			7.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance		$ 0			$ 0
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.46%	[19]	15.46%	11.46%	[19]	15.46%	12.78%	[20]
Spread		7.00%	[19],[21]	8.00%	7.00%	[19],[21]	8.00%	8.00%	[20],[22]
PIK Rate				2.00%			2.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(133)		0
Amount of Interest, Fees or Dividends Credited to Income					403		476
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,438	[2],[20]	3,430
Gross Additions					630		177
Gross Reductions					133		0
Ending balance		$ 4,935	[4],[19]	$ 3,607	$ 4,935	[4],[19]	$ 3,607
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		13.46%	[19]	17.46%	13.46%	[19]	17.46%	14.78%	[20]
Spread		9.00%	[19],[21]	10.00%	9.00%	[19],[21]	10.00%	10.00%	[20],[22]
PIK Rate				2.00%			2.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(133)		0
Amount of Interest, Fees or Dividends Credited to Income					448		521
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,438	[2],[20]	3,430
Gross Additions					630		177
Gross Reductions					133		0
Ending balance		$ 4,935	[4],[19]	$ 3,607	$ 4,935	[4],[19]	3,607
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 5
Schedule of Investments [Line Items]
Total Rate	[19]	11.46%			11.46%
Spread	[19],[21]	7.00%			7.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					7
Amount of Interest, Fees or Dividends Credited to Income					11
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					1,770
Gross Reductions					0
Ending balance	[4],[19]	$ 1,770			1,770
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Warrants
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					4,150		569
Amount of Interest, Fees or Dividends Credited to Income					844		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,690	[2],[10]	2,091
Gross Additions					4,150		569
Gross Reductions					0		0
Ending balance		9,840	[4],[11],[15]	2,660	9,840	[4],[11],[15]	2,660
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C., Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				1,020
Ending balance	[4],[14]	$ 980			980
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[12],[20],[28]							11.39%
Spread	[12],[20],[22],[28]							7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[28]				1,581
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[12],[20]							11.62%
Spread	[12],[20],[22]							7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				20,559
Investment, Identifier [Axis]: Implus Footcare, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[12],[20]							13.73%
Spread	[12],[20],[22]							7.75%
PIK Rate	[8],[12],[20]							1.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 15,892
Investment, Identifier [Axis]: Implus Footcare, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[14],[19]	10.45%			10.45%
Spread	[14],[19],[21]	6.00%			6.00%
PIK Rate	[7],[14],[19]	4.00%			4.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 849			$ 849
Investment, Identifier [Axis]: Implus Footcare, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[9],[14],[19]	13.70%			13.70%
Spread	[9],[14],[19],[21]	7.75%			7.75%
PIK Rate	[7],[9],[14],[19]	1.50%			1.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[9],[14],[19]	$ 11,200			$ 11,200
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Common Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(630)		420
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					20,390	[2],[12]	17,690
Gross Additions					0		420
Gross Reductions					630		0
Ending balance		19,760	[4],[14]	18,110	19,760	[4],[14]	18,110
Investment, Identifier [Axis]: Infinity X1 Holdings, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							512
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					9,080	[2],[13]	4,000
Gross Additions							368
Gross Reductions							0
Ending balance		$ 8,550	[4],[15]	$ 4,368	$ 8,550	[4],[15]	$ 4,368
Investment, Identifier [Axis]: Infinity X1 Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%		13.00%	12.00%		13.00%	12.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							1,147
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 15,050	[2]	17,403
Gross Additions							33
Gross Reductions							2,050
Ending balance		$ 16,372	[4]	$ 15,386	16,372	[4]	15,386
Investment, Identifier [Axis]: Infinity X1 Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(96)
Amount of Interest, Fees or Dividends Credited to Income					683
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					15,050
Gross Additions					0
Gross Reductions					15,050
Ending balance		$ 0			$ 0
Investment, Identifier [Axis]: Infinity X1 Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%			12.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					14
Amount of Interest, Fees or Dividends Credited to Income					339
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					16,372
Gross Reductions					0
Ending balance		$ 16,372			16,372
Investment, Identifier [Axis]: Infinity XI Holdings, LLC Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(530)
Amount of Interest, Fees or Dividends Credited to Income					1,155
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					9,080
Gross Additions					0
Gross Reductions					530
Ending balance		8,550			8,550
Investment, Identifier [Axis]: Insight Borrower Corporation, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				320
Ending balance	[4],[14]	$ 320			$ 320
Investment, Identifier [Axis]: Insight Borrower Corporation, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.25%	[14],[19],[21],[24]		6.25%	[14],[19],[21],[24]		6.25%	[12],[20],[22],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				$ (54)
Ending balance	[4],[14],[19],[24]	$ (47)			$ (47)
Investment, Identifier [Axis]: Insight Borrower Corporation, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[14],[19]	10.52%			10.52%
Spread		6.25%	[14],[19],[21]		6.25%	[14],[19],[21]		6.25%	[12],[20],[22],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				$ (47)
Ending balance	[4],[14],[19]	$ 13,380			13,380
Investment, Identifier [Axis]: Insight Borrower Corporation, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[12],[20]							10.87%
Spread	[12],[20],[22]							6.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				13,539
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				27
Ending balance	[4],[14]	$ 38			$ 38
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		14.42%	[14],[19]		14.42%	[14],[19]		14.69%	[12],[20],[28]
Spread		10.00%	[14],[19],[21]		10.00%	[14],[19],[21]		10.00%	[12],[20],[22],[28]
PIK Rate		2.00%	[7],[14],[19]		2.00%	[7],[14],[19]		2.00%	[8],[12],[20],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[28]				$ 725
Ending balance	[4],[14],[19]	$ 792			$ 792
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.42%	[14],[19]		14.42%	[14],[19]		14.58%	[12],[20]
Spread		10.00%	[14],[19],[21]		10.00%	[14],[19],[21]		10.00%	[12],[20],[22]
PIK Rate		2.00%	[7],[14],[19]		2.00%	[7],[14],[19]		2.00%	[8],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 6,636
Ending balance	[4],[14],[19]	$ 6,802			$ 6,802
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		14.42%	[14],[19]		14.42%	[14],[19]		14.58%	[12],[20]
Spread		10.00%	[14],[19],[21]		10.00%	[14],[19],[21]		10.00%	[12],[20],[22]
PIK Rate		2.00%	[7],[14],[19]		2.00%	[7],[14],[19]		2.00%	[8],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 2,669
Ending balance	[4],[14],[19]	$ 2,736			$ 2,736
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[14],[19]	14.42%			14.42%
Spread	[14],[19],[21]	10.00%			10.00%
PIK Rate	[7],[14],[19]	2.00%			2.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 315			$ 315
Investment, Identifier [Axis]: Integral Energy Services, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					140		390
Amount of Interest, Fees or Dividends Credited to Income					0		21
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					550	[2],[12]	160
Gross Additions					140		390
Gross Reductions					0		0
Ending balance		$ 690	[4],[14]	$ 550	690	[4],[14]	$ 550
Investment, Identifier [Axis]: Integral Energy Services, Preferred Equity
Schedule of Investments [Line Items]
Total Rate				10.00%			10.00%	10.00%	[12],[13]
PIK Rate				10.00%			10.00%	10.00%	[8],[12],[13]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							125
Amount of Interest, Fees or Dividends Credited to Income							15
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 452	[2],[12],[13]	300
Gross Additions							140
Gross Reductions							0
Ending balance				$ 440			$ 440
Investment, Identifier [Axis]: Integral Energy Services, Preferred Equity 1
Schedule of Investments [Line Items]
Total Rate	[14],[15]	10.00%			10.00%
PIK Rate	[7],[14],[15]	10.00%			10.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					55
Amount of Interest, Fees or Dividends Credited to Income					13
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					452
Gross Additions					68
Gross Reductions					0
Ending balance	[4],[14],[15]	$ 520			$ 520
Investment, Identifier [Axis]: Integral Energy Services, Preferred Equity 2
Schedule of Investments [Line Items]
Total Rate	[14]	10.00%			10.00%
PIK Rate	[7],[14]	10.00%			10.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					76
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					190
Gross Reductions					0
Ending balance	[4],[14]	$ 190			$ 190
Investment, Identifier [Axis]: Integral Energy Services, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.06%	[14],[19]	13.06%	12.06%	[14],[19]	13.06%	12.35%	[12],[20]
Spread		7.50%	[14],[19],[21]	7.50%	7.50%	[14],[19],[21]	7.50%	7.50%	[12],[20],[22]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(187)		330
Amount of Interest, Fees or Dividends Credited to Income					839		955
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					12,728	[2],[12],[20]	13,891
Gross Additions					29		380
Gross Reductions					829		1,570
Ending balance		$ 11,928	[4],[14],[19]	$ 12,701	11,928	[4],[14],[19]	12,701
Investment, Identifier [Axis]: Interface Security Systems, L.L.C, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				0
Ending balance	[4],[14]	$ 0			$ 0
Investment, Identifier [Axis]: Interface Security Systems, L.L.C, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		14.43%	[14],[16],[18]		14.43%	[14],[16],[18]		14.54%	[12],[17],[28]
Spread		10.00%	[14],[16],[18],[21]		10.00%	[14],[16],[18],[21]		10.00%	[12],[17],[22],[28]
PIK Rate		14.43%	[7],[14],[16],[18]		14.43%	[7],[14],[16],[18]		14.54%	[8],[12],[17],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[17],[28]				$ 1,580
Ending balance	[4],[14],[16],[18]	$ 1,850			$ 1,850
Investment, Identifier [Axis]: Interface Security Systems, L.L.C, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.43%	[9],[14],[16],[19]		11.43%	[9],[14],[16],[19]		11.67%	[12],[17],[20],[23]
Spread		7.00%	[9],[14],[16],[19],[21]		7.00%	[9],[14],[16],[19],[21]		7.00%	[12],[17],[20],[22],[23]
PIK Rate		11.43%	[7],[9],[14],[16],[19]		11.43%	[7],[9],[14],[16],[19]		11.67%	[8],[12],[17],[20],[23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[17],[20],[23]				$ 13
Ending balance	[4],[9],[14],[16],[19]	$ 11			$ 11
Investment, Identifier [Axis]: Invincible Boat Company, LLC., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.98%	[14],[19]		11.98%	[14],[19]		12.01%	[12],[20],[28]
Spread		7.50%	[14],[19],[21]		7.50%	[14],[19],[21]		7.50%	[12],[20],[22],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[28]				$ 995
Ending balance	[4],[14],[19]	$ 963			$ 963
Investment, Identifier [Axis]: Invincible Boat Company, LLC., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.98%	[14],[19]		11.98%	[14],[19]		12.01%	[12],[20]
Spread		7.50%	[14],[19],[21]		7.50%	[14],[19],[21]		7.50%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 16,098
Ending balance	[4],[14],[19]	$ 15,347			15,347
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(150)
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,850
Gross Additions					0
Gross Reductions					150
Ending balance		$ 2,700			$ 2,700
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.00%			13.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					298
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,493
Gross Additions					4
Gross Reductions					0
Ending balance		$ 4,497			$ 4,497
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 5
Schedule of Investments [Line Items]
Total Rate		13.00%			13.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					667
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					9,638
Gross Additions					38
Gross Reductions					288
Ending balance		$ 9,388			9,388
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,850	[2]	2,680
Gross Additions							0
Gross Reductions							0
Ending balance		$ 2,700	[4]	2,680	$ 2,700	[4]	2,680
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Preferred Equity
Schedule of Investments [Line Items]
Total Rate		25.00%			25.00%			25.00%
PIK Rate		25.00%	[7]		25.00%	[7]		25.00%	[8]
Amount of Realized Gain/(Loss)					$ 0		0
Amount of Unrealized Gain/(Loss)					150		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					760	[2]	0
Gross Additions					150		711
Gross Reductions					0		0
Ending balance		$ 910	[4]	$ 711	$ 910	[4]	$ 711
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.00%		13.50%	13.00%		13.50%	13.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							311
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 4,493	[2]	4,487
Gross Additions							3
Gross Reductions							0
Ending balance		$ 4,497	[4]	$ 4,490	$ 4,497	[4]	$ 4,490
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%		13.50%	13.00%		13.50%	13.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					194		203
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,927	[2]	2,922
Gross Additions					2		2
Gross Reductions					0		0
Ending balance		$ 2,929	[4]	$ 2,924	$ 2,929	[4]	$ 2,924
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		13.00%		13.50%	13.00%		13.50%	13.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					585		610
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					8,944	[2]	8,944
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 8,944	[4]	$ 8,944	$ 8,944	[4]	$ 8,944
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		13.00%		13.50%	13.00%		13.50%	13.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					1,165		1,363
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					17,542	[2]	19,503
Gross Additions					14		26
Gross Reductions					0		2,000
Ending balance		$ 17,556	[4]	$ 17,529	$ 17,556	[4]	$ 17,529
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 5
Schedule of Investments [Line Items]
Total Rate		13.00%		13.50%	13.00%		13.50%	13.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							752
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 9,638	[2]	10,273
Gross Additions							45
Gross Reductions							400
Ending balance		$ 9,388	[4]	$ 9,918	9,388	[4]	9,918
Investment, Identifier [Axis]: Isagenix International, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5]				0
Ending balance	[4],[6]	$ 0			$ 0
Investment, Identifier [Axis]: Isagenix International, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		2.50%	[6],[19],[51]		2.50%	[6],[19],[51]		11.25%	[5],[20]
Spread	[5],[20],[22]							6.60%
PIK Rate	[5],[8],[20]							8.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5],[20]				$ 663
Ending balance	[4],[6],[19],[51]	$ 457			$ 457
Investment, Identifier [Axis]: Island Pump and Tank, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[14],[18],[19]	11.57%			11.57%
Spread		7.00%	[14],[18],[19],[21]		7.00%	[14],[18],[19],[21]		6.50%	[12],[20],[22],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				$ (5)
Ending balance	[4],[14],[18],[19]	$ 178			$ 178
Investment, Identifier [Axis]: Island Pump and Tank, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.56%	[14],[19]		10.56%	[14],[19]		10.35%	[12],[20]
Spread		6.00%	[14],[19],[21]		6.00%	[14],[19],[21]		5.50%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 1,722
Ending balance	[4],[14],[19]	$ 2,065			$ 2,065
Investment, Identifier [Axis]: Island Pump and Tank, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.56%	[14],[19]		11.56%	[14],[19]		11.35%	[12],[20]
Spread		7.00%	[14],[19],[21]		7.00%	[14],[19],[21]		6.50%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 1,722
Ending balance	[4],[14],[19]	$ 2,065			$ 2,065
Investment, Identifier [Axis]: Island Pump and Tank, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		12.56%	[14],[19]		12.56%	[14],[19]		12.35%	[12],[20]
Spread		8.00%	[14],[19],[21]		8.00%	[14],[19],[21]		7.50%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 1,722
Ending balance	[4],[14],[19]	$ 2,065			$ 2,065
Investment, Identifier [Axis]: JDC Power Services, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.25%	[14],[19],[21],[24]		6.25%	[14],[19],[21],[24]		6.50%	[12],[20],[22],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				$ (162)
Ending balance	[4],[14],[19],[24]	$ (144)			$ (144)
Investment, Identifier [Axis]: JDC Power Services, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.55%	[14],[19]		10.55%	[14],[19]		10.83%	[12],[20]
Spread		6.25%	[14],[19],[21]		6.25%	[14],[19],[21]		6.50%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 60,336
Ending balance	[4],[14],[19]	$ 60,193			60,193
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				300
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14]	$ 0			$ 0
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.80%	[9],[14],[18],[19]		10.80%	[9],[14],[18],[19]		12.72%	[12],[20],[28]
Spread		6.25%	[9],[14],[18],[19],[21]		6.25%	[9],[14],[18],[19],[21]		8.00%	[12],[20],[22],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[28]				$ 7,977
Ending balance	[4],[9],[14],[18],[19]	$ 6,360			$ 6,360
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.80%	[9],[14],[19]		10.80%	[9],[14],[19]		12.58%	[12],[20]
Spread		6.25%	[9],[14],[19],[21]		6.25%	[9],[14],[19],[21]		8.00%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 33,879
Ending balance	[4],[9],[14],[19]	$ 26,653			$ 26,653
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.80%	[9],[14],[19]		10.80%	[9],[14],[19]		12.58%	[12],[20]
Spread		6.25%	[9],[14],[19],[21]		6.25%	[9],[14],[19],[21]		8.00%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 3,176
Ending balance	[4],[9],[14],[19]	$ 2,496			2,496
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				870
Ending balance	[4],[14]	$ 780			$ 780
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.41%	[14],[19],[49]		11.41%	[14],[19],[49]		12.18%	[12],[20],[50]
Spread		7.00%	[14],[19],[21],[49]		7.00%	[14],[19],[21],[49]		7.50%	[12],[20],[22],[50]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[50]				$ 792
Ending balance	[4],[14],[19],[49]	$ 771			$ 771
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.38%	[14],[19],[49]		11.38%	[14],[19],[49]		12.19%	[12],[20],[50]
Spread		7.00%	[14],[19],[21],[49]		7.00%	[14],[19],[21],[49]		7.50%	[12],[20],[22],[50]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[50]				$ 627
Ending balance	[4],[14],[19],[49]	$ 625			$ 625
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.45%	[14],[19],[49]		11.45%	[14],[19],[49]		12.18%	[12],[20]
Spread		7.00%	[14],[19],[21],[49]		7.00%	[14],[19],[21],[49]		7.50%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 60
Ending balance	[4],[14],[19],[49]	$ 667			$ 667
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		11.38%	[14],[19]		11.38%	[14],[19]		12.18%	[12],[20]
Spread		7.00%	[14],[19],[21]		7.00%	[14],[19],[21]		7.50%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 1,843
Ending balance	[4],[14],[19]	$ 1,790			1,790
Investment, Identifier [Axis]: Jensen Jewelers of Idaho, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(280)		(90)
Amount of Interest, Fees or Dividends Credited to Income					544		769
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					11,820	[2],[13]	12,420
Gross Additions					0		0
Gross Reductions					280		90
Ending balance		$ 11,540	[4],[15]	$ 12,330	$ 11,540	[4],[15]	$ 12,330
Investment, Identifier [Axis]: Jensen Jewelers of Idaho, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.75%	[19],[21],[24]	6.75%	6.75%	[19],[21],[24]	6.75%	6.75%	[20],[22],[25]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2],[20],[25]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0	[4],[19],[24]	$ 0	$ 0	[4],[19],[24]	$ 0
Investment, Identifier [Axis]: Jensen Jewelers of Idaho, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.25%	[19]	15.00%	14.25%	[19]	15.00%	14.50%	[20]
Spread		6.75%	[19],[21]	6.75%	6.75%	[19],[21]	6.75%	6.75%	[20],[22]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					102		149
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,498	[2],[20]	1,998
Gross Additions					0		0
Gross Reductions					320		198
Ending balance		$ 1,178	[4],[19]	$ 1,800	1,178	[4],[19]	1,800
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[6]	$ 350			350
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Common Stock 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5]				0
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Common Stock 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5]				$ 140
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.13%	[6],[19]		13.13%	[6],[19]		21.59%	[5],[17],[20],[23]
Spread		8.75%	[6],[19],[21]		8.75%	[6],[19],[21]		16.00%	[5],[17],[20],[22],[23]
PIK Rate		6.00%	[6],[7],[19]		6.00%	[6],[7],[19]		21.59%	[5],[8],[17],[20],[23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5],[17],[20],[23]				$ 0
Ending balance	[4],[6],[19]	$ 1,824			$ 1,824
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.13%	[6],[19]		13.13%	[6],[19]		21.59%	[5],[17],[20],[23]
Spread		8.75%	[6],[19],[21]		8.75%	[6],[19],[21]		16.00%	[5],[17],[20],[22],[23]
PIK Rate		6.00%	[6],[7],[19]		6.00%	[6],[7],[19]		21.59%	[5],[8],[17],[20],[23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5],[17],[20],[23]				$ 0
Ending balance	[4],[6],[19]	$ 1,362			1,362
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[5],[20]							13.21%
Spread	[5],[20],[22]							8.75%
PIK Rate	[5],[8],[20]							6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5],[20]				1,770
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[5],[20]							13.18%
Spread	[5],[20],[22]							8.75%
PIK Rate	[5],[8],[20]							13.18%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5],[20]				1,314
Investment, Identifier [Axis]: Johnson Downie Opco, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					4,220		3,450
Amount of Interest, Fees or Dividends Credited to Income					1,397		469
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					14,550		9,620
Gross Additions					4,220		3,450
Gross Reductions					0		0
Ending balance		18,770		13,070	18,770		13,070
Investment, Identifier [Axis]: Johnson Downie Opco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(3)		(3)
Amount of Interest, Fees or Dividends Credited to Income					12		12
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0		0
Gross Additions					3		3
Gross Reductions					3		3
Ending balance		$ 0		$ 0	$ 0		$ 0
Investment, Identifier [Axis]: Johnson Downie Opco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.00%		15.00%	15.00%		15.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(25)		(29)
Amount of Interest, Fees or Dividends Credited to Income					1,645		1,829
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					21,507		24,207
Gross Additions					23		29
Gross Reductions					23		2,729
Ending balance		$ 21,507		$ 21,507	21,507		21,507
Investment, Identifier [Axis]: JorVet Holdings, LLC, (12), Secured Debt
Schedule of Investments [Line Items]
Total Rate								12.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2]				23,216
Investment, Identifier [Axis]: JorVet Holdings, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					300		0
Amount of Interest, Fees or Dividends Credited to Income					539		490
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					13,180	[2],[13]	10,741
Gross Additions					300		0
Gross Reductions					0		0
Ending balance		$ 13,480	[4],[15]	$ 10,741	$ 13,480	[4],[15]	$ 10,741
Investment, Identifier [Axis]: JorVet Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%	12.00%		12.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							1,584
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							25,483
Gross Additions							30
Gross Reductions							647
Ending balance		$ 23,240	[4]	$ 24,866	$ 23,240	[4]	24,866
Investment, Identifier [Axis]: JorVet Holdings, LLC,Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%			12.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					1,430
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					23,216
Gross Additions					24
Gross Reductions					0
Ending balance		$ 23,240			23,240
Investment, Identifier [Axis]: KBK Industries, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		2,050
Amount of Interest, Fees or Dividends Credited to Income					2,333		1,135
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					25,180	[2]	22,770
Gross Additions					0		2,050
Gross Reductions					0		0
Ending balance		$ 25,180	[4],[15]	$ 24,820	$ 25,180	[4],[15]	$ 24,820
Investment, Identifier [Axis]: KBK Industries, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		9.50%		9.00%	9.50%		9.00%	9.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(8)
Amount of Interest, Fees or Dividends Credited to Income							214
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 3,700	[2]	4,700
Gross Additions							8
Gross Reductions							408
Ending balance		$ 8,700	[4]	$ 4,300	8,700	[4]	4,300
Investment, Identifier [Axis]: KBK Industries, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(24)
Amount of Interest, Fees or Dividends Credited to Income					130
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					3,700
Gross Additions					0
Gross Reductions					3,700
Ending balance		$ 0			$ 0
Investment, Identifier [Axis]: KBK Industries, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		9.50%			9.50%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					51
Amount of Interest, Fees or Dividends Credited to Income					156
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					9,400
Gross Reductions					700
Ending balance		$ 8,700			8,700
Investment, Identifier [Axis]: KMS, LLC, Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14]	4,890			4,890
Investment, Identifier [Axis]: KMS, LLC, Preferred Equity 1.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					4,890
Gross Reductions					0
Ending balance		$ 4,890			$ 4,890
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.50%	[14]		12.50%	[14]		14.50%	[12],[20],[23]
Spread	[12],[20],[22],[23]							9.75%
PIK Rate	[7],[14]	12.50%			12.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[23]				$ 662
Ending balance	[4],[14]	$ 1,113			$ 1,113
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		14.50%			14.50%
Spread		9.75%			9.75%
Amount of Realized Gain/(Loss)					$ (415)
Amount of Unrealized Gain/(Loss)					339
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance		$ 0			$ 0
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%	[14]		12.50%	[14]		14.23%	[12],[20]
Spread	[12],[20],[22]							9.75%
PIK Rate		12.50%	[7],[14]		12.50%	[7],[14]		14.23%	[8],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 450
Ending balance	[4],[14]	$ 1,180			$ 1,180
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 2.1
Schedule of Investments [Line Items]
Total Rate		14.50%			14.50%
Spread		9.75%			9.75%
Amount of Realized Gain/(Loss)					$ (3,037)
Amount of Unrealized Gain/(Loss)					2,562
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance		$ 0			0
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[12],[20]							14.23%
Spread	[12],[20],[22]							9.75%
PIK Rate	[8],[12],[20]							14.23%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 440
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 3.1
Schedule of Investments [Line Items]
Spread		9.75%			9.75%
PIK Rate		14.23%			14.23%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance		$ 0			0
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[12],[20],[23]							14.50%
Spread	[12],[20],[22],[23]							9.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[23]				$ 4,779
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 4.1
Schedule of Investments [Line Items]
Spread		9.75%			9.75%
PIK Rate		14.23%			14.23%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance		$ 0			$ 0
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 5.1
Schedule of Investments [Line Items]
Total Rate		14.23%			14.23%
Spread		9.75%			9.75%
PIK Rate		14.23%			14.23%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance		$ 0			$ 0
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 6.1
Schedule of Investments [Line Items]
Total Rate		12.50%			12.50%
PIK Rate		12.50%			12.50%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					60
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					1,113
Gross Reductions					0
Ending balance		$ 1,113			$ 1,113
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 7.1
Schedule of Investments [Line Items]
Total Rate		12.50%			12.50%
PIK Rate		12.50%			12.50%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					56
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					1,180
Gross Reductions					0
Ending balance		$ 1,180			1,180
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		(240)
Amount of Interest, Fees or Dividends Credited to Income					59		65
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,710	[2],[13],[30]	2,730
Gross Additions					0		0
Gross Reductions					0		240
Ending balance		2,710	[4],[15],[29]	2,490	2,710	[4],[15],[29]	2,490
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					2,040		2,240
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					12,240	[2]	9,690
Gross Additions					2,040		2,240
Gross Reductions					0		0
Ending balance		$ 14,280	[4]	$ 11,930	$ 14,280	[4]	$ 11,930
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%	12.00%		12.00%	11.50%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					836		1,174
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					14,987	[2]	19,774
Gross Additions					4		8
Gross Reductions					1,600		2,400
Ending balance		$ 13,391	[4]	$ 17,382	$ 13,391	[4]	$ 17,382
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		9.00%		9.00%	9.00%		9.00%	9.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					178		174
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					3,926	[2]	3,805
Gross Additions					1		164
Gross Reductions					24		21
Ending balance		$ 3,903	[4]	$ 3,948	3,903	[4]	3,948
Investment, Identifier [Axis]: LKCM Headwater Investments I, L.P., LP Interests
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[34],[38],[39]				2,926
Ending balance	[4],[15],[36],[40],[41]	$ 692			$ 692
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.84%	[14],[19]		11.84%	[14],[19]		11.89%	[12],[20]
Spread		7.25%	[14],[19],[21]		7.25%	[14],[19],[21]		7.25%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 1,156
Ending balance	[4],[14],[19]	$ 1,156			$ 1,156
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.84%	[14],[19]		11.84%	[14],[19]		11.92%	[12],[20]
Spread		7.25%	[14],[19],[21]		7.25%	[14],[19],[21]		7.25%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 8,575
Ending balance	[4],[14],[19]	$ 8,527			$ 8,527
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.84%	[14],[19]		11.84%	[14],[19]		11.71%	[12],[20]
Spread		7.25%	[14],[19],[21]		7.25%	[14],[19],[21]		7.25%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 5,485
Ending balance	[4],[14],[19]	$ 5,457			$ 5,457
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		11.84%	[14],[19]		11.84%	[14],[19]		11.71%	[12],[20]
Spread		7.25%	[14],[19],[21]		7.25%	[14],[19],[21]		7.25%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 2,878
Ending balance	[4],[14],[19]	$ 2,864			$ 2,864
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 5
Schedule of Investments [Line Items]
Total Rate		11.84%	[14],[19]		11.84%	[14],[19]		11.92%	[12],[20]
Spread		7.25%	[14],[19],[21]		7.25%	[14],[19],[21]		7.25%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 1,118
Ending balance	[4],[14],[19]	$ 1,113			$ 1,113
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 6
Schedule of Investments [Line Items]
Total Rate		11.84%	[14],[19]		11.84%	[14],[19]		11.71%	[12],[20]
Spread		7.25%	[14],[19],[21]		7.25%	[14],[19],[21]		7.25%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 11,326
Ending balance	[4],[14],[19]	$ 11,271			$ 11,271
Investment, Identifier [Axis]: LLFlex, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.45%	[14],[19]		12.45%	[14],[19]		12.74%	[12],[20]
Spread		8.00%	[14],[19],[21]		8.00%	[14],[19],[21]		8.00%	[12],[20],[22]
PIK Rate		3.00%	[7],[14],[19]		3.00%	[7],[14],[19]		3.00%	[8],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 3,316
Ending balance	[4],[14],[19]	$ 3,160			3,160
Investment, Identifier [Axis]: Lightbox Holdings, L.P., Secured Debt
Schedule of Investments [Line Items]
Total Rate	[5]							9.44%
Spread	[5],[22]							5.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5]				15,059
Investment, Identifier [Axis]: Logix Acquisition Company, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[12],[17],[20]							12.25%
Spread	[12],[17],[20],[22]							4.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[17],[20]				$ 19,739
Investment, Identifier [Axis]: Logix Acquisition Company, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[14],[19]	10.07%			10.07%
Spread	[14],[19],[21]	5.75%			5.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 41,431			$ 41,431
Investment, Identifier [Axis]: Logix Acquisition Company, LLC, Secured Debt 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14]	2,016			2,016
Investment, Identifier [Axis]: Looking Glass Investments, LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[34],[39]				25
Ending balance	[4],[36],[41]	25			25
Investment, Identifier [Axis]: MH Corbin Holding LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							330
Gross Additions							0
Gross Reductions							0
Ending balance				330			330
Investment, Identifier [Axis]: MH Corbin Holding LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							0
Gross Additions							0
Gross Reductions							0
Ending balance				$ 0			$ 0
Investment, Identifier [Axis]: MH Corbin Holding LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate				14.00%			14.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							369
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							5,022
Gross Additions							0
Gross Reductions							160
Ending balance				$ 4,862			4,862
Investment, Identifier [Axis]: MS Private Loan Fund I, LP, LP Interests
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(508)		(58)
Amount of Interest, Fees or Dividends Credited to Income					878		1,089
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					14,034	[4],[13],[34],[38],[39]	14,527
Gross Additions					0		0
Gross Reductions					508		58
Ending balance		13,526		$ 14,469	13,526		$ 14,469
Investment, Identifier [Axis]: MS Private Loan Fund I, LP, LP Interests
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[15],[36],[40],[41]	$ 13,526			$ 13,526
Investment, Identifier [Axis]: MS Private Loan Fund I, LP, Secured Debt
Schedule of Investments [Line Items]
Total Rate		5.00%		5.00%	5.00%		5.00%	5.00%	[34],[39]
Spread		3.00%			3.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					200		32
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,600	[2],[34],[39]	0
Gross Additions					10,100		15,500
Gross Reductions					7,700		8,500
Ending balance		$ 4,000		$ 7,000	$ 4,000		7,000
Investment, Identifier [Axis]: MS Private Loan Fund I, LP, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[19],[36],[41]	7.38%			7.38%
Spread	[19],[21],[36],[41]	3.00%			3.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[19],[36],[41]	$ 4,000			$ 4,000
Investment, Identifier [Axis]: MS Private Loan Fund II, LP, LP Interests
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					490
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					7,843
Gross Additions					1,551
Gross Reductions					0
Ending balance		9,394			9,394
Investment, Identifier [Axis]: MS Private Loan Fund II, LP, LP Interests
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							85
Amount of Interest, Fees or Dividends Credited to Income							93
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					7,843	[4],[13],[34],[38],[39]	1,561
Gross Additions							2,249
Gross Reductions							0
Ending balance				$ 3,810			$ 3,810
Investment, Identifier [Axis]: MS Private Loan Fund II, LP, LP Interests
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[15],[36],[40],[41]	$ 9,394			$ 9,394
Investment, Identifier [Axis]: MS Private Loan Fund II, LP, Secured Debt
Schedule of Investments [Line Items]
Total Rate				8.88%			8.88%
Spread		3.00%		3.50%	3.00%		3.50%	3.00%	[20],[22],[25],[34],[39]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					37		1,446
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					(59)	[4],[20],[25],[34],[39]	23,367
Gross Additions					1,612		32,541
Gross Reductions					1,650		6,500
Ending balance		$ (97)		$ 49,408	$ (97)		49,408
Investment, Identifier [Axis]: MS Private Loan Fund II, LP, Secured Debt
Schedule of Investments [Line Items]
Spread	[19],[21],[24],[36],[41]	3.00%			3.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[19],[24],[36],[41]	$ (97)			$ (97)
Investment, Identifier [Axis]: MSC Adviser I, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					26,600		12,497
Amount of Interest, Fees or Dividends Credited to Income					5,342		6,312
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					246,000	[4],[13],[52]	174,063
Gross Additions					26,600		12,497
Gross Reductions					0		0
Ending balance		272,600	[4],[15],[53]	186,560	272,600	[4],[15],[53]	186,560
Investment, Identifier [Axis]: MSC Income Fund, Inc., Common Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					202		(131)
Amount of Interest, Fees or Dividends Credited to Income					991		868
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					16,810	[4],[13],[34],[39]	10,025
Gross Additions					4,747		5,000
Gross Reductions					0		131
Ending balance		21,557	[4],[15],[36],[41]	14,894	21,557	[4],[15],[36],[41]	14,894
Investment, Identifier [Axis]: MVI MSO, LLC (Milford Vascular), Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					2,700
Gross Reductions					0
Ending balance		$ 2,700			$ 2,700
Investment, Identifier [Axis]: MVI MSO, LLC (Milford Vascular), Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.00%			13.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					541
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					9,758
Gross Reductions					0
Ending balance		$ 9,758			9,758
Investment, Identifier [Axis]: MVI MSO, LLC, Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4]	$ 2,700			$ 2,700
Investment, Identifier [Axis]: MVI MSO, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.00%			13.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4]	$ 9,758			$ 9,758
Investment, Identifier [Axis]: Mako Steel, LP, Secured Debt 1
Schedule of Investments [Line Items]
Spread	[12],[20],[22],[25]							7.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				0
Investment, Identifier [Axis]: Mako Steel, LP, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[12],[20]							12.00%
Spread	[12],[20],[22]							7.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				18,973
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(90)		1,570
Amount of Interest, Fees or Dividends Credited to Income					748		434
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					6,850	[2]	1,500
Gross Additions					0		1,570
Gross Reductions					90		0
Ending balance		6,760		$ 3,070	6,760		$ 3,070
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[15]	$ 6,760			$ 6,760
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Preferred Equity
Schedule of Investments [Line Items]
Total Rate		8.00%	[15]	8.00%	8.00%	[15]	8.00%	8.00%	[13]
PIK Rate		8.00%	[7],[15]	8.00%	8.00%	[7],[15]	8.00%	8.00%	[8],[13]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(360)		236
Amount of Interest, Fees or Dividends Credited to Income					604		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					6,397	[2],[13]	6,035
Gross Additions					0		236
Gross Reductions					362		119
Ending balance		$ 6,035	[4],[15]	$ 6,152	6,035	[4],[15]	6,152
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					4		0
Amount of Interest, Fees or Dividends Credited to Income					12		5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					(11)	[2],[25]	0
Gross Additions					11		0
Gross Reductions					0		0
Ending balance		$ 0	[4],[24]	$ 0	$ 0	[4],[24]	$ 0
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		9.75%		10.75%	9.75%		10.75%	9.75%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					85		0
Amount of Interest, Fees or Dividends Credited to Income					977		1,370
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					20,844	[2]	23,623
Gross Additions					117		31
Gross Reductions					2,397		1,146
Ending balance		$ 18,564	[4]	$ 22,508	$ 18,564	[4]	22,508
Investment, Identifier [Axis]: Microbe Formulas, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		5.75%	[14],[19],[21],[24]		5.75%	[14],[19],[21],[24]		5.75%	[12],[20],[22],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				$ (39)
Ending balance	[4],[14],[19],[24]	$ (33)			$ (33)
Investment, Identifier [Axis]: Microbe Formulas, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.17%	[14],[19]		10.17%	[14],[19]		10.22%	[12],[20]
Spread		5.75%	[14],[19],[21]		5.75%	[14],[19],[21]		5.75%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 11,135
Ending balance	[4],[14],[19]	$ 11,079			$ 11,079
Investment, Identifier [Axis]: Microbe Formulas, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.18%	[14],[19]		10.18%	[14],[19]		10.21%	[12],[20]
Spread		5.75%	[14],[19],[21]		5.75%	[14],[19],[21]		5.75%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 19,828
Ending balance	[4],[14],[19]	$ 17,667			17,667
Investment, Identifier [Axis]: Mills Fleet Farm Group, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[30]				13,840
Investment, Identifier [Axis]: Mills Fleet Farm Group, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(1,516)
Amount of Interest, Fees or Dividends Credited to Income					556
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					13,840
Gross Additions					556
Gross Reductions					1,516
Ending balance	[4],[14],[15],[29]	$ 12,880			12,880
Investment, Identifier [Axis]: Mills Fleet Farm Group, LLC, Secured Debt
Schedule of Investments [Line Items]
Spread	[12],[20],[22],[25]							5.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				$ 0
Investment, Identifier [Axis]: Mills Fleet Farm Group, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[14],[19]	9.79%			9.79%
Spread	[14],[19],[21]	5.50%			5.50%
PIK Rate	[7],[14],[19]	9.79%			9.79%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 2,763			$ 2,763
Investment, Identifier [Axis]: Mills Fleet Farm Group, LLC, Secured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		9.79%			9.79%
Spread		5.50%			5.50%
PIK Rate		9.79%			9.79%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					114
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					2,763
Gross Reductions					0
Ending balance		$ 2,763			$ 2,763
Investment, Identifier [Axis]: Mills Fleet Farm Group, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Spread	[14],[19],[21],[24]	5.50%			5.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19],[24]	$ 0			$ 0
Investment, Identifier [Axis]: Mini Melts of America, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				430
Ending balance	[4],[14]	$ 330			$ 330
Investment, Identifier [Axis]: Mini Melts of America, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.54%	[14],[18],[19]		10.54%	[14],[18],[19]		10.74%	[12],[20],[28]
Spread		6.25%	[14],[18],[19],[21]		6.25%	[14],[18],[19],[21]		6.25%	[12],[20],[22],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[28]				$ 575
Ending balance	[4],[14],[18],[19]	$ 1,255			$ 1,255
Investment, Identifier [Axis]: Mini Melts of America, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.56%	[14],[19],[49]		10.56%	[14],[19],[49]		10.77%	[12],[20],[50]
Spread		6.25%	[14],[19],[21],[49]		6.25%	[14],[19],[21],[49]		6.25%	[12],[20],[22],[50]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[50]				$ 1,315
Ending balance	[4],[14],[19],[49]	$ 1,264			$ 1,264
Investment, Identifier [Axis]: Mini Melts of America, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		9.58%	[14],[19]		9.58%	[14],[19]		9.76%	[12],[20]
Spread		5.25%	[14],[19],[21]		5.25%	[14],[19],[21]		5.25%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 4,904
Ending balance	[4],[14],[19]	$ 4,679			$ 4,679
Investment, Identifier [Axis]: Mini Melts of America, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		11.58%	[14],[19]		11.58%	[14],[19]		11.76%	[12],[20]
Spread		7.25%	[14],[19],[21]		7.25%	[14],[19],[21]		7.25%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 4,904
Ending balance	[4],[14],[19]	$ 4,682			4,682
Investment, Identifier [Axis]: Mission Critical Group, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14]	$ 6,230			$ 6,230
Investment, Identifier [Axis]: Mission Critical Group, Secured Debt 1
Schedule of Investments [Line Items]
Spread	[14],[19],[21],[24]	6.00%			6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19],[24]	$ (218)			$ (218)
Investment, Identifier [Axis]: Mission Critical Group, Secured Debt 2
Schedule of Investments [Line Items]
Spread	[14],[19],[21],[24]	6.00%			6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19],[24]	$ (262)			$ (262)
Investment, Identifier [Axis]: Mission Critical Group, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[14],[19]	10.28%			10.28%
Spread	[14],[19],[21]	6.00%			6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 65,168			$ 65,168
Investment, Identifier [Axis]: Moffitt Holdings, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					14,300
Gross Reductions					0
Ending balance	[4]	$ 14,300			$ 14,300
Investment, Identifier [Axis]: Moffitt Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.00%			13.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					1,167
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					34,673
Gross Reductions					0
Ending balance	[4]	$ 34,673			$ 34,673
Investment, Identifier [Axis]: MoneyThumb Acquisition, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Total Rate		12.00%			12.00%			12.00%	[13]
PIK Rate		12.00%			12.00%			12.00%	[8],[13]
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					105
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[13]				1,707
Gross Additions					105
Gross Reductions					0
Ending balance		$ 1,812			$ 1,812
Investment, Identifier [Axis]: MoneyThumb Acquisition, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Total Rate	[15]	12.00%			12.00%
PIK Rate	[7],[15]	12.00%			12.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[15]	$ 1,812			$ 1,812
Investment, Identifier [Axis]: MoneyThumb Acquisition, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		14.00%			14.00%			14.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					756
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2]				8,967
Gross Additions					87
Gross Reductions					320
Ending balance		$ 8,734			$ 8,734
Investment, Identifier [Axis]: MoneyThumb Acquisition, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		14.00%			14.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4]	$ 8,734			$ 8,734
Investment, Identifier [Axis]: MoneyThumb Acquisition, LLC, Warrants
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[10]				594
Gross Additions					0
Gross Reductions					0
Ending balance	[4],[11]	594			594
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[34],[35]				796
Ending balance	[4],[14],[36],[37]	$ 602			$ 602
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.81%	[14],[19],[36],[37]		10.81%	[14],[19],[36],[37]		11.59%	[12],[20],[34],[35]
Spread		6.25%	[14],[19],[21],[36],[37]		6.25%	[14],[19],[21],[36],[37]		7.00%	[12],[20],[22],[34],[35]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[34],[35]				$ 3,907
Ending balance	[4],[14],[19],[36],[37]	$ 4,418			$ 4,418
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.81%	[14],[19],[36],[37]		10.81%	[14],[19],[36],[37]		11.59%	[12],[20],[34],[35]
Spread		6.25%	[14],[19],[21],[36],[37]		6.25%	[14],[19],[21],[36],[37]		7.00%	[12],[20],[22],[34],[35]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[34],[35]				$ 11,079
Ending balance	[4],[14],[19],[36],[37]	$ 12,464			$ 12,464
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.81%	[14],[19],[36],[37]		10.81%	[14],[19],[36],[37]		11.59%	[12],[20],[34],[35]
Spread		6.25%	[14],[19],[21],[36],[37]		6.25%	[14],[19],[21],[36],[37]		7.00%	[12],[20],[22],[34],[35]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[34],[35]				$ 18,103
Ending balance	[4],[14],[19],[36],[37]	$ 18,018			$ 18,018
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[14],[19],[36],[37]	10.81%			10.81%
Spread	[14],[19],[21],[36],[37]	6.25%			6.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19],[36],[37]	$ 1,211			$ 1,211
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Unsecured Debt 1
Schedule of Investments [Line Items]
Total Rate		8.00%	[14],[24],[36],[37]		8.00%	[14],[24],[36],[37]		8.00%	[12],[34],[35]
PIK Rate		8.00%	[7],[14],[24],[36],[37]		8.00%	[7],[14],[24],[36],[37]		8.00%	[8],[12],[34],[35]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[34],[35]				$ 114
Ending balance	[4],[14],[24],[36],[37]	$ 0			$ 0
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Unsecured Debt 2
Schedule of Investments [Line Items]
Total Rate		8.00%	[14],[36],[37]		8.00%	[14],[36],[37]		8.00%	[12],[34],[35]
PIK Rate		8.00%	[7],[14],[36],[37]		8.00%	[7],[14],[36],[37]		8.00%	[8],[12],[34],[35]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[34],[35]				$ 54
Ending balance	[4],[14],[36],[37]	$ 112			$ 112
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Unsecured Debt 3
Schedule of Investments [Line Items]
Total Rate		8.00%	[14],[36],[37]		8.00%	[14],[36],[37]		8.00%	[12],[34],[35]
PIK Rate		8.00%	[7],[14],[36],[37]		8.00%	[7],[14],[36],[37]		8.00%	[8],[12],[34],[35]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[34],[35]				$ 107
Ending balance	[4],[14],[36],[37]	$ 78			78
Investment, Identifier [Axis]: Mystic Logistics Holdings, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					410		(290)
Amount of Interest, Fees or Dividends Credited to Income					1,972		1,924
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					26,370	[4],[13]	26,390
Gross Additions					410		0
Gross Reductions					0		290
Ending balance		26,780	[4],[15]	26,100	26,780	[4],[15]	26,100
Investment, Identifier [Axis]: Mystic Logistics Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					2		2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[4],[25]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0	[4],[24]	$ 0	$ 0	[4],[24]	$ 0
Investment, Identifier [Axis]: Mystic Logistics Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.00%		10.00%	10.00%		10.00%	10.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(4)		18
Amount of Interest, Fees or Dividends Credited to Income					292		292
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,746	[4]	5,746
Gross Additions					4		0
Gross Reductions					4		0
Ending balance		$ 5,746	[4]	$ 5,746	5,746	[4]	5,746
Investment, Identifier [Axis]: NAPCO Precast, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					2,770		(1,350)
Amount of Interest, Fees or Dividends Credited to Income					275		63
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					9,050	[4]	11,730
Gross Additions					2,770		0
Gross Reductions					0		1,350
Ending balance		11,820	[4],[15]	10,380	11,820	[4],[15]	10,380
Investment, Identifier [Axis]: NRP Jones, LLC, Common Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					1,200
Gross Reductions					0
Ending balance	[4],[29]	1,200			1,200
Investment, Identifier [Axis]: NRP Jones, LLC, Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							(77)
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					94	[4]	1,466
Gross Additions							0
Gross Reductions							77
Ending balance		45	[4]	1,389	45	[4]	1,389
Investment, Identifier [Axis]: NRP Jones, LLC, Member Units 1.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(1,601)
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,696
Gross Additions					0
Gross Reductions					1,601
Ending balance		1,095			1,095
Investment, Identifier [Axis]: NRP Jones, LLC, Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							(3)
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,696	[4]	53
Gross Additions							0
Gross Reductions							3
Ending balance		1,095	[4]	$ 50	1,095	[4]	$ 50
Investment, Identifier [Axis]: NRP Jones, LLC, Member Units 2.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(49)
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					94
Gross Additions					0
Gross Reductions					49
Ending balance		45			45
Investment, Identifier [Axis]: NRP Jones, LLC, Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4]	1,238			1,238
Investment, Identifier [Axis]: NRP Jones, LLC, Preferred Equity 1.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					756
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					1,238
Gross Reductions					0
Ending balance		$ 1,238			$ 1,238
Investment, Identifier [Axis]: NRP Jones, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%	12.00%		12.00%	12.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							126
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 2,178	[4]	2,080
Gross Additions							0
Gross Reductions							0
Ending balance		$ 2,184	[4]	$ 2,080	$ 2,184	[4]	2,080
Investment, Identifier [Axis]: NRP Jones, LLC, Secured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		12.00%			12.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					137
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,178
Gross Additions					6
Gross Reductions					0
Ending balance		$ 2,184			2,184
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Preferred Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[13]				32,040
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					55,647		0
Amount of Unrealized Gain/(Loss)					(25,053)		4,390
Amount of Interest, Fees or Dividends Credited to Income					5,695		474
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					32,040		15,020
Gross Additions					55,647		4,390
Gross Reductions					87,687		0
Ending balance		$ 0		$ 19,410	0		$ 19,410
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				12.48%			12.48%
Spread				7.00%			7.00%	7.00%	[20],[22],[25]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							8
Amount of Interest, Fees or Dividends Credited to Income							19
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 0	[2],[20],[25]	0
Gross Additions							1,250
Gross Reductions							0
Ending balance				$ 1,250			1,250
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt 1.1
Schedule of Investments [Line Items]
Spread		7.00%			7.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					(7)
Amount of Interest, Fees or Dividends Credited to Income					10
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					7
Gross Reductions					7
Ending balance		$ 0			0
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate								12.50%
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							(121)
Amount of Interest, Fees or Dividends Credited to Income							1,205
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,650	[2]	25,794
Gross Additions							0
Gross Reductions							25,794
Ending balance				0			0
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt 2.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(115)
Amount of Interest, Fees or Dividends Credited to Income					3,143
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					62,200
Gross Additions					115
Gross Reductions					62,315
Ending balance		0			0
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate								12.50%
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							(43)
Amount of Interest, Fees or Dividends Credited to Income							454
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					62,200	[2]	10,500
Gross Additions							0
Gross Reductions							10,500
Ending balance				$ 0			$ 0
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt 3.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(171)
Amount of Interest, Fees or Dividends Credited to Income					193
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,650
Gross Additions					2,771
Gross Reductions					7,421
Ending balance		$ 0			$ 0
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate				12.50%			12.50%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							140
Amount of Interest, Fees or Dividends Credited to Income							1,425
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							0
Gross Additions							62,200
Gross Reductions							0
Ending balance				$ 62,200			62,200
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt 5
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							198
Amount of Interest, Fees or Dividends Credited to Income							108
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							0
Gross Additions							0
Gross Reductions							0
Ending balance				0			0
Investment, Identifier [Axis]: Nello Industries Investco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.50%			13.50%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					1,874
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					26,959
Gross Additions					27
Gross Reductions					0
Ending balance		$ 26,986			26,986
Investment, Identifier [Axis]: Nello Industries Investco, LLC, Common Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					15,560	[4],[13]	0
Gross Additions							12,120
Gross Reductions							0
Ending balance				$ 12,120			$ 12,120
Investment, Identifier [Axis]: Nello Industries Investco, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					2,680
Amount of Interest, Fees or Dividends Credited to Income					398
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					15,560
Gross Additions					2,680
Gross Reductions					0
Ending balance	[4],[15]	$ 18,240			$ 18,240
Investment, Identifier [Axis]: Nello Industries Investco, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.50%			13.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4]	$ 26,986			$ 26,986
Investment, Identifier [Axis]: Nello Industries Investco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				11.88%			11.88%
Spread		6.50%		6.50%	6.50%		6.50%	6.50%	[20],[22],[25]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					16		118
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					(16)	[4],[20],[25]	0
Gross Additions					16		10,946
Gross Reductions					0		0
Ending balance		$ 0		$ 10,946	0		$ 10,946
Investment, Identifier [Axis]: Nello Industries Investco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				13.50%			13.50%	13.50%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							751
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					26,959	[4]	0
Gross Additions							24,556
Gross Reductions							0
Ending balance				$ 24,556			24,556
Investment, Identifier [Axis]: NexRev LLC, Secured Debt 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(9)
Amount of Interest, Fees or Dividends Credited to Income					151
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					9,811
Gross Additions					9
Gross Reductions					9,820
Ending balance		0			0
Investment, Identifier [Axis]: NexRev LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[4],[13]				11,910
Investment, Identifier [Axis]: NexRev LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					480		1,860
Amount of Interest, Fees or Dividends Credited to Income					433		471
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					11,910		6,350
Gross Additions					480		1,860
Gross Reductions					0		0
Ending balance		12,390	[4],[15]	$ 8,210	12,390	[4],[15]	$ 8,210
Investment, Identifier [Axis]: NexRev LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				10.00%			10.00%
Amount of Realized Gain/(Loss)					0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		42
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[4],[25]	0
Gross Additions					0		1,600
Gross Reductions					0		0
Ending balance		$ 0		$ 1,600	0		$ 1,600
Investment, Identifier [Axis]: NexRev LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				10.00%			10.00%	9.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							34
Amount of Interest, Fees or Dividends Credited to Income							522
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					9,811	[4]	9,751
Gross Additions							60
Gross Reductions							0
Ending balance				$ 9,811			9,811
Investment, Identifier [Axis]: NinjaTrader, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread	[12],[20],[22],[25]							6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				(6)
Investment, Identifier [Axis]: NinjaTrader, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[12],[20]							11.24%
Spread	[12],[20],[22]							6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 28,243
Investment, Identifier [Axis]: Northwind Midstream Partners LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[14],[19]	10.70%			10.70%
Spread	[14],[19],[21]	6.25%			6.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 7,425			$ 7,425
Investment, Identifier [Axis]: NuStep, LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							960
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					6,000	[2]	9,240
Gross Additions							960
Gross Reductions							0
Ending balance		6,000	[4]	10,200	6,000	[4]	10,200
Investment, Identifier [Axis]: NuStep, LLC, Preferred Member Units 1.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					650
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					11,550
Gross Additions					650
Gross Reductions					0
Ending balance		12,200			12,200
Investment, Identifier [Axis]: NuStep, LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					11,550	[2]	5,150
Gross Additions							0
Gross Reductions							0
Ending balance		12,200	[4]	$ 5,150	12,200	[4]	$ 5,150
Investment, Identifier [Axis]: NuStep, LLC, Preferred Member Units 2.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					6,000
Gross Additions					0
Gross Reductions					0
Ending balance		$ 6,000			$ 6,000
Investment, Identifier [Axis]: NuStep, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.98%	[16],[19]	11.98%	10.98%	[16],[19]	11.98%	11.16%	[20]
Spread		6.50%	[16],[19],[21]	6.50%	6.50%	[16],[19],[21]	6.50%	6.50%	[20],[22]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					201		221
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					3,600	[4],[20]	3,600
Gross Additions					0		0
Gross Reductions					1,200		0
Ending balance		$ 2,400	[4],[16],[19]	$ 3,600	$ 2,400	[4],[16],[19]	$ 3,600
Investment, Identifier [Axis]: NuStep, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%	[16]	12.00%	12.00%	[16]	12.00%	12.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					1,114		1,125
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					18,439		18,426
Gross Additions					1		6
Gross Reductions					0		0
Ending balance		$ 18,440	[4],[16]	$ 18,432	18,440	[4],[16]	18,432
Investment, Identifier [Axis]: OMi Topco, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					4,900		11,900
Amount of Interest, Fees or Dividends Credited to Income					14,093		2,475
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					72,720	[2],[13]	36,380
Gross Additions					4,900		11,900
Gross Reductions					0		0
Ending balance		$ 77,620	[4],[15]	$ 48,280	$ 77,620	[4],[15]	$ 48,280
Investment, Identifier [Axis]: OMi Topco, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%	12.00%		12.00%	12.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(16)
Amount of Interest, Fees or Dividends Credited to Income							766
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 9,000	[2]	12,750
Gross Additions							16
Gross Reductions							766
Ending balance		$ 19,000	[4]	$ 12,000	19,000	[4]	12,000
Investment, Identifier [Axis]: OMi Topco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(30)
Amount of Interest, Fees or Dividends Credited to Income					207
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					9,000
Gross Additions					0
Gross Reductions					9,000
Ending balance		0			0
Investment, Identifier [Axis]: OMi Topco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					434
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance		$ 0			$ 0
Investment, Identifier [Axis]: OMi Topco, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.00%			12.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					44
Amount of Interest, Fees or Dividends Credited to Income					146
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					19,000
Gross Reductions					0
Ending balance		$ 19,000			$ 19,000
Investment, Identifier [Axis]: Obra Capital, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.25%	[14],[19],[21],[24]		7.25%	[14],[19],[21],[24]		7.50%	[12],[20],[22],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				$ (4)
Ending balance	[4],[14],[19],[24]	$ (3)			$ (3)
Investment, Identifier [Axis]: Obra Capital, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.68%	[14],[19]		11.68%	[14],[19]		11.97%	[12],[20]
Spread		7.25%	[14],[19],[21]		7.25%	[14],[19],[21]		7.50%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 25,884
Ending balance	[4],[14],[19]	$ 26,221			$ 26,221
Investment, Identifier [Axis]: Obra Capital, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[14],[19]	11.68%			11.68%
Spread	[14],[19],[21]	7.25%			7.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 3,171			$ 3,171
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0	[4]	$ 0	$ 0	[4]	$ 0
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Preferred Stock
Schedule of Investments [Line Items]
Total Rate		7.00%		7.00%	7.00%		7.00%	7.00%
PIK Rate		7.00%	[7]	7.00%	7.00%	[7]	7.00%	7.00%	[8]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0	[4]	$ 0	$ 0	[4]	$ 0
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.00%	[9]	12.00%	12.00%	[9]	12.00%	12.00%	[23]
PIK Rate		12.00%	[7],[9]	12.00%	12.00%	[7],[9]	12.00%	12.00%	[8],[23]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(110)
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 457	[2],[23]	326
Gross Additions							0
Gross Reductions							111
Ending balance		$ 455	[4],[9]	$ 215	$ 455	[4],[9]	$ 215
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		12.00%			12.00%
PIK Rate		12.00%			12.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					99
Gross Additions					0
Gross Reductions					0
Ending balance		$ 99			$ 99
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%	[9]	12.00%	12.00%	[9]	12.00%	12.00%	[23]
PIK Rate		12.00%	[7],[9]	12.00%	12.00%	[7],[9]	12.00%	12.00%	[8],[23]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(113)
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 218	[2],[23]	332
Gross Additions							0
Gross Reductions							112
Ending balance		$ 218	[4],[9]	$ 220	$ 218	[4],[9]	$ 220
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 2.1
Schedule of Investments [Line Items]
Total Rate		12.00%			12.00%
PIK Rate		12.00%			12.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					101
Gross Additions					0
Gross Reductions					0
Ending balance		$ 101			$ 101
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.00%	[9]	12.00%	12.00%	[9]	12.00%	12.00%	[23]
PIK Rate		12.00%	[7],[9]	12.00%	12.00%	[7],[9]	12.00%	12.00%	[8],[23]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(243)
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 101	[2],[23]	716
Gross Additions							0
Gross Reductions							243
Ending balance		$ 101	[4],[9]	$ 473	$ 101	[4],[9]	$ 473
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 3.1
Schedule of Investments [Line Items]
Total Rate		12.00%			12.00%
PIK Rate		12.00%			12.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					218
Gross Additions					0
Gross Reductions					0
Ending balance		$ 218			$ 218
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		12.00%	[9]	12.00%	12.00%	[9]	12.00%	12.00%	[23]
PIK Rate		12.00%	[7],[9]	12.00%	12.00%	[7],[9]	12.00%	12.00%	[8],[23]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(506)
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 99	[2],[23]	1,493
Gross Additions							0
Gross Reductions							506
Ending balance		$ 99	[4],[9]	$ 987	$ 99	[4],[9]	$ 987
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 4.1
Schedule of Investments [Line Items]
Total Rate		12.00%			12.00%
PIK Rate		12.00%			12.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					457
Gross Additions					1
Gross Reductions					2
Ending balance		$ 456			$ 456
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Unsecured Debt
Schedule of Investments [Line Items]
Total Rate		10.00%	[9]	10.00%	10.00%	[9]	10.00%	10.00%	[23]
PIK Rate		10.00%	[7],[9]	10.00%	10.00%	[7],[9]	10.00%	10.00%	[8],[23]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 305	[2],[23]	305
Gross Additions							0
Gross Reductions							0
Ending balance		$ 305	[4],[9]	$ 305	$ 305	[4],[9]	305
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Unsecured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		10.00%			10.00%
PIK Rate		10.00%			10.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					305
Gross Additions					0
Gross Reductions					0
Ending balance		$ 305			305
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Warrants
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2],[10]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0	[4],[11]	0	$ 0	[4],[11]	0
Investment, Identifier [Axis]: OnPoint Industrial Services, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.30%	[14],[19]		10.30%	[14],[19]		11.35%	[12],[20]
Spread		6.00%	[14],[19],[21]		6.00%	[14],[19],[21]		7.00%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 1,386
Ending balance	[4],[14],[19]	$ 1,393			$ 1,393
Investment, Identifier [Axis]: OnPoint Industrial Services, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.30%	[14],[19]		10.30%	[14],[19]		11.33%	[12],[20]
Spread		6.00%	[14],[19],[21]		6.00%	[14],[19],[21]		7.00%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 3,850
Ending balance	[4],[14],[19]	$ 3,871			3,871
Investment, Identifier [Axis]: Oneliance, LLC, Preferred Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					510		522
Amount of Interest, Fees or Dividends Credited to Income					52		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,580	[2],[13]	1,128
Gross Additions					510		522
Gross Reductions					0		0
Ending balance		$ 3,090	[4],[15]	$ 1,650	3,090	[4],[15]	$ 1,650
Investment, Identifier [Axis]: Oneliance, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread				10.00%			10.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							0
Gross Additions							0
Gross Reductions							0
Ending balance				$ 0			$ 0
Investment, Identifier [Axis]: Oneliance, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				15.48%			15.48%
Spread				10.00%			10.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							83
Amount of Interest, Fees or Dividends Credited to Income							438
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							5,350
Gross Additions							90
Gross Reductions							240
Ending balance				$ 5,200			5,200
Investment, Identifier [Axis]: Orttech Holdings, LLC, Debt 2
Schedule of Investments [Line Items]
Total Rate	[20]							15.66%
Spread	[20],[22]							11.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[20]				$ 21,960
Investment, Identifier [Axis]: Orttech Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.48%			15.48%
Spread		11.00%			11.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					(24)
Amount of Interest, Fees or Dividends Credited to Income					1,700
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					21,960
Gross Additions					24
Gross Reductions					824
Ending balance		$ 21,160			21,160
Investment, Identifier [Axis]: Orttech Holdings, LLC, Preferred Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		(1,990)
Amount of Interest, Fees or Dividends Credited to Income					120		264
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					13,450	[2],[13],[30]	17,050
Gross Additions					0		0
Gross Reductions					0		1,990
Ending balance		$ 13,450	[4],[29]	$ 15,060	$ 13,450	[4],[29]	$ 15,060
Investment, Identifier [Axis]: Orttech Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		11.00%	[19],[21],[24]	11.00%	11.00%	[19],[21],[24]	11.00%	11.00%	[20],[22],[25]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2],[20],[25]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0	[4],[19],[24]	$ 0	$ 0	[4],[19],[24]	$ 0
Investment, Identifier [Axis]: Orttech Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.48%	[19]	16.48%	15.48%	[19]	16.48%
Spread		11.00%	[19],[21]	11.00%	11.00%	[19],[21]	11.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(23)
Amount of Interest, Fees or Dividends Credited to Income							1,852
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							22,040
Gross Additions							23
Gross Reductions							103
Ending balance		$ 21,160	[4],[19]	$ 21,960	$ 21,160	[4],[19]	21,960
Investment, Identifier [Axis]: Ospemifene Royalty Sub LLC, Secured Debt
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[23]				12
Ending balance	[4],[9],[14]	$ 44			$ 44
Investment, Identifier [Axis]: PPL RVs, Inc. Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.48%			11.48%
Spread		7.00%			7.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					(26)
Amount of Interest, Fees or Dividends Credited to Income					946
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					16,456
Gross Additions					26
Gross Reductions					1,154
Ending balance		$ 15,328			15,328
Investment, Identifier [Axis]: PPL RVs, Inc., Common Stock 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					1,140		(1,110)
Amount of Interest, Fees or Dividends Credited to Income					261		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					17,110	[2]	16,980
Gross Additions					1,140		0
Gross Reductions					0		1,110
Ending balance		18,250	[4],[15]	15,870	18,250	[4],[15]	15,870
Investment, Identifier [Axis]: PPL RVs, Inc., Common Stock 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					61		146
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					514	[2],[13],[30]	368
Gross Additions					61		146
Gross Reductions					0		0
Ending balance		$ 575	[4],[15],[29]	$ 514	$ 575	[4],[15],[29]	$ 514
Investment, Identifier [Axis]: PPL RVs, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.00%	[19],[21],[24]	8.75%	7.00%	[19],[21],[24]	8.75%	8.75%	[20],[22],[25]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(1)		(1)
Amount of Interest, Fees or Dividends Credited to Income					1		1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2],[20],[25]	0
Gross Additions					1		1
Gross Reductions					1		1
Ending balance		$ 0	[4],[19],[24]	$ 0	$ 0	[4],[19],[24]	$ 0
Investment, Identifier [Axis]: PPL RVs, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.48%	[19]	14.23%	11.48%	[19]	14.23%	13.73%	[20]
Spread		7.00%	[19],[21]	8.75%	7.00%	[19],[21]	8.75%	8.75%	[20],[22]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(30)
Amount of Interest, Fees or Dividends Credited to Income							1,438
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 16,456	[2],[20]	19,877
Gross Additions							30
Gross Reductions							886
Ending balance		$ 15,328	[4],[19]	$ 19,021	$ 15,328	[4],[19]	19,021
Investment, Identifier [Axis]: PTL US Bidco, Inc, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.78%	[14],[18],[19],[36],[37]		12.78%	[14],[18],[19],[36],[37]		13.03%	[12],[20],[34],[35]
Spread		8.25%	[14],[18],[19],[21],[36],[37]		8.25%	[14],[18],[19],[21],[36],[37]		8.25%	[12],[20],[22],[34],[35]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[34],[35]				$ 6,769
Ending balance	[4],[14],[18],[19],[36],[37]	$ 6,786			$ 6,786
Investment, Identifier [Axis]: PTL US Bidco, Inc, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.84%	[14],[19],[36],[37]		12.84%	[14],[19],[36],[37]		13.03%	[12],[20],[34],[35]
Spread		8.25%	[14],[19],[21],[36],[37]		8.25%	[14],[19],[21],[36],[37]		8.25%	[12],[20],[22],[34],[35]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[34],[35]				$ 17,631
Ending balance	[4],[14],[19],[36],[37]	$ 16,255			16,255
Investment, Identifier [Axis]: Peaches Holding Corporation, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2]				4,540
Ending balance	[4]	0			0
Investment, Identifier [Axis]: Pearl Meyer Topco LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							9,250
Amount of Interest, Fees or Dividends Credited to Income							5,885
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							44,090
Gross Additions							9,250
Gross Reductions							0
Ending balance				$ 53,340			$ 53,340
Investment, Identifier [Axis]: Pearl Meyer Topco LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				12.00%			12.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							279
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							3,500
Gross Additions							1,500
Gross Reductions							0
Ending balance				$ 5,000			$ 5,000
Investment, Identifier [Axis]: Pearl Meyer Topco LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				12.00%			12.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							110
Amount of Interest, Fees or Dividends Credited to Income							1,724
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							20,000
Gross Additions							18,219
Gross Reductions							0
Ending balance				$ 38,219			$ 38,219
Investment, Identifier [Axis]: Pearl Meyer Topco LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate				12.00%			12.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(13)
Amount of Interest, Fees or Dividends Credited to Income							1,692
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							27,681
Gross Additions							13
Gross Reductions							13
Ending balance				$ 27,681			27,681
Investment, Identifier [Axis]: Pinnacle TopCo, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					1,170		2,790
Amount of Interest, Fees or Dividends Credited to Income					1,019		853
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					18,360	[2],[13]	12,540
Gross Additions					1,170		2,790
Gross Reductions					0		0
Ending balance		19,530	[4],[15]	15,330	19,530	[4],[15]	15,330
Investment, Identifier [Axis]: Pinnacle TopCo, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(2)		0
Amount of Interest, Fees or Dividends Credited to Income					6		12
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0		444
Gross Additions					2		2
Gross Reductions					2		460
Ending balance		$ 0	[4],[24]	$ (14)	$ 0	[4],[24]	$ (14)
Investment, Identifier [Axis]: Pinnacle TopCo, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%		13.00%	13.00%		13.00%	13.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(34)		0
Amount of Interest, Fees or Dividends Credited to Income					1,888		2,044
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					28,640	[2]	30,339
Gross Additions					34		30
Gross Reductions					834		0
Ending balance		$ 27,840	[4]	$ 30,369	27,840	[4]	30,369
Investment, Identifier [Axis]: Pinnacle TopCo, LLC, ecured Debt 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[25]				0
Investment, Identifier [Axis]: Power System Solutions, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				3,800
Investment, Identifier [Axis]: Power System Solutions, Secured Debt 1
Schedule of Investments [Line Items]
Spread	[12],[20],[22],[25]							6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				(63)
Investment, Identifier [Axis]: Power System Solutions, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[12],[20]							10.86%
Spread	[12],[20],[22]							6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				6,124
Investment, Identifier [Axis]: Power System Solutions, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[12],[20]							10.90%
Spread	[12],[20],[22]							6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 18,233
Investment, Identifier [Axis]: PrimeFlight Aviation Services, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		9.78%	[14],[19],[36]		9.78%	[14],[19],[36]		10.58%	[12],[20]
Spread		5.50%	[14],[19],[21],[36]		5.50%	[14],[19],[21],[36]		5.50%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 7,880
Ending balance	[4],[14],[19],[36]	$ 7,840			$ 7,840
Investment, Identifier [Axis]: PrimeFlight Aviation Services, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		9.80%	[14],[19],[36]		9.80%	[14],[19],[36]		9.83%	[12],[20]
Spread		5.50%	[14],[19],[21],[36]		5.50%	[14],[19],[21],[36]		5.50%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 752
Ending balance	[4],[14],[19],[36]	$ 749			$ 749
Investment, Identifier [Axis]: PrimeFlight Aviation Services, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		9.80%	[14],[19],[36]		9.80%	[14],[19],[36]		9.83%	[12],[20]
Spread		5.50%	[14],[19],[21],[36]		5.50%	[14],[19],[21],[36]		5.50%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 756
Ending balance	[4],[14],[19],[36]	$ 752			$ 752
Investment, Identifier [Axis]: PrimeFlight Aviation Services, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		9.55%	[14],[19],[36]		9.55%	[14],[19],[36]		9.58%	[12],[20]
Spread		5.25%	[14],[19],[21],[36]		5.25%	[14],[19],[21],[36]		5.25%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 859
Ending balance	[4],[14],[19],[36]	$ 855			$ 855
Investment, Identifier [Axis]: PrimeFlight Aviation Services, Secured Debt 5
Schedule of Investments [Line Items]
Total Rate	[14],[19],[36]	9.52%			9.52%
Spread	[14],[19],[21],[36]	5.25%			5.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19],[36]	$ 1,895			$ 1,895
Investment, Identifier [Axis]: Principle Environmental, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate								13.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2]				4,861
Investment, Identifier [Axis]: Principle Environmental, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					60		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					600	[2]	510
Gross Additions					60		0
Gross Reductions					0		0
Ending balance		660	[4]	510	660	[4]	510
Investment, Identifier [Axis]: Principle Environmental, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					1,190		50
Amount of Interest, Fees or Dividends Credited to Income					654		491
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					12,600	[2],[13]	10,750
Gross Additions					1,190		50
Gross Reductions					0		0
Ending balance		$ 13,790	[4],[15]	$ 10,800	$ 13,790	[4],[15]	$ 10,800
Investment, Identifier [Axis]: Principle Environmental, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.00%		13.00%	13.00%		13.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					330		399
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,861		5,829
Gross Additions					9		12
Gross Reductions					0		0
Ending balance		$ 4,870	[4]	$ 5,841	4,870	[4]	5,841
Investment, Identifier [Axis]: Purge Rite, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				2,060
Ending balance	[4],[14]	6,490			6,490
Investment, Identifier [Axis]: Purge Rite, LLC, Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				3,248
Ending balance	[4],[14]	3,248			3,248
Investment, Identifier [Axis]: Quality Lease Service, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					460	[2]	460
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		460	[4]	460	460	[4]	460
Investment, Identifier [Axis]: Quality Lease Service, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							(2,505)
Amount of Unrealized Gain/(Loss)							2,500
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							0
Gross Additions							2,500
Gross Reductions							2,500
Ending balance				0			0
Investment, Identifier [Axis]: RA Outdoors (Aspira) LLC, Common Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance		$ 0			$ 0
Investment, Identifier [Axis]: RA Outdoors (Aspira) LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.25%			11.25%
Spread		6.75%			6.75%
PIK Rate		11.25%			11.25%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					(148)
Amount of Interest, Fees or Dividends Credited to Income					80
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,257
Gross Additions					42
Gross Reductions					150
Ending balance		$ 1,149			$ 1,149
Investment, Identifier [Axis]: RA Outdoors (Aspira) LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.25%			11.25%
Spread		6.75%			6.75%
PIK Rate		11.25%			11.25%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					(1,553)
Amount of Interest, Fees or Dividends Credited to Income					824
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					13,155
Gross Additions					425
Gross Reductions					1,569
Ending balance		$ 12,011			12,011
Investment, Identifier [Axis]: RA Outdoors LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[34]				0
Ending balance	[4],[14]	$ 0			$ 0
Investment, Identifier [Axis]: RA Outdoors LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.25%	[14],[19]		11.25%	[14],[19]		11.74%	[12],[20],[34]
Spread		6.75%	[14],[19],[21]		6.75%	[14],[19],[21]		6.75%	[12],[20],[22],[34]
PIK Rate	[8],[12],[20],[34]							11.74%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[34]				$ 1,257
Ending balance	[4],[14],[19]	$ 1,149			$ 1,149
Investment, Identifier [Axis]: RA Outdoors LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.25%	[14],[19]		11.25%	[14],[19]		11.74%	[12],[20],[34]
Spread		6.75%	[14],[19],[21]		6.75%	[14],[19],[21]		6.75%	[12],[20],[22],[34]
PIK Rate	[8],[12],[20],[34]							11.74%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[34]				$ 13,155
Ending balance	[4],[14],[19]	$ 1			$ 1
Investment, Identifier [Axis]: RA Outdoors LLC, Secured Debt 3
Schedule of Investments [Line Items]
Spread	[14],[19],[21],[24]	6.75%			6.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19],[24]	$ 0			$ 0
Investment, Identifier [Axis]: RA Outdoors LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[14],[19]	11.25%			11.25%
Spread	[14],[19],[21]	6.75%			6.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 12,011			$ 12,011
Investment, Identifier [Axis]: RFG AcquireCo, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					11,401
Gross Reductions					0
Ending balance	[4]	11,401			11,401
Investment, Identifier [Axis]: RFG AcquireCo, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					10
Ending balance	[4],[24]	(10)			(10)
Investment, Identifier [Axis]: RFG AcquireCo, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance	[4],[24]	$ 0			$ 0
Investment, Identifier [Axis]: RFG AcquireCo, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.50%			12.50%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					1,040
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					33,666
Gross Reductions					0
Ending balance	[4]	$ 33,666			$ 33,666
Investment, Identifier [Axis]: Richardson Sales Solutions, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[12],[20],[28]							11.22%
Spread		6.50%	[14],[18],[19],[21],[24]		6.50%	[14],[18],[19],[21],[24]		6.75%	[12],[20],[22],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[28]				$ 3,517
Ending balance	[4],[14],[18],[19],[24]	$ 0			$ 0
Investment, Identifier [Axis]: Richardson Sales Solutions, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.78%	[14],[19]		10.78%	[14],[19]		11.38%	[12],[20]
Spread		6.50%	[14],[19],[21]		6.50%	[14],[19],[21]		6.75%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 34,046
Ending balance	[4],[14],[19]	$ 33,607			$ 33,607
Investment, Identifier [Axis]: Richardson Sales Solutions, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.71%	[14],[19]		10.71%	[14],[19]		11.43%	[12],[20]
Spread		6.50%	[14],[19],[21]		6.50%	[14],[19],[21]		6.75%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 22,101
Ending balance	[4],[14],[19]	$ 21,823			21,823
Investment, Identifier [Axis]: River Aggregates, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		(409)
Amount of Unrealized Gain/(Loss)					60		80
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					9,530	[2],[30]	3,710
Gross Additions					60		80
Gross Reductions					0		0
Ending balance		9,590	[4],[29]	3,790	9,590	[4],[29]	3,790
Investment, Identifier [Axis]: Robbins Bros. Jewelry, Inc., Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0	[4]	$ 0	$ 0	[4]	$ 0
Investment, Identifier [Axis]: Robbins Bros. Jewelry, Inc., Secured Debt 1
Schedule of Investments [Line Items]
PIK Rate		10.00%	[7],[9],[24]	10.00%	10.00%	[7],[9],[24]	10.00%	10.00%	[8],[23],[25]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					(39)	[2],[23],[25]	(26)
Gross Additions					0		2
Gross Reductions					12		0
Ending balance		$ (51)	[4],[9],[24]	$ (24)	$ (51)	[4],[9],[24]	$ (24)
Investment, Identifier [Axis]: Robbins Bros. Jewelry, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%	[9]	12.50%	12.50%	[9]	12.50%	12.50%	[23]
PIK Rate		10.00%	[7],[9]	10.00%	10.00%	[7],[9]	10.00%	10.00%	[8],[23]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		(12,978)
Amount of Interest, Fees or Dividends Credited to Income					0		1,083
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					14,562	[2],[23]	30,798
Gross Additions					0		19
Gross Reductions					427		13,429
Ending balance		$ 14,135	[4],[9]	$ 17,388	$ 14,135	[4],[9]	17,388
Investment, Identifier [Axis]: Roof Opco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		8.00%	[14],[19],[21],[24]		8.00%	[14],[19],[21],[24]		8.00%	[12],[20],[22],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				$ 0
Ending balance	[4],[14],[19],[24]	$ 0			$ 0
Investment, Identifier [Axis]: Roof Opco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.56%	[14],[19]		11.56%	[14],[19]		11.85%	[12],[20]
Spread		7.00%	[14],[19],[21]		7.00%	[14],[19],[21]		7.00%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 3,071
Ending balance	[4],[14],[19]	$ 2,901			$ 2,901
Investment, Identifier [Axis]: Roof Opco, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		13.56%	[14],[19]		13.56%	[14],[19]		13.85%	[12],[20]
Spread		9.00%	[14],[19],[21]		9.00%	[14],[19],[21]		9.00%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 3,052
Ending balance	[4],[14],[19]	$ 2,895			$ 2,895
Investment, Identifier [Axis]: Rug Doctor, LLC., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.49%	[14],[19]		12.49%	[14],[19]		12.52%	[12],[20]
Spread		8.00%	[14],[19],[21]		8.00%	[14],[19],[21]		8.00%	[12],[20],[22]
PIK Rate		2.00%	[7],[14],[19]		2.00%	[7],[14],[19]		2.00%	[8],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 5,888
Ending balance	[4],[14],[19]	$ 5,947			$ 5,947
Investment, Identifier [Axis]: Rug Doctor, LLC., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.49%	[14],[19]		12.49%	[14],[19]		12.52%	[12],[20]
Spread		8.00%	[14],[19],[21]		8.00%	[14],[19],[21]		8.00%	[12],[20],[22]
PIK Rate		2.00%	[7],[14],[19]		2.00%	[7],[14],[19]		2.00%	[8],[12],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 7,449
Ending balance	[4],[14],[19]	$ 7,107			7,107
Investment, Identifier [Axis]: SI East, LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[13]				13,660
Investment, Identifier [Axis]: SI East, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(1,190)		(1,480)
Amount of Interest, Fees or Dividends Credited to Income					0		1,858
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					13,660		19,170
Gross Additions					0		0
Gross Reductions					1,190		1,480
Ending balance		$ 12,470	[4]	$ 17,690	$ 12,470	[4]	$ 17,690
Investment, Identifier [Axis]: SI East, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.85%		11.75%	11.85%		11.75%	11.75%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(2)		(2)
Amount of Interest, Fees or Dividends Credited to Income					145		121
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,250	[2]	1,125
Gross Additions					2		2,252
Gross Reductions					2		1,127
Ending balance		$ 2,250	[4]	$ 2,250	$ 2,250	[4]	2,250
Investment, Identifier [Axis]: SI East, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.79%	[54]		12.79%	[54]		12.79%	[55]
Amount of Realized Gain/(Loss)					$ 0		0
Amount of Unrealized Gain/(Loss)					48		(241)
Amount of Interest, Fees or Dividends Credited to Income					4,368		2,599
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					67,661	[2],[55]	54,536
Gross Additions					0		0
Gross Reductions					0		54,536
Ending balance		$ 67,661	[4],[54]	$ 0	67,661	[4],[54]	$ 0
Investment, Identifier [Axis]: SI East, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate				12.62%			12.62%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							58
Amount of Interest, Fees or Dividends Credited to Income							1,464
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							0
Gross Additions							67,661
Gross Reductions							0
Ending balance				$ 67,661			67,661
Investment, Identifier [Axis]: SPAU Holdings, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				610
Ending balance	[4],[14]	$ 690			$ 690
Investment, Identifier [Axis]: SPAU Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[14],[18],[19]	11.46%			11.46%
Spread		7.00%	[14],[18],[19],[21]		7.00%	[14],[18],[19],[21]		7.50%	[12],[20],[22],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				$ 0
Ending balance	[4],[14],[18],[19]	$ 2,108			$ 2,108
Investment, Identifier [Axis]: SPAU Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.45%	[14],[19]		11.45%	[14],[19]		11.98%	[12],[20]
Spread		7.00%	[14],[19],[21]		7.00%	[14],[19],[21]		7.50%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 15,569
Ending balance	[4],[14],[19]	$ 15,489			15,489
Investment, Identifier [Axis]: Slick Innovations, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(450)		26
Amount of Interest, Fees or Dividends Credited to Income					873		234
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,440	[2],[13]	2,310
Gross Additions					0		26
Gross Reductions					450		456
Ending balance		$ 1,990	[4],[15]	$ 1,880	$ 1,990	[4],[15]	$ 1,880
Investment, Identifier [Axis]: Slick Innovations, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		14.00%		14.00%	14.00%		14.00%	14.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							86
Amount of Interest, Fees or Dividends Credited to Income							1,231
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 16,320	[2]	11,440
Gross Additions							7,600
Gross Reductions							960
Ending balance		$ 25,560	[4]	$ 18,080	25,560	[4]	18,080
Investment, Identifier [Axis]: Slick Innovations, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(140)
Amount of Interest, Fees or Dividends Credited to Income					510
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					16,320
Gross Additions					0
Gross Reductions					16,320
Ending balance		$ 0			$ 0
Investment, Identifier [Axis]: Slick Innovations, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.00%			14.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					265
Amount of Interest, Fees or Dividends Credited to Income					1,371
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					25,880
Gross Reductions					320
Ending balance		$ 25,560			25,560
Investment, Identifier [Axis]: South Coast Terminals Holdings, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				885
Ending balance	[4],[14]	$ 941			$ 941
Investment, Identifier [Axis]: South Coast Terminals Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		5.25%	[14],[19],[21],[24]		5.25%	[14],[19],[21],[24]		5.25%	[12],[20],[22],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				$ 0
Ending balance	[4],[14],[19],[24]	$ 0			$ 0
Investment, Identifier [Axis]: South Coast Terminals Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		9.68%	[14],[19]		9.68%	[14],[19]		9.71%	[12],[20]
Spread		5.25%	[14],[19],[21]		5.25%	[14],[19],[21]		5.25%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 53,320
Ending balance	[4],[14],[19]	$ 53,320			53,320
Investment, Identifier [Axis]: Student Resource Center, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2],[12]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0	[4],[14]	$ 0	$ 0	[4],[14]	$ 0
Investment, Identifier [Axis]: Student Resource Center, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate				8.50%			8.50%
PIK Rate				8.50%			8.50%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(1,546)
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							3,190
Gross Additions							0
Gross Reductions							1,546
Ending balance				$ 1,644			1,644
Investment, Identifier [Axis]: Student Resource Center, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[14]	8.50%			8.50%
PIK Rate	[7],[14]	8.50%			8.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14]	$ 886			$ 886
Investment, Identifier [Axis]: Student Resource Center, LLC, Secured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		8.50%			8.50%
PIK Rate		8.50%			8.50%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					(583)
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,644
Gross Additions					0
Gross Reductions					583
Ending balance		$ 1,061			$ 1,061
Investment, Identifier [Axis]: Student Resource Center, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		8.50%	[9],[14]		8.50%	[9],[14]		8.50%	[12],[23]
PIK Rate		8.50%	[7],[9],[14]		8.50%	[7],[9],[14]		8.50%	[8],[12],[23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[23]				$ 1,644
Ending balance	[4],[9],[14]	$ 1,061			$ 1,061
Investment, Identifier [Axis]: Student Resource Center, LLC, Secured Debt 2.1
Schedule of Investments [Line Items]
Total Rate		8.50%			8.50%
PIK Rate		8.50%			8.50%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					673
Amount of Interest, Fees or Dividends Credited to Income					9
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					204
Gross Additions					682
Gross Reductions					0
Ending balance		$ 886			886
Investment, Identifier [Axis]: Student Resource Center, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[12]							8.50%
PIK Rate	[8],[12]							8.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				204
Investment, Identifier [Axis]: Superior Rigging & Erecting Co., Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					5,420		490
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					10,530	[2]	5,940
Gross Additions					5,420		490
Gross Reductions					0		0
Ending balance		$ 15,950	[4]	6,430	$ 15,950	[4]	6,430
Investment, Identifier [Axis]: Superior Rigging & Erecting Co., Secured Debt
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							1,193
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							20,427
Gross Additions							73
Gross Reductions							20,500
Ending balance				0			0
Investment, Identifier [Axis]: TEC Services, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		5.50%	[14],[19],[21],[24]		5.50%	[14],[19],[21],[24]		5.75%	[12],[20],[22],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				$ (125)
Ending balance	[4],[14],[19],[24]	$ (85)			$ (85)
Investment, Identifier [Axis]: TEC Services, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Spread		5.50%	[14],[19],[21],[24]		5.50%	[14],[19],[21],[24]		5.75%	[12],[20],[22],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				$ (94)
Ending balance	[4],[14],[19],[24]	$ (64)			$ (64)
Investment, Identifier [Axis]: TEC Services, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		9.90%	[14],[19]		9.90%	[14],[19]		10.13%	[12],[20]
Spread		5.50%	[14],[19],[21]		5.50%	[14],[19],[21]		5.75%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 41,709
Ending balance	[4],[14],[19]	$ 31,808			$ 31,808
Investment, Identifier [Axis]: Team Public Choices, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		9.54%	[6],[49]		9.54%	[6],[49]		9.65%	[5]
Spread		5.00%	[6],[21],[49]		5.00%	[6],[21],[49]		5.00%	[5],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5]				$ 14,781
Ending balance	[4],[6],[49]	$ 14,525			14,525
Investment, Identifier [Axis]: Tectonic Financial, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[13]				4,720
Ending balance	[4],[15]	4,720			4,720
Investment, Identifier [Axis]: Tedder Industries, LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		0	[4]	0	0	[4]	0
Investment, Identifier [Axis]: Tedder Industries, LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		0	[4]	0	0	[4]	0
Investment, Identifier [Axis]: Tedder Industries, LLC, Preferred Member Units 3
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0	[4]	$ 0	$ 0	[4]	$ 0
Investment, Identifier [Axis]: Tedder Industries, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.00%	[9],[16]	12.00%	12.00%	[9],[16]	12.00%	12.00%	[17],[23]
PIK Rate		12.00%	[7],[9],[16]	12.00%	12.00%	[7],[9],[16]	12.00%	12.00%	[8],[17],[23]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(3)		0
Amount of Interest, Fees or Dividends Credited to Income					0		56
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,646	[2],[17],[23]	1,726
Gross Additions					0		0
Gross Reductions					2		0
Ending balance		$ 1,644	[4],[9],[16]	$ 1,726	$ 1,644	[4],[9],[16]	$ 1,726
Investment, Identifier [Axis]: Tedder Industries, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%	[9],[16]	12.00%	12.00%	[9],[16]	12.00%	12.00%	[17],[23]
PIK Rate		12.00%	[7],[9],[16]	12.00%	12.00%	[7],[9],[16]	12.00%	12.00%	[8],[17],[23]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(150)		(9,605)
Amount of Interest, Fees or Dividends Credited to Income					0		461
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					3,603	[2],[17],[23]	14,262
Gross Additions					0		0
Gross Reductions					151		9,605
Ending balance		$ 3,452	[4],[9],[16]	$ 4,657	3,452	[4],[9],[16]	4,657
Investment, Identifier [Axis]: Televerde, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					769		(2,164)
Amount of Interest, Fees or Dividends Credited to Income					298		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,252	[2]	4,734
Gross Additions					769		0
Gross Reductions					0		2,164
Ending balance		5,021	[4],[15]	2,570	5,021	[4],[15]	2,570
Investment, Identifier [Axis]: Televerde, LLC, Preferred Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,794	[2]	1,794
Gross Additions					0		0
Gross Reductions					0		1
Ending balance		1,794	[4]	1,793	1,794	[4]	1,793
Investment, Identifier [Axis]: Tex Tech Tennis, LLC, Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[30]				2,290
Ending balance	[4],[14],[29]	2,350			2,350
Investment, Identifier [Axis]: The Affiliati Network, LLC, Preferred Stock 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					115
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					6,400
Gross Additions					0
Gross Reductions					0
Ending balance		6,400			6,400
Investment, Identifier [Axis]: The Affiliati Network, LLC, Preferred Stock 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					287
Gross Additions					26
Gross Reductions					0
Ending balance		313			313
Investment, Identifier [Axis]: The Affiliati Network, LLC, Preferred Stock 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							53
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					287	[2],[13]	6,400
Gross Additions							0
Gross Reductions							0
Ending balance		313	[4],[15]	6,400	313	[4],[15]	6,400
Investment, Identifier [Axis]: The Affiliati Network, LLC, Preferred Stock 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					6,400	[2],[13]	172
Gross Additions							64
Gross Reductions							0
Ending balance		6,400	[4],[15]	236	6,400	[4],[15]	236
Investment, Identifier [Axis]: The Affiliati Network, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate								10.00%
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					36		9
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					394	[2]	150
Gross Additions					2,562		642
Gross Reductions					2,960		800
Ending balance		$ (4)	[4],[24]	$ (8)	$ (4)	[4],[24]	$ (8)
Investment, Identifier [Axis]: The Affiliati Network, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%		10.00%	13.00%		10.00%	10.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					51		0
Amount of Interest, Fees or Dividends Credited to Income					307		440
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,053	[2]	7,347
Gross Additions					57		14
Gross Reductions					0		1,200
Ending balance		$ 5,110	[4]	$ 6,161	$ 5,110	[4]	6,161
Investment, Identifier [Axis]: Titan Meter Midco Corp., Preferred Equity
Schedule of Investments [Line Items]
Total Rate		8.00%	[14]		8.00%	[14]		8.00%	[12]
PIK Rate		8.00%	[7],[14]		8.00%	[7],[14]		8.00%	[8],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				$ 1,400
Ending balance	[4],[14]	$ 1,400			$ 1,400
Investment, Identifier [Axis]: Titan Meter Midco Corp., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[14],[19]	10.81%			10.81%
Spread		6.50%	[14],[19],[21]		6.50%	[14],[19],[21]		6.50%	[12],[20],[22],[25]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				$ (105)
Ending balance	[4],[14],[19]	$ 1,439			$ 1,439
Investment, Identifier [Axis]: Titan Meter Midco Corp., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.80%	[14],[19]		10.80%	[14],[19]		10.83%	[12],[20]
Spread		6.50%	[14],[19],[21]		6.50%	[14],[19],[21]		6.50%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 33,927
Ending balance	[4],[14],[19]	$ 33,756			$ 33,756
Investment, Identifier [Axis]: Titan Meter Midco Corp., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[14],[19]	10.80%			10.80%
Spread	[14],[19],[21]	6.50%			6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 4,319			$ 4,319
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							(2,970)
Amount of Interest, Fees or Dividends Credited to Income							58
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					8,570	[2],[13]	12,740
Gross Additions							0
Gross Reductions							2,970
Ending balance		9,460	[4],[15]	9,770	9,460	[4],[15]	9,770
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					2		2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					(1)	[2],[25]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ (1)	[4],[24]	$ 0	$ (1)	[4],[24]	$ 0
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.50%		13.50%	13.50%		13.50%	13.50%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		71
Amount of Interest, Fees or Dividends Credited to Income					551		529
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					7,855	[2]	7,920
Gross Additions					14		0
Gross Reductions					0		0
Ending balance		$ 7,869	[4]	$ 7,920	7,869	[4]	7,920
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC,Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					890
Amount of Interest, Fees or Dividends Credited to Income					58
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					8,570
Gross Additions					890
Gross Reductions					0
Ending balance		$ 9,460			$ 9,460
Investment, Identifier [Axis]: U.S. TelePacific Corp., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.72%	[6],[9],[19]		11.72%	[6],[9],[19]		11.90%	[5],[20],[23]
Spread		7.40%	[6],[9],[19],[21]		7.40%	[6],[9],[19],[21]		7.40%	[5],[20],[22],[23]
PIK Rate		6.25%	[6],[7],[9],[19]		6.25%	[6],[7],[9],[19]		6.00%	[5],[8],[20],[23]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5],[20],[23]				$ 3,910
Ending balance	[4],[6],[9],[19]	$ 3,925			3,925
Investment, Identifier [Axis]: U.S. TelePacific Corp., Secured Debt 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5],[23]				0
Ending balance	[4],[6],[9]	0			0
Investment, Identifier [Axis]: UPS Intermediate, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				1,443
Ending balance	[4],[14]	$ 1,680			$ 1,680
Investment, Identifier [Axis]: UPS Intermediate, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		10.33%	[14],[19]		10.33%	[14],[19]		10.36%	[12],[20]
Spread		6.00%	[14],[19],[21]		6.00%	[14],[19],[21]		6.00%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 42,904
Ending balance	[4],[14],[19]	$ 42,827			42,827
Investment, Identifier [Axis]: UniTek Global Services, Inc., Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2],[5]	0
Gross Additions							0
Gross Reductions							0
Ending balance		0	[4],[6]	$ 0	0	[4],[6]	$ 0
Investment, Identifier [Axis]: UniTek Global Services, Inc., Common Stock 1.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance		$ 0			$ 0
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 1
Schedule of Investments [Line Items]
Total Rate		20.00%	[6]	20.00%	20.00%	[6]	20.00%
PIK Rate		20.00%	[6],[7]	20.00%	20.00%	[6],[7]	20.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(224)
Amount of Interest, Fees or Dividends Credited to Income							270
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							2,833
Gross Additions							271
Gross Reductions							224
Ending balance		$ 9,388	[4],[6]	$ 2,880	$ 9,388	[4],[6]	$ 2,880
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 1.1
Schedule of Investments [Line Items]
PIK Rate		20.00%			20.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					104
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					3,181
Gross Additions					1,633
Gross Reductions					4,814
Ending balance		$ 0			$ 0
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 2
Schedule of Investments [Line Items]
Total Rate		19.00%	[6]	20.00%	19.00%	[6]	20.00%	20.00%	[5]
PIK Rate		19.00%	[6],[7]	20.00%	19.00%	[6],[7]	20.00%	20.00%	[5],[8]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							140
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 4,272	[2],[5]	3,698
Gross Additions							140
Gross Reductions							0
Ending balance		$ 0	[4],[6]	$ 3,838	$ 0	[4],[6]	$ 3,838
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 2.1
Schedule of Investments [Line Items]
Total Rate		20.00%			20.00%
PIK Rate		20.00%			20.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					(788)
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,272
Gross Additions					5,116
Gross Reductions					0
Ending balance		$ 9,388			$ 9,388
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 3
Schedule of Investments [Line Items]
Total Rate		13.50%	[6]	19.00%	13.50%	[6]	19.00%	19.00%	[5]
PIK Rate		13.50%	[6],[7]	19.00%	13.50%	[6],[7]	19.00%	19.00%	[5],[8]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 0	[2],[5]	0
Gross Additions							0
Gross Reductions							0
Ending balance		$ 0	[4],[6]	$ 0	$ 0	[4],[6]	$ 0
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 3.1
Schedule of Investments [Line Items]
Total Rate		19.00%			19.00%
PIK Rate		19.00%			19.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance		$ 0			0
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 4
Schedule of Investments [Line Items]
Total Rate				13.50%			13.50%	13.50%	[5]
PIK Rate				13.50%			13.50%	13.50%	[5],[8]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 0	[2],[5]	0
Gross Additions							0
Gross Reductions							0
Ending balance				$ 0			$ 0
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 4.1
Schedule of Investments [Line Items]
Total Rate		13.50%			13.50%
PIK Rate		13.50%			13.50%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance		$ 0			0
Investment, Identifier [Axis]: UniTek Global Services, Inc., Secured Convertible Debt 1
Schedule of Investments [Line Items]
Total Rate				15.00%			15.00%	15.00%	[5]
PIK Rate				15.00%			15.00%	15.00%	[5],[8]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							132
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 5,642	[2],[5]	3,889
Gross Additions							132
Gross Reductions							0
Ending balance				$ 4,021			$ 4,021
Investment, Identifier [Axis]: UniTek Global Services, Inc., Secured Convertible Debt 1.1
Schedule of Investments [Line Items]
PIK Rate		15.00%			15.00%
Amount of Realized Gain/(Loss)					$ 3,762
Amount of Unrealized Gain/(Loss)					(2,384)
Amount of Interest, Fees or Dividends Credited to Income					41
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,642
Gross Additions					505
Gross Reductions					6,147
Ending balance		$ 0			0
Investment, Identifier [Axis]: UniTek Global Services, Inc., Secured Convertible Debt 2
Schedule of Investments [Line Items]
Total Rate				15.00%			15.00%	15.00%	[5]
PIK Rate				15.00%			15.00%	15.00%	[5],[8]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							65
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 2,663	[2],[5]	1,908
Gross Additions							64
Gross Reductions							0
Ending balance				$ 1,972			1,972
Investment, Identifier [Axis]: UniTek Global Services, Inc., Secured Convertible Debt 2.1
Schedule of Investments [Line Items]
PIK Rate		15.00%			15.00%
Amount of Realized Gain/(Loss)					$ 1,743
Amount of Unrealized Gain/(Loss)					(1,155)
Amount of Interest, Fees or Dividends Credited to Income					21
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,663
Gross Additions					235
Gross Reductions					2,898
Ending balance		$ 0			0
Investment, Identifier [Axis]: UniTek Global Services, Inc.,Preferred Stock 1
Schedule of Investments [Line Items]
Total Rate	[5],[13]							20.00%
PIK Rate	[5],[8],[13]							20.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5],[13]				3,181
Investment, Identifier [Axis]: UnionRock Energy Fund II, LP Interests
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,732
Gross Additions					0
Gross Reductions					335
Ending balance		4,397			4,397
Investment, Identifier [Axis]: UnionRock Energy Fund II, LP, LP Interests
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							197
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,732	[2],[34],[38],[39]	5,694
Gross Additions							198
Gross Reductions							168
Ending balance		4,397	[4],[36],[40],[41]	5,724	4,397	[4],[36],[40],[41]	5,724
Investment, Identifier [Axis]: UnionRock Energy Fund III, LP Interests
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(405)
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,612
Gross Additions					447
Gross Reductions					887
Ending balance		5,172			5,172
Investment, Identifier [Axis]: UnionRock Energy Fund III, LP, LP Interests
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							994
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,612	[2],[34],[38],[39]	2,838
Gross Additions							3,494
Gross Reductions							0
Ending balance		$ 5,172	[4],[36],[40],[41]	6,332	$ 5,172	[4],[36],[40],[41]	6,332
Investment, Identifier [Axis]: Universal Wellhead Services Holdings, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							0
Gross Additions							0
Gross Reductions							0
Ending balance				$ 0			$ 0
Investment, Identifier [Axis]: Universal Wellhead Services Holdings, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Total Rate				14.00%			14.00%
PIK Rate				14.00%			14.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(150)
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							150
Gross Additions							0
Gross Reductions							150
Ending balance				$ 0			$ 0
Investment, Identifier [Axis]: Urgent DSO LLC, Preferred Equity
Schedule of Investments [Line Items]
Total Rate		9.00%	[15]	9.00%	9.00%	[15]	9.00%	9.00%	[13]
PIK Rate		9.00%	[7],[15]	9.00%	9.00%	[7],[15]	9.00%	9.00%	[8],[13]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					194		136
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,320	[2],[13]	0
Gross Additions					194		4,136
Gross Reductions					0		0
Ending balance		$ 4,514	[4],[15]	$ 4,136	$ 4,514	[4],[15]	$ 4,136
Investment, Identifier [Axis]: Urgent DSO LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.50%		13.50%	13.50%		13.50%	13.50%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					606		631
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					8,727	[2]	0
Gross Additions					8		8,718
Gross Reductions					0		0
Ending balance		$ 8,735	[4]	$ 8,718	$ 8,735	[4]	8,718
Investment, Identifier [Axis]: UserZoom Technologies, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.78%	[14],[19]		11.78%	[14],[19]		12.75%	[12],[20]
Spread		7.50%	[14],[19],[21]		7.50%	[14],[19],[21]		7.50%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 4,000
Ending balance	[4],[14],[19]	$ 4,000			4,000
Investment, Identifier [Axis]: VORTEQ Coil Finishers, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[13]				2,640
Ending balance	[4],[14],[15]	2,820			2,820
Investment, Identifier [Axis]: VVS Holdco LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					99		204
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					12,240	[2],[13],[30]	12,240
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 12,240	[4],[15],[29]	$ 12,240	$ 12,240	[4],[15],[29]	$ 12,240
Investment, Identifier [Axis]: VVS Holdco LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.00%	[19],[21],[24]	6.00%	6.00%	[19],[21],[24]	6.00%	6.00%	[20],[22],[25]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					8		8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2],[20],[25]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0	[4],[19],[24]	$ 0	$ 0	[4],[19],[24]	$ 0
Investment, Identifier [Axis]: VVS Holdco LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.50%		11.50%	11.50%		11.50%	11.50%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					1,491		1,648
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					25,661	[2]	28,035
Gross Additions					30		34
Gross Reductions					1,281		1,160
Ending balance		$ 24,410	[4]	$ 26,909	24,410	[4]	26,909
Investment, Identifier [Axis]: Veregy Consolidated, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread	[5],[20],[22],[25]							5.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5],[20],[25]				(185)
Investment, Identifier [Axis]: Veregy Consolidated, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[5],[20]							10.85%
Spread	[5],[20],[22]							6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5],[20]				17,681
Investment, Identifier [Axis]: Victory Energy Operations, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					232
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2]				22,686
Gross Additions					0
Gross Reductions					215
Ending balance	[4],[15]	$ 22,471			$ 22,471
Investment, Identifier [Axis]: Victory Energy Operations, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.00%			13.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					68
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[25]				(33)
Gross Additions					1,727
Gross Reductions					0
Ending balance	[4]	$ 1,694			$ 1,694
Investment, Identifier [Axis]: Victory Energy Operations, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%			13.00%			13.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					3,202
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2]				47,792
Gross Additions					49
Gross Reductions					0
Ending balance	[4]	$ 47,841			47,841
Investment, Identifier [Axis]: Vision Interests, Inc., Series A Preferred Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							3,000
Gross Additions							0
Gross Reductions							0
Ending balance				3,000			3,000
Investment, Identifier [Axis]: Vistar Media, Inc., Preferred Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				$ 4,676
Investment, Identifier [Axis]: Vitesse Systems, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.43%	[14],[18]		11.43%	[14],[18]		11.55%	[12]
Spread		7.00%	[14],[18],[21]		7.00%	[14],[18],[21]		7.00%	[12],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				$ 5,795
Ending balance	[4],[14],[18]	$ 7,727			$ 7,727
Investment, Identifier [Axis]: Vitesse Systems, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.44%	[14],[19]		11.44%	[14],[19]		11.47%	[12],[20]
Spread		7.00%	[14],[19],[21]		7.00%	[14],[19],[21]		7.00%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 42,075
Ending balance	[4],[14],[19]	$ 41,863			41,863
Investment, Identifier [Axis]: Volusion, LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance		0			0
Investment, Identifier [Axis]: Volusion, LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					22
Amount of Unrealized Gain/(Loss)					(1,627)
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					7,003
Gross Additions					22
Gross Reductions					2,745
Ending balance		4,280			4,280
Investment, Identifier [Axis]: Volusion, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		0	[4]	0	0	[4]	0
Investment, Identifier [Axis]: Volusion, LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					7,003	[2]	0
Gross Additions							0
Gross Reductions							0
Ending balance		4,280	[4]	0	4,280	[4]	0
Investment, Identifier [Axis]: Volusion, LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							1,867
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2]	7,250
Gross Additions							1,868
Gross Reductions							2,118
Ending balance		0	[4]	7,000	0	[4]	7,000
Investment, Identifier [Axis]: Volusion, LLC, Preferred Member Units 3
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0	[4]	$ 0	$ 0	[4]	$ 0
Investment, Identifier [Axis]: Volusion, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		10.00%	[16]	10.00%	10.00%	[16]	10.00%	10.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					106		106
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,100	[2]	2,100
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 2,100	[4],[16]	$ 2,100	2,100	[4],[16]	2,100
Investment, Identifier [Axis]: Wall Street Prep, Inc., Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				1,210
Investment, Identifier [Axis]: Wall Street Prep, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread	[12],[20],[22],[25]							7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[25]				(2)
Investment, Identifier [Axis]: Wall Street Prep, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[12],[20]							11.74%
Spread	[12],[20],[22]							7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				1,759
Investment, Identifier [Axis]: Wash & Wax Systems LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14]	$ 3,660			$ 3,660
Investment, Identifier [Axis]: Wash & Wax Systems LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[14],[19]	9.78%			9.78%
Spread	[14],[19],[21]	5.50%			5.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 10			$ 10
Investment, Identifier [Axis]: Wash & Wax Systems LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[14],[19]	9.78%			9.78%
Spread	[14],[19],[21]	5.50%			5.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 7,388			$ 7,388
Investment, Identifier [Axis]: Wash & Wax Systems LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[14]	12.00%			12.00%
PIK Rate	[7],[14]	12.00%			12.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14]	$ 4,829			$ 4,829
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.00%	[14]		12.00%	[14]		12.00%	[12]
PIK Rate		4.00%	[7],[14]		4.00%	[7],[14]		4.00%	[8],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				$ 2,142
Ending balance	[4],[14]	$ 2,181			$ 2,181
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%	[14]		12.00%	[14]		12.00%	[12]
PIK Rate		4.00%	[7],[14]		4.00%	[7],[14]		4.00%	[8],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				$ 369
Ending balance	[4],[14]	$ 378			$ 378
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.00%	[14]		12.00%	[14]		12.00%	[12]
PIK Rate		4.00%	[7],[14]		4.00%	[7],[14]		4.00%	[8],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				$ 15,227
Ending balance	[4],[14]	$ 15,503			$ 15,503
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		12.00%	[14]		12.00%	[14]		12.00%	[12]
PIK Rate		4.00%	[7],[14]		4.00%	[7],[14]		4.00%	[8],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12]				$ 12,180
Ending balance	[4],[14]	$ 12,400			12,400
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[13]				4,920
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[12],[20],[50]							9.47%
Spread	[12],[20],[22],[50]							5.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[50]				2,381
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[12],[20]							9.60%
Spread	[12],[20],[22]							5.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				10,550
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[12],[20]							9.60%
Spread	[12],[20],[22]							5.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				5,250
Investment, Identifier [Axis]: Wildcats Topco LLC (NVS Heritage), Common Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					22,427
Gross Reductions					0
Ending balance		22,427			22,427
Investment, Identifier [Axis]: Wildcats Topco LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4]	$ 22,427			$ 22,427
Investment, Identifier [Axis]: Winter Services LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[12],[20],[28]							12.81%
Spread		8.00%	[14],[18],[19],[21],[24]		8.00%	[14],[18],[19],[21],[24]		8.00%	[12],[20],[22],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20],[28]				$ 2,138
Ending balance	[4],[14],[18],[19],[24]	$ (29)			$ (29)
Investment, Identifier [Axis]: Winter Services LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.56%	[14],[19]		12.56%	[14],[19]		12.85%	[12],[20]
Spread		8.00%	[14],[19],[21]		8.00%	[14],[19],[21]		8.00%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 1,821
Ending balance	[4],[14],[19]	$ 1,874			$ 1,874
Investment, Identifier [Axis]: Winter Services LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.56%	[14],[19]		11.56%	[14],[19]		11.85%	[12],[20]
Spread		7.00%	[14],[19],[21]		7.00%	[14],[19],[21]		7.00%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 7,035
Ending balance	[4],[14],[19]	$ 7,240			$ 7,240
Investment, Identifier [Axis]: Winter Services LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		13.56%	[14],[19]		13.56%	[14],[19]		13.85%	[12],[20]
Spread		9.00%	[14],[19],[21]		9.00%	[14],[19],[21]		9.00%	[12],[20],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 7,035
Ending balance	[4],[14],[19]	$ 7,240			7,240
Investment, Identifier [Axis]: World Micro Holdings, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					198		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					3,845	[2],[13]	3,845
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 3,845	[4],[15]	$ 3,845	$ 3,845	[4],[15]	$ 3,845
Investment, Identifier [Axis]: World Micro Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.00%		13.00%	11.00%		13.00%	13.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					579		778
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					10,702	[2]	12,028
Gross Additions					15		12
Gross Reductions					878		0
Ending balance		$ 9,839	[4]	$ 12,040	$ 9,839	[4]	12,040
Investment, Identifier [Axis]: Xenon Arc, Inc. Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[14],[19]	10.17%			10.17%
Spread	[14],[19],[21]	5.75%			5.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 23,692			$ 23,692
Investment, Identifier [Axis]: Xenon Arc, Inc. Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[14],[19]	10.12%			10.12%
Spread	[14],[19],[21]	5.75%			5.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 37,249			$ 37,249
Investment, Identifier [Axis]: Xenon Arc, Inc. Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[14],[19]	10.15%			10.15%
Spread	[14],[19],[21]	5.75%			5.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 10,605			$ 10,605
Investment, Identifier [Axis]: Xenon Arc, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[12],[20]							9.70%
Spread	[12],[20],[22]							5.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				23,814
Investment, Identifier [Axis]: Xenon Arc, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[12],[20]							9.98%
Spread	[12],[20],[22]							5.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 37,442
Investment, Identifier [Axis]: YS Garments, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.88%	[6],[19]		11.88%	[6],[19]		12.25%	[5],[20],[50]
Spread		7.50%	[6],[19],[21]		7.50%	[6],[19],[21]		7.50%	[5],[20],[22],[50]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[5],[20],[50]				$ 9,949
Ending balance	[4],[6],[19]	$ 9,137			$ 9,137
Investment, Identifier [Axis]: ZRG Partners, LLC Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[14],[19]	12.50%			12.50%
Spread	[14],[19],[21]	5.00%			5.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 5,211			$ 5,211
Investment, Identifier [Axis]: ZRG Partners, LLC Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[14],[19],[49]	10.28%			10.28%
Spread	[14],[19],[21],[49]	6.00%			6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19],[49]	$ 8,019			$ 8,019
Investment, Identifier [Axis]: ZRG Partners, LLC Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[14],[19]	10.17%			10.17%
Spread	[14],[19],[21]	6.00%			6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 6,535			$ 6,535
Investment, Identifier [Axis]: ZRG Partners, LLC Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[14],[19]	10.31%			10.31%
Spread	[14],[19],[21]	6.00%			6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[4],[14],[19]	$ 46,784			$ 46,784
Investment, Identifier [Axis]: ZRG Partners, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[12],[20]							12.50%
Spread	[12],[20],[22]							5.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				695
Investment, Identifier [Axis]: ZRG Partners, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[12],[20]							10.74%
Spread	[12],[20],[22]							6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				4,158
Investment, Identifier [Axis]: ZRG Partners, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[12],[20]							10.28%
Spread	[12],[20],[22]							6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				6,568
Investment, Identifier [Axis]: ZRG Partners, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[12],[20]							10.66%
Spread	[12],[20],[22]							6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				47,050
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(270)		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					320	[2]	0
Gross Additions					0		0
Gross Reductions					270		0
Ending balance		$ 50	[4]	$ 0	$ 50	[4]	$ 0
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%			12.00%			12.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					107
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2]				1,750
Gross Additions					0
Gross Reductions					0
Ending balance	[4]	$ 1,750			1,750
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				12.00%			12.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							27
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							450
Gross Additions							0
Gross Reductions							0
Ending balance				$ 450			$ 450
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				6.50%			6.50%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							33
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							945
Gross Additions							0
Gross Reductions							0
Ending balance				$ 945			$ 945
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate				14.00%			14.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(369)
Amount of Interest, Fees or Dividends Credited to Income							195
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							2,080
Gross Additions							0
Gross Reductions							370
Ending balance				$ 1,710			1,710
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC, Warrants
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[2],[10]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0	[4],[11]	$ 0	0	[4],[11]	$ 0
Investment, Identifier [Axis]: Zips Car Wash, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[12],[20]							11.91%
Spread	[12],[20],[22]							7.25%
PIK Rate	[8],[12],[20]							11.91%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				14,852
Investment, Identifier [Axis]: Zips Car Wash, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[12],[20]							11.91%
Spread	[12],[20],[22]							7.25%
PIK Rate	[8],[12],[20]							11.91%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[2],[12],[20]				$ 3,723
[1] All portfolio company headquarters are based in the United States, unless otherwise noted. [2] Investment Fair Value was determined using significant unobservable inputs, unless otherwise noted. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for further discussion. Negative fair value is the result of the capitalized discount on the loan or the unfunded commitment being valued below par. [3] All investments are LMM portfolio investments, unless otherwise noted. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of LMM portfolio investments. All of the Company’s investments, unless otherwise noted, are encumbered either as security for the Corporate Facility or SPV Facility or in support of the debentures guaranteed by the SBA and issued by the Funds. [4] Investment Fair Value was determined using significant unobservable inputs, unless otherwise noted. See Note C — Fair Value Hierarchy for Investments —Portfolio Composition for further discussion. Negative fair value is the result of the capitalized discount on the loan or the unfunded commitment being valued below par. [5] Middle Market portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Middle Market portfolio investments. [6] Middle Market (as defined below) portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Middle Market portfolio investments. [7] Investments may have a portion, or all, of their income received from Paid-in-Kind (“PIK”) interest or dividends. PIK interest income and cumulative dividend income represent income not paid currently in cash. The difference between the Total Rate and PIK Rate represents the cash rate as of June 30, 2025. [8] Investments may have a portion, or all, of their income received from PIK interest or dividends. PIK interest income and cumulative dividend income represent income not paid currently in cash. The difference between the Total Rate and PIK Rate represents the cash rate as of December 31, 2024. [9] Non-accrual and non-income producing debt investment. [10] Warrants are presented in equivalent shares/units with a strike price of $0.01 per share/unit. [11] (27)Warrants are presented in equivalent shares/units with a strike price of $0.01 per share/unit. [12] Private Loan portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Private Loan portfolio investments. [13] Income producing through dividends or distributions. [14] Private Loan (as defined below) portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Private Loan portfolio investments. [15] Income producing through dividends or distributions. [16] Maturity date is under on-going negotiations with the portfolio company and other lenders, if applicable. [17] Maturity date is under on-going negotiations with the portfolio company and other lenders, if applicable. [18] Revolving line of credit facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of June 30, 2025. [19] Index based floating interest rate is subject to contractual minimum interest rate. As noted in this schedule, 96% of the loans (based on the par amount) contain Term Secured Overnight Financing Rate (“SOFR”) floors which range between 0.75% and 5.25%, with a weighted-average floor of 1.30%. [20] Index based floating interest rate is subject to contractual minimum interest rate. As noted in this schedule, 95% of the loans (based on the par amount) contain Term SOFR floors which range between 0.50% and 5.25%, with a weighted-average floor of 1.32%. [21] A majority of the variable rate loans in the Investment Portfolio (as defined below) bear interest at a rate that may be determined by reference to either SOFR (“SF”) or an alternate base rate (commonly based on the federal funds rate or the prime rate (“P”)), which typically resets every one, three, or six months at the borrower’s option. SOFR based contracts may include a credit spread adjustment (the “Adjustment”) that is charged in addition to the stated spread. The Adjustment is applied when the SOFR, plus the Adjustment, exceeds the stated floor rate, as applicable. As of June 30, 2025, SOFR based contracts in the portfolio had Adjustments ranging from 0.10% to 0.26%. [22] A majority of the variable rate loans in the Investment Portfolio bear interest at a rate that may be determined by reference to either SOFR (“SF”) or an alternate base rate (commonly based on the federal funds rate or the prime rate (“P”)), which typically resets every one, three, or six months at the borrower’s option. SOFR based contracts may include a credit spread adjustment (the “Adjustment”) that is charged in addition to the stated spread. The Adjustment is applied when the SOFR, plus the Adjustment, exceeds the stated floor rate, as applicable. As of December 31, 2024, SOFR based contracts in the portfolio had Adjustments ranging from 0.10% to 0.26%. [23] Non-accrual and non-income producing debt investment. [24] The position is unfunded and no interest income is being earned as of June 30, 2025. The position may earn a nominal unused facility fee on committed amounts. [25] The position is unfunded and no interest income is being earned as of December 31, 2024. The position may earn a nominal unused facility fee on committed amounts. [26] (33)Index based floating interest rate is subject to contractual maximum base rate of 3.00%. [27] Index based floating interest rate is subject to contractual maximum base rate of 3.00%. [28] Revolving line of credit facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2024. [29] (29)Shares/Units represent ownership in a related real estate or holding entity. [30] Shares/Units represent ownership in a related real estate or holding entity. [31] Investment purchased through a distressed sale with the intention to be sold on a short-term basis. [32] The Company has entered into an intercreditor agreement that entitles the Company to the “last out” tranche of the first lien secured loans, whereby the “first out” tranche will receive priority as to the “last out” tranche with respect to payments of principal, interest, and any other amounts due thereunder. Therefore, the Company receives a higher interest rate than the contractual stated interest rate of SOFR+6.50% (Floor 1.50%) per the credit agreement and the Consolidated Schedule of Investments above reflects such higher rate. [33] The Company has entered into an intercreditor agreement that entitles the Company to the “last out” tranche of the first lien secured loans, whereby the “first out” tranche will receive priority as to the “last out” tranche with respect to payments of principal, interest, and any other amounts due thereunder. Therefore, the Company receives a higher interest rate than the contractual stated interest rate of SOFR+7.00% (Floor 1.50%) per the credit agreement and the Consolidated Schedule of Investments above reflects such higher rate. [34] Investment is not a qualifying asset as defined under Section 55(a) of the 1940 Act. Qualifying assets must represent at least 70% of total assets at the time of acquisition of any additional non-qualifying assets. [35] Portfolio company headquarters are located outside of the United States. [36] Investment is not a qualifying asset as defined under Section 55(a) of the 1940 Act. Qualifying assets must represent at least 70% of total assets at the time of acquisition of any additional non-qualifying assets. [37] Portfolio company headquarters are located outside of the United States. [38] Investment is not unitized. Presentation is made in percent of fully diluted ownership unless otherwise indicated. [39] Other Portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Other Portfolio investments. [40] (30)Investment is not unitized. Presentation is made in percent of fully diluted ownership unless otherwise indicated. [41] Other Portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Other Portfolio investments. [42] Effective yield as of December 31, 2024 was approximately 4.43% on the Dreyfus Government Cash Management. [43] (36)Effective yield as of June 30, 2025 was approximately 4.18% on the Dreyfus Government Cash Management. [44] Effective yield as of June 30, 2025 was approximately 3.99% on the Fidelity Government Fund. [45] Effective yield as of December 31, 2024 was approximately 4.10% on the Fidelity Treasury. [46] (31)Effective yield as of June 30, 2025 was approximately 3.95% on the Fidelity Treasury. [47] (34)Index based floating interest rate is subject to contractual maximum base rate of 4.00%. [48] Index based floating interest rate is subject to contractual maximum base rate of 1.50%. [49] Each new draw or funding on the facility has a different floating rate reset date. The rate presented represents a weighted-average rate for borrowings under the facility, as of June 30, 2025. [50] Each new draw or funding on the facility has a different floating rate reset date. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2024. [51] Investment is accruing income at the fixed cash rate of 2.50% as of June 30, 2025. [52] External Investment Manager. Investment is not encumbered as security for the Credit Facilities or in support of the SBA-guaranteed debentures issued by the Funds. [53] External Investment Manager (as defined below). Investment is not encumbered as security for the Credit Facilities (as defined below) or in support of the SBA-guaranteed debentures issued by the Funds. [54] The Company has entered into an intercreditor agreement that entitles the Company to the “last out” tranche of the first lien secured loans, whereby the “first out” tranche will receive priority as to the “last out” tranche with respect to payments of principal, interest, and any other amounts due thereunder. Therefore, the Company receives a higher interest rate than the contractual stated interest rate of 11.85% per the credit agreement and the Consolidated Schedule of Investments above reflects such higher rate. [55] The Company has entered into an intercreditor agreement that entitles the Company to the “last out” tranche of the first lien secured loans, whereby the “first out” tranche will receive priority as to the “last out” tranche with respect to payments of principal, interest, and any other amounts due thereunder. Therefore, the Company receives a higher interest rate than the contractual stated interest rate of 11.75% per the credit agreement and the Consolidated Schedule of Investments above reflects such higher rate.