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

v3.25.1

Consolidated Schedule of Investments In and Advances to Affiliates (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2025		Mar. 31, 2024	Dec. 31, 2024
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		$ (29,545)		$ (12,367)
Amount of Unrealized Gain/(Loss)		63,190		40,647
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[1],[2]	4,932,669
Ending balance	[3],[4],[5]	5,054,139
Control investments
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		22		10
Amount of Unrealized Gain/(Loss)		401		32,070
Amount of Interest, Fees or Dividends Credited to Income				51,119
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,087,890	[6],[7]	2,006,698
Gross Additions				117,042
Gross Reductions				63,458
Ending balance		2,172,956	[4],[8]	2,051,212
Affiliate investments
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		2,064		(7,110)
Amount of Unrealized Gain/(Loss)		39,003		5,925
Amount of Interest, Fees or Dividends Credited to Income		23,734		17,728
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		846,798	[6],[9]	615,002
Gross Additions		115,176		71,659
Gross Reductions		68,980		29,782
Ending balance		899,326	[4],[10]	665,949
Investment, Identifier [Axis]: Fidelity Government Fund
Schedule of Investments [Line Items]
Total Rate					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
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)		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		383		315
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		383		315
Investment, Identifier [Axis]: 2717 MH, L.P., LP Interests (2717 MH, L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		10
Amount of Unrealized Gain/(Loss)		(166)		0
Amount of Interest, Fees or Dividends Credited to Income		0		40
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		8,818		6,050
Gross Additions		80		10
Gross Reductions		166		10
Ending balance		8,732		6,050
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		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		1,226		996
Gross Additions		0		1
Gross Reductions		0		0
Ending balance		$ 1,226		997
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt 3.1
Schedule of Investments [Line Items]
Total Rate		10.00%
PIK Rate		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
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	[11]	0
Gross Additions				0
Gross Reductions				0
Ending balance		0	[12]	$ 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
Investment, Identifier [Axis]: AAC Holdings, Inc., Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[12]	8,520
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)		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		8,520
Gross Reductions		0
Ending balance		$ 8,520
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				18.00%	18.00%	[11]
PIK Rate		10.00%	[12],[13],[14]	18.00%	18.00%	[11],[15]
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(1)
Amount of Interest, Fees or Dividends Credited to Income				22
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 609	[11]	418
Gross Additions				37
Gross Reductions				1
Ending balance		$ 3,109	[12],[14]	$ 454
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		18.00%
PIK Rate		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
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				18.00%	18.00%	[11]
PIK Rate		10.00%	[12],[13],[14]	18.00%	18.00%	[11],[15]
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(21)
Amount of Interest, Fees or Dividends Credited to Income				685
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 17,365	[11]	13,895
Gross Additions				1,200
Gross Reductions				21
Ending balance		$ 3,109	[12],[14]	15,074
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt 2.1
Schedule of Investments [Line Items]
Total Rate		18.00%
PIK Rate		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
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt 4.1
Schedule of Investments [Line Items]
Total Rate		10.00%
PIK Rate		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
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	[11],[16]	0
Gross Additions				0
Gross Reductions				0
Ending balance		0	[12],[17]	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
Investment, Identifier [Axis]: AMEREQUIP LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[19]	570
Ending balance	[20],[21]	$ 480
Investment, Identifier [Axis]: ASC Interests, LLC, Preferred 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				266
Gross Additions				0
Gross Reductions				0
Ending balance				266
Investment, Identifier [Axis]: ASC Interests, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%
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		1,598
Gross Additions		0
Gross Reductions		73
Ending balance		1,525
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		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		100
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		0		$ 100
Investment, Identifier [Axis]: ASC Interests, LLC, Preferred 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
Investment, Identifier [Axis]: ASC Interests, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.00%	[22]	13.00%	13.00%	[23]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		13		13
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		400	[23]	400
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 400	[22]	$ 400
Investment, Identifier [Axis]: ASC Interests, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%	[22]	13.00%	13.00%	[23]
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				54
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 1,598	[23]	1,597
Gross Additions				1
Gross Reductions				0
Ending balance		1,525	[22]	1,598
Investment, Identifier [Axis]: ATS Operating, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	850
Ending balance	[20]	$ 850
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.56%	[20],[24],[25]		10.85%	[18],[26]
Spread		6.00%	[20],[24],[25],[27]		6.00%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 360
Ending balance	[20],[24],[25]	$ 900
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		9.57%	[20],[25]		9.85%	[18],[26]
Spread		5.00%	[20],[25],[27]		5.00%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 6,660
Ending balance	[20],[25]	$ 6,660
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.57%	[20],[25]		11.85%	[18],[26]
Spread		7.00%	[20],[25],[27]		7.00%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 6,660
Ending balance	[20],[25]	6,660
Investment, Identifier [Axis]: ATS Workholding, 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	[18]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[20]	$ 0
Investment, Identifier [Axis]: ATS Workholding, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		5.00%	[14],[20]	5.00%	5.00%	[18],[29]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(155)		(238)
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	[18],[29]	328
Gross Additions		42		167
Gross Reductions		155		238
Ending balance		$ 0	[14],[20]	$ 257
Investment, Identifier [Axis]: ATS Workholding, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		5.00%	[14],[20],[22]	5.00%	5.00%	[18],[23],[29]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(143)		(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		143	[18],[23],[29]	473
Gross Additions		0		0
Gross Reductions		143		130
Ending balance		0	[14],[20],[22]	343
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[19]	896
Ending balance	[20],[21]	$ 1,130
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.25%	[20],[25],[27],[30]		7.25%	[18],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	$ (90)
Ending balance	[20],[25],[30]	$ (82)
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.70%	[20],[25]		11.73%	[18],[26]
Spread		7.25%	[20],[25],[27]		7.25%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 24,073
Ending balance	[20],[25]	$ 23,917
Investment, Identifier [Axis]: Adams Publishing Group, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.00%	[20],[25],[32]		11.00%	[18],[26],[33]
Spread		7.00%	[20],[25],[27],[32]		7.00%	[18],[26],[28],[33]
PIK Rate		1.00%	[13],[20],[25],[32]		1.00%	[15],[18],[26],[33]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[33]	$ 7,773
Ending balance	[20],[25],[32]	$ 7,775
Investment, Identifier [Axis]: Adams Publishing Group, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.00%	[20],[25],[32]		11.00%	[18],[26],[33]
Spread		7.00%	[20],[25],[27],[32]		7.00%	[18],[26],[28],[33]
PIK Rate		1.00%	[13],[20],[25],[32]		1.00%	[15],[18],[26],[33]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[33]	$ 18,504
Ending balance	[20],[25],[32]	$ 17,880
Investment, Identifier [Axis]: American Health Staffing Group, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		5.00%	[20],[25],[27],[30]		5.00%	[18],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	$ (5)
Ending balance	[20],[25],[30]	$ (4)
Investment, Identifier [Axis]: American Health Staffing Group, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%	[20],[25]		12.50%	[18],[26]
Spread		5.00%	[20],[25],[27]		5.00%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 6,162
Ending balance	[20],[25]	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)		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		8,970
Gross Reductions		0
Ending balance	[20]	$ 8,970
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.95%	[20],[25]		14.49%	[18],[26]
Spread		8.50%	[20],[25],[27]		9.75%	[18],[26],[28]
PIK Rate		12.95%	[13],[20],[25]		14.49%	[15],[18],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 5,985
Ending balance	[20],[25]	$ 7,410
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		12.95%
Spread		8.50%
PIK Rate		12.95%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
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		7,410
Gross Reductions		0
Ending balance		$ 7,410
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.95%	[20],[25]		14.49%	[18],[26]
Spread		8.50%	[20],[25],[27]		9.75%	[18],[26],[28]
PIK Rate		12.95%	[13],[20],[25]		14.49%	[15],[18],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 9,738
Ending balance	[20],[25]	$ 7,410
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 2.1
Schedule of Investments [Line Items]
Total Rate		12.95%
Spread		8.50%
PIK Rate		12.95%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
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		7,410
Gross Reductions		0
Ending balance		7,410
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[18],[26],[29]				16.49%
Spread	[18],[26],[28],[29]				11.75%
PIK Rate	[15],[18],[26],[29]				16.49%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[29]	3,502
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[18],[26],[29]				16.49%
Spread	[18],[26],[28],[29]				11.75%
PIK Rate	[15],[18],[26],[29]				16.49%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[29]	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	[11],[23],[29]	76
Investment, Identifier [Axis]: American Teleconferencing Services, Ltd., Secured Debt 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11],[23],[29]	374
Investment, Identifier [Axis]: Amounts related to investments transferred to or from other 1940 Act classification during the period
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				(1,354)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				(9,070)
Gross Additions				0
Gross Reductions				0
Ending balance				0
Investment, Identifier [Axis]: Amounts related to investments transferred to or from other 1940 Act classification during the period, 0.115, SF, 0.06, 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				1,354
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				9,070
Gross Additions				0
Gross Reductions				0
Ending balance				$ 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)		3,452
Amount of Unrealized Gain/(Loss)		(2,900)
Amount of Interest, Fees or Dividends Credited to Income		(17)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		(6,332)
Gross Additions		0
Gross Reductions		0
Ending balance		0
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Total Rate				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		0
Gross Additions				0
Gross Reductions				0
Ending balance		5,140		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
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)				690
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		4,860
Gross Additions				690
Gross Reductions				0
Ending balance		0		$ 5,550
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)		(160)
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		0
Gross Reductions		160
Ending balance		5,140
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				15.38%
Spread				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	[31]	219
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[30]	$ 219
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		17.50%		15.38%	13.75%
Spread				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		180		166
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,048		4,084
Gross Additions		3		17
Gross Reductions		50		70
Ending balance		4,001		4,031
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	[16]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[17]	0
Investment, Identifier [Axis]: Ansira Partners II, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.75%	[20],[25],[27],[30]		6.75%	[18],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	$ (187)
Ending balance	[20],[25],[30]	$ (177)
Investment, Identifier [Axis]: Ansira Partners II, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.07%	[20],[25]		11.25%	[18],[26]
Spread		6.75%	[20],[25],[27]		6.75%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 74,279
Ending balance	[20],[25]	74,373
Investment, Identifier [Axis]: ArborWorks, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	0
Ending balance	[20]	0
Investment, Identifier [Axis]: ArborWorks, LLC, Preferred Equity 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	12,552
Ending balance	[20]	13,838
Investment, Identifier [Axis]: ArborWorks, LLC, Preferred Equity 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	0
Ending balance	[20]	$ 0
Investment, Identifier [Axis]: ArborWorks, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.00%	[20]		15.00%	[18]
PIK Rate		15.00%	[13],[20]		15.00%	[15],[18]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	$ 1,997
Ending balance	[20]	$ 2,073
Investment, Identifier [Axis]: ArborWorks, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.92%	[20],[25]		11.08%	[18],[26]
Spread		6.50%	[20],[25],[27]		6.50%	[18],[26],[28]
PIK Rate		10.92%	[13],[20],[25]		11.08%	[15],[18],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 8,054
Ending balance	[20],[25]	8,276
Investment, Identifier [Axis]: Archer Systems, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	2,450
Ending balance	[20]	2,260
Investment, Identifier [Axis]: B-O-F Corporation, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20]	$ 249
Investment, Identifier [Axis]: B-O-F Corporation, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[20],[25]	10.08%
Spread	[20],[25],[27]	5.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 63
Investment, Identifier [Axis]: B-O-F Corporation, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[20],[25]	9.04%
Spread	[20],[25],[27]	4.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 4,075
Investment, Identifier [Axis]: B-O-F Corporation, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[20],[25]	11.04%
Spread	[20],[25],[27]	6.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 4,075
Investment, Identifier [Axis]: BDB 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		18,920
Gross Additions		0
Gross Reductions		0
Ending balance		$ 18,920
Investment, Identifier [Axis]: BDB Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		420
Gross Reductions		0
Ending balance		420
Investment, Identifier [Axis]: BP Loenbro Holdings Inc., Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	3,620
Ending balance	[20]	$ 4,510
Investment, Identifier [Axis]: BP Loenbro Holdings Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.17%	[20],[25]		10.68%	[18],[26],[34]
Spread		5.75%	[20],[25],[27]		6.25%	[18],[26],[28],[34]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[34]	$ 1,199
Ending balance	[20],[25]	$ 899
Investment, Identifier [Axis]: BP Loenbro Holdings Inc., Secured Debt 2
Schedule of Investments [Line Items]
Spread		5.75%	[20],[25],[27],[30]		6.25%	[18],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	$ (22)
Ending balance	[20],[25],[30]	$ (21)
Investment, Identifier [Axis]: BP Loenbro Holdings Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.14%	[20],[25]		10.92%	[18],[26]
Spread		5.75%	[20],[25],[27]		6.25%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 26,173
Ending balance	[20],[25]	$ 26,006
Investment, Identifier [Axis]: BP Loenbro Holdings Inc., Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[20],[25]	10.16%
Spread	[20],[25],[27]	5.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 9,530
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)		(100)		480
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	[18]	4,140
Gross Additions		0		480
Gross Reductions		100		0
Ending balance		$ 5,760	[20]	$ 4,620
Investment, Identifier [Axis]: Barfly Ventures, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		7.00%	[20]	7.00%	7.00%	[18]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		12		13
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		711	[18]	711
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		711	[20]	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)		0		0
Amount of Interest, Fees or Dividends Credited to Income		188		351
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,160	[19]	6,150
Gross Additions		0		0
Gross Reductions		0		1
Ending balance		$ 5,160	[21]	$ 6,149
Investment, Identifier [Axis]: Batjer TopCo, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.00%		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		10		6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		446		0
Gross Additions		0		450
Gross Reductions		270		0
Ending balance		$ 176		$ 450
Investment, Identifier [Axis]: Batjer TopCo, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.00%		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		7		7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		270		270
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 270		$ 270
Investment, Identifier [Axis]: Batjer TopCo, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.00%		10.00%	10.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		(5)
Amount of Interest, Fees or Dividends Credited to Income		279		273
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		10,529		10,575
Gross Additions		5		5
Gross Reductions		0		5
Ending balance		10,534		10,575
Investment, Identifier [Axis]: Berry Aviation, Inc., Preferred Member Units 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	0
Ending balance	[20]	0
Investment, Identifier [Axis]: Berry Aviation, Inc., Preferred Member Units 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[35]	0
Ending balance	[20],[36]	0
Investment, Identifier [Axis]: Berry Aviation, Inc., Preferred Member Units 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[35]	0
Ending balance	[20],[36]	$ 0
Investment, Identifier [Axis]: Bettercloud, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		10.25%	[14],[20],[25],[27],[30]		10.25%	[18],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	$ (48)
Ending balance	[14],[20],[25],[30]	$ (48)
Investment, Identifier [Axis]: Bettercloud, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.76%	[14],[20],[25]		15.76%	[18],[26]
Spread		10.25%	[14],[20],[25],[27]		10.25%	[18],[26],[28]
PIK Rate		9.25%	[13],[14],[20],[25]		9.25%	[15],[18],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 23,984
Ending balance	[14],[20],[25]	19,502
Investment, Identifier [Axis]: Binswanger Enterprises, LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	650
Ending balance	[20]	880
Investment, Identifier [Axis]: Bluestem Brands, Inc., Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11]	0
Ending balance	[12]	$ 0
Investment, Identifier [Axis]: Bluestem Brands, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.95%	[12],[14],[25]		13.17%	[11],[26]
Spread		8.50%	[12],[14],[25],[27]		8.50%	[11],[26],[28]
PIK Rate		11.95%	[12],[13],[14],[25]		12.17%	[11],[15],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11],[26]	$ 170
Ending balance	[12],[14],[25]	$ 130
Investment, Identifier [Axis]: Bluestem Brands, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.00%	[12],[14],[25]		15.00%	[11],[26]
Spread		7.50%	[12],[14],[25],[27]		7.50%	[11],[26],[28]
PIK Rate		14.75%	[12],[13],[14],[25]		14.75%	[11],[15],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11],[26]	$ 2,605
Ending balance	[12],[14],[25]	$ 2,425
Investment, Identifier [Axis]: Bluestem Brands, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.95%	[12],[14],[25]		13.17%	[11],[26]
Spread		8.50%	[12],[14],[25],[27]		8.50%	[11],[26],[28]
PIK Rate		11.95%	[12],[13],[14],[25]		12.17%	[11],[15],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11],[26]	$ 3,535
Ending balance	[12],[14],[25]	2,701
Investment, Identifier [Axis]: Bluestem Brands, Inc., Warrants
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11],[16]	0
Ending balance	[12],[17]	0
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)		810		(960)
Amount of Interest, Fees or Dividends Credited to Income		140		8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		310		1,990
Gross Additions		810		0
Gross Reductions		0		960
Ending balance		$ 1,120		$ 1,030
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		$ 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		266		320
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		266		$ 320
Investment, Identifier [Axis]: Boccella Precast Products LLC., Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[21]	$ 1,120
Investment, Identifier [Axis]: Boccella Precast Products LLC., Secured Debt
Schedule of Investments [Line Items]
Total Rate		10.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		$ 266
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Class B Preferred Member Units
Schedule of Investments [Line Items]
Total Rate		8.00%	[21]	8.00%	8.00%	[19]
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				1,990
Amount of Interest, Fees or Dividends Credited to Income				875
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 30,520	[19]	31,020
Gross Additions				1,990
Gross Reductions				0
Ending balance		$ 31,000	[21]	$ 33,010
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Class B Preferred Member Units 1.1
Schedule of Investments [Line Items]
Total Rate		8.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		480
Amount of Interest, Fees or Dividends Credited to Income		795
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		30,520
Gross Additions		480
Gross Reductions		0
Ending balance		31,000
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate				13.46%
Spread				8.09%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				10
Amount of Interest, Fees or Dividends Credited to Income				3,308
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[31]	96,556
Gross Additions				7,536
Gross Reductions				660
Ending balance				103,432
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[30]	$ 0
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		11.70%
Spread		7.33%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(35)
Amount of Interest, Fees or Dividends Credited to Income		2,987
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		101,643
Gross Additions		34
Gross Reductions		631
Ending balance		$ 101,046
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[25],[37]	11.70%
Spread	[25],[27],[37]	7.33%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[25],[37]	$ 101,046
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		40
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		0
Gross Reductions		0
Ending balance		0
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt, (9)
Schedule of Investments [Line Items]
Total Rate	[26],[38]				12.55%
Spread	[26],[28],[38]				7.99%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[26],[38]	101,643
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[39],[40]	0
Ending balance	[20],[41],[42]	0
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[39],[40]	500
Ending balance	[20],[41],[42]	$ 500
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.46%	[20],[25],[41],[42]		11.65%	[18],[26],[39],[40]
Spread		7.00%	[20],[25],[27],[41],[42]		7.00%	[18],[26],[28],[39],[40]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[39],[40]	$ 571
Ending balance	[20],[25],[41],[42]	$ 571
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.46%	[20],[25],[41],[42]		10.74%	[18],[26],[39],[40]
Spread		6.00%	[20],[25],[27],[41],[42]		6.00%	[18],[26],[28],[39],[40]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[39],[40]	$ 6,341
Ending balance	[20],[25],[41],[42]	$ 6,325
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.46%	[20],[25],[41],[42]		12.74%	[18],[26],[39],[40]
Spread		8.00%	[20],[25],[27],[41],[42]		8.00%	[18],[26],[28],[39],[40]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[39],[40]	$ 6,341
Ending balance	[20],[25],[41],[42]	$ 6,325
Investment, Identifier [Axis]: Brainworks Software, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.25%	[14],[20],[22],[25]		15.25%	[18],[23],[26],[29]
Spread		7.25%	[14],[20],[22],[25],[27]		7.25%	[18],[23],[26],[28],[29]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[23],[26],[29]	$ 761
Ending balance	[14],[20],[22],[25]	$ 761
Investment, Identifier [Axis]: Brainworks Software, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.25%	[14],[20],[22],[25]		15.25%	[18],[23],[26],[29]
Spread		7.25%	[14],[20],[22],[25],[27]		7.25%	[18],[23],[26],[28],[29]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[23],[26],[29]	$ 750
Ending balance	[14],[20],[22],[25]	591
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)		(570)		100
Amount of Interest, Fees or Dividends Credited to Income		30		30
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,680	[19]	5,620
Gross Additions		0		100
Gross Reductions		570		0
Ending balance		$ 4,110	[21]	$ 5,720
Investment, Identifier [Axis]: Brewer Crane Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		14.48%	[25]	15.48%	14.66%	[26]
Spread		10.00%	[25],[27]	10.00%	10.00%	[26],[28]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		181		210
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,016	[26]	5,498
Gross Additions		0		0
Gross Reductions		0		124
Ending balance		5,016	[25]	5,374
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		25
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[19],[35]	1,000
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		0	[21],[36]	$ 1,000
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				13.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				290
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
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				13.00%
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				1,000
Gross Additions				0
Gross Reductions				0
Ending balance				1,000
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Warrants
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[16]	0
Ending balance	[17]	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		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		1,808
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		0		1,808
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		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		2,482
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		0		$ 2,482
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	[39],[43],[44]	3,120
Ending balance	[41],[45],[46]	2,908
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	[19],[39],[43],[44]	4,016
Ending balance	[21],[41],[45],[46]	3,852
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	[19],[39],[43],[44]	3,809
Ending balance	[21],[41],[45],[46]	$ 4,309
Investment, Identifier [Axis]: Buca C, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Total Rate		6.00%		6.00%	6.00%
PIK Rate		6.00%	[13]	6.00%	6.00%	[15]
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		0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0		$ 0
Investment, Identifier [Axis]: Buca C, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate				12.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				563
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				12,144
Gross Additions				0
Gross Reductions				0
Ending balance				12,144
Investment, Identifier [Axis]: Buca C, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.00%			15.00%	[23],[29]
PIK Rate		15.00%			15.00%	[15],[23],[29]
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	[23],[29]	0
Gross Additions		0
Gross Reductions		0
Ending balance		$ 0
Investment, Identifier [Axis]: Buca C, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.00%			15.00%	[29]
PIK Rate		15.00%			15.00%	[15],[29]
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	[29]	0
Gross Additions		0
Gross Reductions		0
Ending balance		$ 0
Investment, Identifier [Axis]: Buca C, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		15.00%	[14],[22]		15.00%	[23],[29]
PIK Rate		15.00%	[13],[14],[22]		15.00%	[15],[23],[29]
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(368)
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[23],[29]	0
Gross Additions		368
Gross Reductions		368
Ending balance	[14],[22]	$ 0
Investment, Identifier [Axis]: Buca C, LLC., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[14],[22]	15.00%
PIK Rate	[13],[14],[22]	15.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[14],[22]	$ 0
Investment, Identifier [Axis]: Buca C, LLC., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[14]	15.00%
PIK Rate	[13],[14]	15.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[14]	$ 0
Investment, Identifier [Axis]: Burning Glass Intermediate Holding Company, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		5.00%	[20],[25],[27],[30]		5.00%	[18],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	$ 0
Ending balance	[20],[25],[30]	$ 0
Investment, Identifier [Axis]: Burning Glass Intermediate Holding Company, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		9.45%	[20],[25]		9.46%	[18],[26]
Spread		5.00%	[20],[25],[27]		5.00%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 17,915
Ending balance	[20],[25]	16,956
Investment, Identifier [Axis]: CAI Software LLC, Preferred Equity 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,417
Ending balance		2,800
Investment, Identifier [Axis]: CAI Software LLC, Preferred Equity 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Ending balance		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)		0		0
Amount of Interest, Fees or Dividends Credited to Income		824		824
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		49,540	[19]	50,130
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 49,540	[21]	50,130
Investment, Identifier [Axis]: CQ Fluency, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.75%	[20],[25],[27],[30]		6.75%	[18],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	$ (47)
Ending balance	[20],[25],[30]	$ (42)
Investment, Identifier [Axis]: CQ Fluency, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Spread		6.75%	[20],[25],[27],[30]		6.75%	[18],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	$ (47)
Ending balance	[20],[25],[30]	$ (42)
Investment, Identifier [Axis]: CQ Fluency, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.15%	[20],[25]		11.18%	[18],[26]
Spread		6.75%	[20],[25],[27]		6.75%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 10,754
Ending balance	[20],[25]	10,525
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)		(100)		(71)
Amount of Interest, Fees or Dividends Credited to Income		0		9
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,200	[19]	1,980
Gross Additions		0		0
Gross Reductions		100		71
Ending balance		$ 1,100	[21]	1,909
Investment, Identifier [Axis]: California Splendor Holdings LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Total Rate		15.00%	[21]		15.00%	[19]
PIK Rate		15.00%	[13],[21]		15.00%	[15],[19]
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		$ 10,909	[19]	15,695
Gross Additions				0
Gross Reductions				0
Ending balance		11,318	[21]	$ 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)		0
Amount of Interest, Fees or Dividends Credited to Income		63
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		22,215
Gross Additions		0
Gross Reductions		0
Ending balance		22,215
Investment, Identifier [Axis]: California Splendor Holdings LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Total Rate				15.00%
PIK Rate				15.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				208
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		22,215	[19]	4,601
Gross Additions				5,208
Gross Reductions				0
Ending balance		$ 22,215	[21]	$ 9,809
Investment, Identifier [Axis]: California Splendor Holdings LLC, Preferred Member Units 2.1
Schedule of Investments [Line Items]
Total Rate		15.00%
PIK Rate		15.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		409
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		10,909
Gross Additions		409
Gross Reductions		0
Ending balance		$ 11,318
Investment, Identifier [Axis]: California Splendor Holdings LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate				14.00%
PIK Rate				4.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(79)
Amount of Interest, Fees or Dividends Credited to Income				1,088
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				27,655
Gross Additions				6
Gross Reductions				78
Ending balance				27,583
Investment, Identifier [Axis]: California Splendor Holdings LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate					14.00%
PIK Rate		4.00%	[13],[30]		4.00%	[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 1,506
Ending balance	[30]	$ (19)
Investment, Identifier [Axis]: California Splendor Holdings LLC, Secured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		14.00%
PIK Rate		4.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		388
Amount of Interest, Fees or Dividends Credited to Income		984
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		28,465
Gross Additions		582
Gross Reductions		1,092
Ending balance		$ 27,955
Investment, Identifier [Axis]: California Splendor Holdings LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.00%			14.00%
PIK Rate		4.00%	[13]		4.00%	[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 28,465
Ending balance		$ 27,955
Investment, Identifier [Axis]: California Splendor Holdings LLC, Secured Debt 2.1
Schedule of Investments [Line Items]
PIK Rate		4.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		40
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,506
Gross Additions		14
Gross Reductions		1,539
Ending balance		(19)
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)		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		4,740		4,500
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 4,740		$ 4,500
Investment, Identifier [Axis]: Career Team Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.38%	[25]	11.38%	10.56%	[26]
Spread		6.00%	[25],[27]	6.00%	6.00%	[26],[28]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		42		34
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		887	[26]	881
Gross Additions		902		902
Gross Reductions		0		1,801
Ending balance		$ 1,789	[25]	$ (18)
Investment, Identifier [Axis]: Career Team Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		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		617		668
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		19,364		19,906
Gross Additions		11		11
Gross Reductions		203		180
Ending balance		19,172		$ 19,737
Investment, Identifier [Axis]: CaseWorthy, Inc., Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	490
Ending balance	[20]	569
Investment, Identifier [Axis]: CenterPeak Holdings, LLC, Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19]	14,550
Ending balance	[21]	16,030
Investment, Identifier [Axis]: CenterPeak Holdings, LLC, Secured Debt 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[31]	0
Ending balance	[30]	$ 0
Investment, Identifier [Axis]: CenterPeak Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.00%			15.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 21,507
Ending balance		21,507
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				14.48%
Spread				9.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				257
Amount of Interest, Fees or Dividends Credited to Income				522
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				0
Gross Additions				21,974
Gross Reductions				0
Ending balance				21,974
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)		1,870		1,109
Amount of Interest, Fees or Dividends Credited to Income		30		30
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		12,410		11,040
Gross Additions		1,870		1,109
Gross Reductions		0		0
Ending balance		$ 14,280		$ 12,149
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				14.48%
Spread		10.00%	[25],[27],[30]	9.00%	9.00%	[26],[28],[31]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		3		3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[26],[31]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[25],[30]	$ 0
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.48%	[25]		13.66%	[26]
Spread		10.00%	[25],[27]		9.00%	[26],[28]
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(5)
Amount of Interest, Fees or Dividends Credited to Income		876
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[26]	25,534
Gross Additions		5
Gross Reductions		1,075
Ending balance	[25]	24,464
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate				14.48%
Spread				9.00%
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
Investment, Identifier [Axis]: Chamberlin Holding LLC, Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		1,130		250
Amount of Interest, Fees or Dividends Credited to Income		2,791		1,464
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		33,110		29,320
Gross Additions		1,130		250
Gross Reductions		0		0
Ending balance		34,240		29,570
Investment, Identifier [Axis]: Chamberlin Holding LLC, , Member Units 2
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				23
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				2,860
Gross Additions				140
Gross Reductions				0
Ending balance				$ 3,000
Investment, Identifier [Axis]: Chamberlin Holding LLC, Member Units 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19]	33,110
Ending balance	[21]	34,240
Investment, Identifier [Axis]: Chamberlin Holding LLC, Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		80
Amount of Interest, Fees or Dividends Credited to Income		23
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19],[35]	3,550
Gross Additions		80
Gross Reductions		0
Ending balance	[21],[36]	$ 3,630
Investment, Identifier [Axis]: Chamberlin Holding LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				11.49%
Spread		6.00%	[25],[27],[30]	6.00%	6.00%	[26],[28],[31]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(22)		(22)
Amount of Interest, Fees or Dividends Credited to Income		24		25
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[26],[31]	0
Gross Additions		22		22
Gross Reductions		22		22
Ending balance		$ 0	[25],[30]	$ 0
Investment, Identifier [Axis]: Chamberlin Holding LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.49%	[25]	13.49%	12.74%	[26]
Spread		8.00%	[25],[27]	8.00%	8.00%	[26],[28]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		3		0
Amount of Interest, Fees or Dividends Credited to Income		503		533
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		15,620	[26]	15,620
Gross Additions		1,600		0
Gross Reductions		0		0
Ending balance		$ 17,220	[25]	$ 15,620
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.56%	[20],[24],[25]		11.53%	[18],[26],[34]
Spread		7.00%	[20],[24],[25],[27]		7.00%	[18],[26],[28],[34]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[34]	$ 4,830
Ending balance	[20],[24],[25]	$ 6,084
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.55%	[20],[25]		11.93%	[18],[26]
Spread		7.00%	[20],[25],[27]		7.00%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 34,431
Ending balance	[20],[25]	$ 35,311
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.55%	[20],[25]		11.93%	[18],[26]
Spread		7.00%	[20],[25],[27]		7.00%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 1,908
Ending balance	[20],[25]	$ 1,956
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		11.55%	[20],[25]		11.93%	[18],[26]
Spread		7.00%	[20],[25],[27]		7.00%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 4,610
Ending balance	[20],[25]	4,728
Investment, Identifier [Axis]: Charps, LLC, 0.1, SF, Preferred 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		329
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		15,580
Gross Additions		0
Gross Reductions		0
Ending balance		$ 15,580
Investment, Identifier [Axis]: Charps, LLC, 0.1, SF, Unsecured Debt
Schedule of Investments [Line Items]
Total Rate		10.00%		10.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(23)		(122)
Amount of Interest, Fees or Dividends Credited to Income		219		264
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,694		5,694
Gross Additions		23		122
Gross Reductions		23		122
Ending balance		5,694		5,694
Investment, Identifier [Axis]: Charps, LLC, Preferred Member Units
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		15,580	[19]	15,690
Gross Additions				350
Gross Reductions				0
Ending balance		$ 15,580	[21]	16,040
Investment, Identifier [Axis]: Charps, LLC, Unsecured Debt
Schedule of Investments [Line Items]
Total Rate		14.00%			10.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 5,694
Ending balance		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)		50		(1,140)
Amount of Interest, Fees or Dividends Credited to Income		443		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		10,990	[19]	5,200
Gross Additions		50		0
Gross Reductions		0		1,140
Ending balance		11,040	[21]	4,060
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	[35]	1,129
Gross Additions		320		0
Gross Reductions		0		179
Ending balance		1,270	[36]	$ 950
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				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		1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[31]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[30]	$ 0
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		9.00%		12.00%	9.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		2		0
Amount of Interest, Fees or Dividends Credited to Income		159		261
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		6,760		8,422
Gross Additions		0		0
Gross Reductions		240		12
Ending balance		$ 6,520		$ 8,410
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 3
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		0
Amount of Interest, Fees or Dividends Credited to Income		24		25
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		973		1,004
Gross Additions		0		0
Gross Reductions		11		9
Ending balance		962		995
Investment, Identifier [Axis]: Clarius BIGS, LLC, Secured Debt
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[23],[29]	19
Ending balance	[14],[20],[22]	16
Investment, Identifier [Axis]: Classic H&G Holdings, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		(210)		1,470
Amount of Interest, Fees or Dividends Credited to Income		0		312
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,850	[19]	16,000
Gross Additions		0		1,470
Gross Reductions		210		0
Ending balance		2,640	[21]	$ 17,470
Investment, Identifier [Axis]: Classic H&G Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				11.63%
Spread				6.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				134
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				4,560
Gross Additions				0
Gross Reductions				800
Ending balance				$ 3,760
Investment, Identifier [Axis]: Classic H&G Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				8.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(11)
Amount of Interest, Fees or Dividends Credited to Income				400
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				19,274
Gross Additions				11
Gross Reductions				11
Ending balance				19,274
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)		1,690		1,730
Amount of Interest, Fees or Dividends Credited to Income		1,284		612
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		67,810	[19],[35]	72,470
Gross Additions		1,690		1,730
Gross Reductions		0		0
Ending balance		69,500	[21],[36]	$ 74,200
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				12.50%
Amount of Realized Gain/(Loss)		0		$ 0
Amount of Unrealized Gain/(Loss)		(2)		6
Amount of Interest, Fees or Dividends Credited to Income		7		24
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[31]	0
Gross Additions		2		1,264
Gross Reductions		2		1,264
Ending balance		$ 0	[30]	$ 0
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%		12.50%	12.50%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(3)		(3)
Amount of Interest, Fees or Dividends Credited to Income		1,201		1,312
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		39,227		42,073
Gross Additions		3		3
Gross Reductions		1,515		639
Ending balance		37,715		41,437
Investment, Identifier [Axis]: Colonial Electric Company LLC, Preferred Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19]	13,570
Ending balance	[21]	14,330
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)				0
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				2,400
Gross Additions				0
Gross Reductions				0
Ending balance				2,400
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)				650
Amount of Interest, Fees or Dividends Credited to Income				94
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				7,680
Gross Additions				650
Gross Reductions				0
Ending balance				$ 8,330
Investment, Identifier [Axis]: Colonial Electric Company LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				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		2		2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[31]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[30]	$ 0
Investment, Identifier [Axis]: Colonial Electric Company LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%	12.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(8)		319
Amount of Interest, Fees or Dividends Credited to Income		428		662
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		14,310		21,627
Gross Additions		8		339
Gross Reductions		323		1,995
Ending balance		13,995		19,971
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)		760
Amount of Interest, Fees or Dividends Credited to Income		414
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		13,570
Gross Additions		760
Gross Reductions		0
Ending balance		14,330
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)		(650)		(430)
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		14,450
Gross Additions		0		0
Gross Reductions		650		430
Ending balance		$ 10,610		$ 14,020
Investment, Identifier [Axis]: CompareNetworks Topco, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.48%	[25]		13.66%	[26]
Spread		9.00%	[25],[27]		9.00%	[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[26]	$ 2,903
Ending balance	[25]	$ 2,700
Investment, Identifier [Axis]: CompareNetworks Topco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				14.48%
Spread				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
Investment, Identifier [Axis]: CompareNetworks Topco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.48%		14.48%
Spread		9.00%		9.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		69
Amount of Interest, Fees or Dividends Credited to Income		107		127
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,903		3,454
Gross Additions		7		0
Gross Reductions		210		292
Ending balance		2,700		3,162
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		0
Amount of Interest, Fees or Dividends Credited to Income		60		60
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		7,450		7,454
Gross Additions		4		0
Gross Reductions		0		0
Ending balance		7,454		$ 7,454
Investment, Identifier [Axis]: Compass Systems & Sales, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				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		1		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		(21)	[31]	0
Gross Additions		2		0
Gross Reductions		0		0
Ending balance		$ (19)	[30]	$ 0
Investment, Identifier [Axis]: Compass Systems & Sales, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		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		589		595
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		17,067		17,034
Gross Additions		9		8
Gross Reductions		0		0
Ending balance		$ 17,076		17,042
Investment, Identifier [Axis]: Computer Data Source, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.70%	[20],[24],[25]		12.93%	[18],[26],[34]
Spread		8.25%	[20],[24],[25],[27]		8.25%	[18],[26],[28],[34]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[34]	$ 7,341
Ending balance	[20],[24],[25]	$ 7,409
Investment, Identifier [Axis]: Computer Data Source, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[20],[25]	12.70%
Spread		8.25%	[20],[25],[27]		8.25%	[18],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	$ (113)
Ending balance	[20],[25]	18,011
Investment, Identifier [Axis]: Computer Data Source, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[18],[26]				12.92%
Spread	[18],[26],[28]				8.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	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)		0
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19],[39],[43],[44]	2,276
Gross Additions		0
Gross Reductions		0
Ending balance		2,276
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	[21],[41],[45],[46]	2,276
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				74
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				4,352
Gross Additions				0
Gross Reductions				530
Ending balance				3,822
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	[39]	12,596
Gross Additions		0
Gross Reductions		0
Ending balance	[41]	$ 12,596
Investment, Identifier [Axis]: Connect Telecommunications Solutions Holdings, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.00%			13.00%	[39]
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		910
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[39]	27,315
Gross Additions		14
Gross Reductions		0
Ending balance		$ 27,329
Investment, Identifier [Axis]: Connect Telecommunications Solutions Holdings, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate	[41]	13.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[41]	$ 27,329
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	[39],[43],[44]	568
Gross Additions		15		0
Gross Reductions		0		0
Ending balance		$ 515	[41],[45],[46]	568
Investment, Identifier [Axis]: Coregistics Buyer LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.31%	[20],[24],[25],[41],[42]		10.39%	[18],[26],[34],[39],[40]
Spread		6.00%	[20],[24],[25],[27],[41],[42]		6.00%	[18],[26],[28],[34],[39],[40]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[34],[39],[40]	$ 1,639
Ending balance	[20],[24],[25],[41],[42]	$ 1,669
Investment, Identifier [Axis]: Coregistics Buyer LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.32%	[20],[25],[41],[42]		10.36%	[18],[26],[39],[40]
Spread		6.00%	[20],[25],[27],[41],[42]		6.00%	[18],[26],[28],[39],[40]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[39],[40]	$ 10,507
Ending balance	[20],[25],[41],[42]	$ 10,650
Investment, Identifier [Axis]: Coregistics Buyer LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.31%	[20],[25],[41],[42]		10.40%	[18],[26],[39],[40]
Spread		6.00%	[20],[25],[27],[41],[42]		6.00%	[18],[26],[28],[39],[40]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[39],[40]	$ 6,987
Ending balance	[20],[25],[41],[42]	$ 7,100
Investment, Identifier [Axis]: Coregistics Buyer LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		10.57%	[20],[25],[41],[42]		10.61%	[18],[26],[39],[40]
Spread		6.25%	[20],[25],[27],[41],[42]		6.25%	[18],[26],[28],[39],[40]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[39],[40]	$ 30,165
Ending balance	[20],[25],[41],[42]	30,493
Investment, Identifier [Axis]: Creative Foam Corporation, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20]	$ 1,085
Investment, Identifier [Axis]: Creative Foam Corporation, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.25%	[20],[25],[27],[30]		5.75%	[18],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	$ (272)
Ending balance	[20],[25],[30]	$ (257)
Investment, Identifier [Axis]: Creative Foam Corporation, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.55%	[20],[25]		10.11%	[18],[26]
Spread		6.25%	[20],[25],[27]		5.75%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 105,229
Ending balance	[20],[25]	$ 105,607
Investment, Identifier [Axis]: Creative Foam Corporation, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[20],[25]	10.57%
Spread	[20],[25],[27]	6.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 9,605
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)		(5,980)		1,020
Amount of Interest, Fees or Dividends Credited to Income		63		896
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		15,000	[19]	15,000
Gross Additions		0		1,020
Gross Reductions		5,980		0
Ending balance		9,020	[21]	$ 16,020
Investment, Identifier [Axis]: Cybermedia Technologies, 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		3		3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[31]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[30]	$ 0
Investment, Identifier [Axis]: Cybermedia Technologies, LLC, Secured Debt 2
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)		(509)		0
Amount of Interest, Fees or Dividends Credited to Income		901		946
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		27,116		28,389
Gross Additions		15		17
Gross Reductions		509		362
Ending balance		26,622		28,044
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)		0
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,944
Gross Additions		0
Gross Reductions		0
Ending balance		$ 5,944
Investment, Identifier [Axis]: DMA Industries, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%
Investment, Identifier [Axis]: DMA Industries, 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		17
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		555
Gross Additions		0
Gross Reductions		0
Ending balance		555
Investment, Identifier [Axis]: DMA Industries, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				0
Amount of Unrealized Gain/(Loss)				(1,720)
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				0
Gross Reductions				1,720
Ending balance				$ 5,940
Investment, Identifier [Axis]: DMA Industries, LLC, Preferred Equity 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,944
Ending balance		$ 5,944
Investment, Identifier [Axis]: DMA Industries, LLC, Preferred Equity 2
Schedule of Investments [Line Items]
Total Rate		15.00%	[21]		15.00%	[19]
PIK Rate		15.00%	[13],[21]		15.00%	[15],[19]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19]	$ 3,240
Ending balance	[21]	3,360
Investment, Identifier [Axis]: DMA Industries, LLC, Preferred Equity 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		120
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,240
Gross Additions		120
Gross Reductions		0
Ending balance		$ 3,360
Investment, Identifier [Axis]: DMA Industries, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate				12.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(10)
Amount of Interest, Fees or Dividends Credited to Income				580
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				18,800
Gross Additions				10
Gross Reductions				10
Ending balance				18,800
Investment, Identifier [Axis]: DMA Industries, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.00%			12.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 555
Ending balance		555
Investment, Identifier [Axis]: DMA Industries, LLC, Secured Debt 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		508
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		16,722
Gross Additions		4
Gross Reductions		0
Ending balance		$ 16,726
Investment, Identifier [Axis]: DMA Industries, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%			12.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 16,722
Ending balance		$ 16,726
Investment, Identifier [Axis]: DTE Enterprises, LLC, Class A Preferred Member Units
Schedule of Investments [Line Items]
Total Rate		8.00%	[20]		8.00%	[18]
PIK Rate		8.00%	[13],[20]		8.00%	[15],[18]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	$ 0
Ending balance	[20]	$ 0
Investment, Identifier [Axis]: DTE Enterprises, LLC, Class AA Preferred Member Units (non-voting)
Schedule of Investments [Line Items]
Total Rate		10.00%	[20]		10.00%	[18],[19]
PIK Rate		10.00%	[13],[20]		10.00%	[15],[18],[19]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[19]	$ 438
Ending balance	[20]	0
Investment, Identifier [Axis]: Dalton US Inc., Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	690
Ending balance	[20]	780
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		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		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)		0		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		240		70
Gross Additions		0		80
Gross Reductions		0		0
Ending balance		$ 240		$ 150
Investment, Identifier [Axis]: Datacom, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		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		17		6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		493		447
Gross Additions		586		225
Gross Reductions		135		180
Ending balance		$ 944		$ 492
Investment, Identifier [Axis]: Datacom, LLC, Secured Debt 2
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		235		247
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		7,947		7,587
Gross Additions		35		37
Gross Reductions		68		67
Ending balance		7,914		7,557
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		50		50
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		9,835	[19]	9,835
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 9,835	[21]	$ 9,835
Investment, Identifier [Axis]: Digital Products Holdings LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		14.38%	[25]	15.38%	14.56%	[26]
Spread		10.00%	[25],[27]	10.00%	10.00%	[26],[28]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		453		583
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		12,422	[26]	14,690
Gross Additions		12		22
Gross Reductions		330		1,452
Ending balance		12,104	[25]	13,260
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		(500)
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		20,740
Gross Additions		540		0
Gross Reductions		0		500
Ending balance		18,470		$ 20,240
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				14.00%
Amount of Realized Gain/(Loss)		0		$ 0
Amount of Unrealized Gain/(Loss)		(7)		(7)
Amount of Interest, Fees or Dividends Credited to Income		11		37
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[31]	1,233
Gross Additions		7		1,282
Gross Reductions		7		2,515
Ending balance		$ 0	[30]	$ 0
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.00%		14.00%	14.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(10)		(11)
Amount of Interest, Fees or Dividends Credited to Income		837		906
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		23,902		25,543
Gross Additions		10		11
Gross Reductions		420		421
Ending balance		23,492		25,133
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)		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		2,447	[39],[43],[44]	2,631
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		2,447	[41],[45],[46]	2,631
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)		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		7,708	[39],[43],[44]	8,443
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		7,708	[41],[45],[46]	8,443
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		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	[18],[35]	1,580
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[20],[36]	1,580
Investment, Identifier [Axis]: Dreyfus Government Cash Management
Schedule of Investments [Line Items]
Total Rate		4.22%			4.43%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[47]	$ 3,400
Ending balance	[48]	39,900
Investment, Identifier [Axis]: Dynamic Communities, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	0
Ending balance	[20]	0
Investment, Identifier [Axis]: Dynamic Communities, LLC, Preferred Equity 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	60
Ending balance	[20]	110
Investment, Identifier [Axis]: Dynamic Communities, LLC, Preferred Equity 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	0
Ending balance	[20]	$ 0
Investment, Identifier [Axis]: Dynamic Communities, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.92%	[20],[25]		11.46%	[18],[26]
Spread		7.50%	[20],[25],[27]		7.00%	[18],[26],[28]
PIK Rate		11.92%	[13],[20],[25]		11.46%	[15],[18],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 2,220
Ending balance	[20],[25]	$ 2,286
Investment, Identifier [Axis]: Dynamic Communities, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.92%	[20],[25]		13.46%	[18],[26]
Spread		9.50%	[20],[25],[27]		9.00%	[18],[26],[28]
PIK Rate		13.92%	[13],[20],[25]		13.46%	[15],[18],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 2,219
Ending balance	[20],[25]	2,300
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		9		20
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		369	[19],[39],[44]	760
Gross Additions		0		1
Gross Reductions		0		0
Ending balance		369	[21],[41],[46]	761
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[18],[26]				12.74%
Spread	[18],[26],[28]				8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	2,714
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[18],[26]				12.74%
Spread	[18],[26],[28]				8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	4,201
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[18],[26]				12.74%
Spread	[18],[26],[28]				8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	8,380
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[18],[26]				12.74%
Spread	[18],[26],[28]				8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	1,738
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 5
Schedule of Investments [Line Items]
Total Rate	[18],[26]				12.74%
Spread	[18],[26],[28]				8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	9,509
Investment, Identifier [Axis]: Electro Technical Industries, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20]	$ 1,464
Investment, Identifier [Axis]: Electro Technical Industries, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread	[20],[25],[27],[30]	6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25],[30]	$ (190)
Investment, Identifier [Axis]: Electro Technical Industries, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[20],[25]	10.30%
Spread	[20],[25],[27]	6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 54,357
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Common 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				1,670
Gross Additions				0
Gross Reductions				0
Ending balance				1,670
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)		(690)		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		5,730		6,090
Gross Additions		0		0
Gross Reductions		690		0
Ending balance		5,040		$ 6,090
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Common Stock 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		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[35]	3,050
Gross Additions		50
Gross Reductions		0
Ending balance	[36]	$ 3,100
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				11.38%
Spread		6.00%	[25],[27],[30]	6.00%	6.00%	[26],[28],[31]
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		(5)	[26],[31]	(7)
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ (5)	[25],[30]	$ (7)
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		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		551		569
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		17,969		18,632
Gross Additions		9		13
Gross Reductions		70		470
Ending balance		$ 17,908		$ 18,175
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		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		141		143
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		6,207		6,252
Gross Additions		1		1
Gross Reductions		13		12
Ending balance		$ 6,195		6,241
Investment, Identifier [Axis]: Emerald Technologies Acquisition Co, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate		10.67%	[12],[25]		10.71%	[11],[26]
Spread		6.25%	[12],[25],[27]		6.25%	[11],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11],[26]	$ 7,670
Ending balance	[12],[25]	7,142
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	[19],[39],[43],[44]	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	[19],[39],[43],[44]	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	[19],[39],[43],[44]	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	[19],[39],[43],[44]	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	[19],[39],[43],[44]	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	[19],[39],[43],[44]	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	[19],[39],[43],[44]	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	[21],[41],[45],[46]	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	[21],[41],[45],[46]	959
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	[21],[41],[45],[46]	1,943
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	[21],[41],[45],[46]	4,840
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	[21],[41],[45],[46]	4,081
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	[21],[41],[45],[46]	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	[21],[41],[45],[46]	2,815
Investment, Identifier [Axis]: Escalent, Inc., Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[19]	910
Ending balance	[20],[21]	$ 910
Investment, Identifier [Axis]: Escalent, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		8.00%	[20],[25],[27],[30]		8.00%	[18],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	$ (28)
Ending balance	[20],[25],[30]	$ (27)
Investment, Identifier [Axis]: Escalent, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.40%	[20],[25]		12.39%	[18],[26]
Spread		8.00%	[20],[25],[27]		8.00%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 1,359
Ending balance	[20],[25]	$ 1,378
Investment, Identifier [Axis]: Escalent, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.40%	[20],[25]		12.43%	[18],[26]
Spread		8.00%	[20],[25],[27]		8.00%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 26,048
Ending balance	[20],[25]	25,981
Investment, Identifier [Axis]: Event Holdco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[18],[26]				12.59%
Spread	[18],[26],[28]				8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	3,692
Investment, Identifier [Axis]: Event Holdco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[18],[26]				12.59%
Spread	[18],[26],[28]				8.00%
PIK Rate	[15],[18],[26]				6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 47,633
Investment, Identifier [Axis]: Event Holdco, LLC., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[20],[25]	12.56%
Spread	[20],[25],[27]	8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 3,692
Investment, Identifier [Axis]: Event Holdco, LLC., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[20],[25]	12.56%
Spread	[20],[25],[27]	8.00%
PIK Rate	[13],[20],[25]	4.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 47,933
Investment, Identifier [Axis]: FCC Intermediate Holdco, 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)		3,438
Amount of Interest, Fees or Dividends Credited to Income		1,305
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		29,109
Gross Additions		3,691
Gross Reductions		410
Ending balance		$ 32,390
Investment, Identifier [Axis]: FCC Intermediate Holdco, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		$ 32,390
Investment, Identifier [Axis]: FCC Intermediate Holdco, LLC, Warrants
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		3,790
Amount of Interest, Fees or Dividends Credited to Income		390
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[16]	10,840
Gross Additions		3,790
Gross Reductions		0
Ending balance	[17],[21]	$ 14,630
Investment, Identifier [Axis]: Fidelity Government Fund
Schedule of Investments [Line Items]
Total Rate		3.98%
Investment, Identifier [Axis]: Fidelity Government Fund
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[34]	$ 1,526
Ending balance	[49]	$ 4,116
Investment, Identifier [Axis]: Fidelity Treasury
Schedule of Investments [Line Items]
Total Rate		3.96%			4.10%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[50]	$ 1,548
Ending balance	[51]	1,767
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)		3,450		0
Amount of Interest, Fees or Dividends Credited to Income		2,296		680
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		35,920	[19]	27,900
Gross Additions		3,450		0
Gross Reductions		0		0
Ending balance		39,370	[21]	27,900
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	[39],[43],[44]	2,190
Ending balance	[41],[45],[46]	2,190
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	[19],[39],[43],[44]	1,263
Ending balance	[21],[41],[45],[46]	298
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)		0		(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		0		77
Ending balance		2,190		2,935
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)		0		0
Amount of Interest, Fees or Dividends Credited to Income		0		138
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,263		3,704
Gross Additions		0		1
Gross Reductions		965		0
Ending balance		298		3,705
Investment, Identifier [Axis]: Fuse, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11]	0
Investment, Identifier [Axis]: Fuse, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[11],[19]				12.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11],[19]	932
Investment, Identifier [Axis]: Fuse, LLC., Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[12],[21]	$ 0
Investment, Identifier [Axis]: Fuse, LLC., Secured Debt
Schedule of Investments [Line Items]
Total Rate	[12]	12.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[12]	$ 862
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)		(930)		(1,650)
Amount of Interest, Fees or Dividends Credited to Income		437		654
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		10,540	[19]	11,460
Gross Additions		0		0
Gross Reductions		930		1,650
Ending balance		$ 9,610	[21]	$ 9,810
Investment, Identifier [Axis]: GFG Group, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		8.00%		8.00%	8.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(4)		(5)
Amount of Interest, Fees or Dividends Credited to Income		168		194
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		8,185		9,345
Gross Additions		4		5
Gross Reductions		4		5
Ending balance		8,185		9,345
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)		0		0
Amount of Interest, Fees or Dividends Credited to Income		1,506		42
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		45,890		44,440
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 45,890		$ 44,440
Investment, Identifier [Axis]: GRT Rubber Technologies LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.48%		11.48%	10.66%
Spread		6.00%	[27]	6.00%	6.00%	[28]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(1)		0
Amount of Interest, Fees or Dividends Credited to Income		83		70
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,146		2,400
Gross Additions		1		0
Gross Reductions		1		0
Ending balance		$ 3,146		$ 2,400
Investment, Identifier [Axis]: GRT Rubber Technologies LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.48%		13.48%	12.66%
Spread		8.00%	[27]	8.00%	8.00%	[28]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(12)		(12)
Amount of Interest, Fees or Dividends Credited to Income		1,273		1,391
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		40,493		40,493
Gross Additions		12		12
Gross Reductions		12		12
Ending balance		40,493		40,493
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[18],[26],[34]				11.12%
Spread	[18],[26],[28],[34]				6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[34]	1,864
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[18],[26]				11.24%
Spread	[18],[26],[28]				6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	10,509
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[18],[26]				11.24%
Spread	[18],[26],[28]				6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	942
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[18],[26]				11.24%
Spread	[18],[26],[28]				6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	225
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC, Secured Debt 5
Schedule of Investments [Line Items]
Total Rate	[18],[26]				10.98%
Spread	[18],[26],[28]				6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 6,076
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[20],[24],[25]	10.95%
Spread	[20],[24],[25],[27]	6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[24],[25]	$ 1,386
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[20],[25]	10.95%
Spread	[20],[25],[27]	6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 10,475
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[20],[25]	10.95%
Spread	[20],[25],[27]	6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 939
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC., Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[20],[25]	10.95%
Spread	[20],[25],[27]	6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 224
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC., Secured Debt 5
Schedule of Investments [Line Items]
Total Rate	[20],[25]	10.95%
Spread	[20],[25],[27]	6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 6,057
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[18],[26],[34]				10.50%
Spread	[18],[26],[28],[34]				6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[34]	662
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[18],[26]				10.55%
Spread	[18],[26],[28]				6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	279
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[18],[26]				10.46%
Spread	[18],[26],[28]				6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 3,350
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[20],[25]	11.42%
Spread	[20],[25],[27]	7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 642
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[20],[25]	11.42%
Spread	[20],[25],[27]	7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 270
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[20],[25]	11.42%
Spread	[20],[25],[27]	7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 3,240
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		1,903
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19]	114,750
Gross Additions		0
Gross Reductions		0
Ending balance		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				1,493
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	[21]	$ 106,550
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, SF, Secured Debt
Schedule of Investments [Line Items]
Spread		7.50%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		0
Gross Reductions		0
Ending balance		$ 0
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.50%
Spread		7.50%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(12)
Amount of Interest, Fees or Dividends Credited to Income		2,114
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		73,126
Gross Additions		12
Gross Reductions		12
Ending balance		$ 73,126
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				10.00%
Spread		7.50%	[25],[27],[30],[52]	7.00%	7.00%	[26],[28],[31],[53]
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 0	[26],[31],[53]	0
Gross Additions				0
Gross Reductions				0
Ending balance		$ 0	[25],[30],[52]	$ 0
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.50%	[25],[52]	10.00%	11.00%	[26],[53]
Spread		7.50%	[25],[27],[52]	7.00%	7.00%	[26],[28],[53]
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(24)
Amount of Interest, Fees or Dividends Credited to Income				1,368
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 73,126	[26],[53]	54,078
Gross Additions				24
Gross Reductions				1,624
Ending balance		73,126	[25],[52]	52,478
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		19
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
Investment, Identifier [Axis]: Garreco, LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19]	2,060
Ending balance	[21]	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				28
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				1,580
Gross Additions				0
Gross Reductions				0
Ending balance				$ 1,580
Investment, Identifier [Axis]: Garreco, LLC,, Secured Debt
Schedule of Investments [Line Items]
Total Rate				9.50%
Spread				8.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				74
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				3,088
Gross Additions				0
Gross Reductions				0
Ending balance				3,088
Investment, Identifier [Axis]: Garyline, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	500
Investment, Identifier [Axis]: Garyline, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[18],[26],[34]				11.29%
Spread	[18],[26],[28],[34]				6.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[34]	8,118
Investment, Identifier [Axis]: Garyline, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[18],[26]				11.34%
Spread	[18],[26],[28]				6.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	32,146
Investment, Identifier [Axis]: Garyline, LLC., Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20]	500
Investment, Identifier [Axis]: Garyline, LLC., Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20]	$ 55
Investment, Identifier [Axis]: Garyline, LLC., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[20],[24],[25]	11.16%
Spread	[20],[24],[25],[27]	6.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[24],[25]	$ 8,824
Investment, Identifier [Axis]: Garyline, LLC., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[20],[25]	11.17%
Spread	[20],[25],[27]	6.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 32,065
Investment, Identifier [Axis]: GradeEight Corp., Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	1,365
Ending balance	[20]	$ 1,365
Investment, Identifier [Axis]: GradeEight Corp., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[20],[25]	13.75%
Spread		6.25%	[20],[25],[27]		7.25%	[18],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	$ (95)
Ending balance	[20],[25]	$ 1,125
Investment, Identifier [Axis]: GradeEight Corp., Secured Debt 2
Schedule of Investments [Line Items]
Spread		7.25%	[20],[25],[27],[30]		7.25%	[18],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	$ (48)
Ending balance	[20],[25],[30]	$ (45)
Investment, Identifier [Axis]: GradeEight Corp., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.57%	[20],[25],[54]		11.74%	[18],[26],[55]
Spread		7.25%	[20],[25],[27],[54]		7.25%	[18],[26],[28],[55]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[55]	$ 31,002
Ending balance	[20],[25],[54]	30,636
Investment, Identifier [Axis]: Gulf Manufacturing, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		132
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[39],[40]	888
Gross Additions		132
Gross Reductions		0
Ending balance	[41],[42]	1,020
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)		0		2,490
Amount of Interest, Fees or Dividends Credited to Income		178		924
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		14,730	[19],[39],[40]	9,070
Gross Additions		0		2,490
Gross Reductions		0		0
Ending balance		$ 14,730	[21],[41],[42]	$ 11,560
Investment, Identifier [Axis]: Gulf Manufacturing, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				13.00%
Spread		7.63%	[27],[30],[41],[42]	7.63%	7.63%	[28],[31],[39],[40]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(2)		49
Amount of Interest, Fees or Dividends Credited to Income		9		102
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		0
Gross Additions		2		0
Gross Reductions		2		0
Ending balance		$ 0	[30],[41],[42]	$ 0
Investment, Identifier [Axis]: Gulf Manufacturing, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%	[41],[42]	13.00%	12.19%	[39],[40]
Spread		7.63%	[27],[41],[42]	7.63%	7.63%	[28],[39],[40]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(23)		394
Amount of Interest, Fees or Dividends Credited to Income		1,177		1,552
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		39,000	[39],[40]	0
Gross Additions		23		40,000
Gross Reductions		523		0
Ending balance		$ 38,500	[41],[42]	40,000
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.50%
PIK Rate		12.50%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		298
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		220
Gross Reductions		0
Ending balance		1,738
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, ESecured Debt 1
Schedule of Investments [Line Items]
Spread	[26],[28],[29],[31]				9.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[26],[29],[31]	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		0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		0		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		(930)
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		2,460
Gross Additions		0		0
Gross Reductions		0		930
Ending balance		$ 0		$ 1,530
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Spread		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
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				14.98%
Spread		9.50%	[14],[25],[27],[30]	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	[14],[25],[30]	$ 0
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%	[14]	12.50%	12.50%	[29]
PIK Rate		12.50%	[13],[14]		12.50%	[15],[29]
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		$ 1,518	[29]	2,284
Gross Additions				0
Gross Reductions				0
Ending balance		1,738	[14]	2,284
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	0
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[18],[26]				8.75%
Spread	[18],[26],[28]				3.50%
PIK Rate	[15],[18],[26]				2.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	2,327
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[18],[29]				2.50%
PIK Rate	[15],[18],[29]				2.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[29]	418
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings., Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20]	$ 0
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[20],[25]	8.75%
Spread	[20],[25],[27]	3.50%
PIK Rate	[13],[20],[25]	2.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 2,200
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[14],[20]	2.50%
PIK Rate	[13],[14],[20]	2.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[14],[20]	$ 244
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread	[18],[26],[28],[31]				6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	(35)
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[18],[26]				10.86%
Spread	[18],[26],[28]				6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	6,666
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[18],[26]				10.86%
Spread	[18],[26],[28]				6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	4,713
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[18],[26]				10.86%
Spread	[18],[26],[28]				6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	16,453
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 5
Schedule of Investments [Line Items]
Total Rate	[18],[26]				10.86%
Spread	[18],[26],[28]				6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 8,039
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC., Secured Debt 1
Schedule of Investments [Line Items]
Spread	[20],[25],[27],[30]	6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25],[30]	$ (32)
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[20],[25]	10.82%
Spread	[20],[25],[27]	6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 6,649
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[20],[25]	10.82%
Spread	[20],[25],[27]	6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 4,701
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC., Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[20],[25]	10.82%
Spread	[20],[25],[27]	6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 16,411
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC., Secured Debt 5
Schedule of Investments [Line Items]
Total Rate	[20],[25]	10.82%
Spread	[20],[25],[27]	6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 8,019
Investment, Identifier [Axis]: HOWLCO LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[11],[26],[39],[40]				11.28%
Spread	[11],[26],[28],[39],[40]				6.50%
PIK Rate	[11],[15],[26],[39],[40]				3.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11],[26],[39],[40]	$ 26,096
Investment, Identifier [Axis]: HOWLCO LLC., Secured Debt
Schedule of Investments [Line Items]
Total Rate	[12],[25],[41],[42]	10.96%
Spread	[12],[25],[27],[41],[42]	6.50%
PIK Rate	[12],[13],[25],[41],[42]	3.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[12],[25],[41],[42]	$ 26,183
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)				0
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				1,869
Gross Additions				0
Gross Reductions				0
Ending balance				1,869
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		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		4,472		4,225
Gross Additions		194		0
Gross Reductions		204		0
Ending balance		4,462		4,225
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)		113		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		5,861		3,773
Gross Additions		113		0
Gross Reductions		0		0
Ending balance		5,974		3,773
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)		83
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		83
Gross Reductions		0
Ending balance		4,270
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	[39],[43],[44]	441
Ending balance	[45]	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	[39],[43],[44]	383
Ending balance	[45]	383
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	[19],[39],[43],[44]	8,818
Ending balance	[21],[45]	8,732
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	[19],[39],[43],[44]	4,187
Ending balance	[21],[45]	4,270
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	[39],[43],[44]	1,226
Ending balance	[41],[45],[46]	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	[39],[43],[44]	4,472
Ending balance	[41],[45],[46]	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	[39],[43],[44]	5,861
Ending balance	[41],[45],[46]	5,974
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)		50		260
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	[19]	4,660
Gross Additions		50		260
Gross Reductions		0		0
Ending balance		7,060	[21]	4,920
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)		860		430
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	[19]	17,460
Gross Additions		860		430
Gross Reductions		0		0
Ending balance		21,120	[21]	17,890
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)		40		20
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	[35]	920
Gross Additions		40		20
Gross Reductions		0		0
Ending balance		$ 1,110	[36]	$ 940
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.48%	[25]	11.53%	10.73%	[26]
Spread		6.00%	[25],[27]	6.00%	6.00%	[26],[28]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		83		64
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,645	[26]	1,974
Gross Additions		1,497		2,182
Gross Reductions		1,640		2,720
Ending balance		$ 2,502	[25]	$ 1,436
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%		12.50%	12.50%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(14)		(14)
Amount of Interest, Fees or Dividends Credited to Income		1,428		1,444
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		45,256		45,256
Gross Additions		14		14
Gross Reductions		14		14
Ending balance		45,256		45,256
Investment, Identifier [Axis]: Hornblower Sub, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[18],[26],[34]				9.92%
Spread	[18],[26],[28],[34]				5.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[34]	2,407
Investment, Identifier [Axis]: Hornblower Sub, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[18],[26]				10.11%
Spread	[18],[26],[28]				5.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 30,701
Investment, Identifier [Axis]: Hornblower Sub, LLC., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[20],[24],[25]	9.80%
Spread	[20],[24],[25],[27]	5.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[24],[25]	$ 4,790
Investment, Identifier [Axis]: Hornblower Sub, LLC., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[20],[25]	9.81%
Spread	[20],[25],[27]	5.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 30,424
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)		310		(130)
Amount of Interest, Fees or Dividends Credited to Income		49		1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,930	[19]	3,340
Gross Additions		310		0
Gross Reductions		0		130
Ending balance		$ 4,240	[21]	$ 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%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		60
Amount of Interest, Fees or Dividends Credited to Income		75		61
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,940		2,880
Gross Additions		0		60
Gross Reductions		0		0
Ending balance		2,940		2,940
Investment, Identifier [Axis]: Hybrid Promotions, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[18],[26]				13.10%
Spread	[18],[26],[28]				8.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 7,200
Investment, Identifier [Axis]: Hybrid Promotions, LLC., Secured Debt
Schedule of Investments [Line Items]
Total Rate	[20],[25]	12.82%
Spread	[20],[25],[27]	8.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 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%
Diluted, percentage (as a percent)				20.00%
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
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)		1,550		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		14,400
Gross Additions		1,550		0
Gross Reductions		0		0
Ending balance		$ 17,780		$ 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)		26		0
Amount of Interest, Fees or Dividends Credited to Income		57		7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,572		(35)
Gross Additions		28		2
Gross Reductions		0		0
Ending balance		$ 1,600		$ (33)
Investment, Identifier [Axis]: IG Investor, LLC, Secured Debt 2
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)		227		0
Amount of Interest, Fees or Dividends Credited to Income		1,160		1,232
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		35,257		36,934
Gross Additions		247		22
Gross Reductions		440		440
Ending balance		$ 35,064		$ 36,516
Investment, Identifier [Axis]: IG Parent Corporation, Secured Debt 1
Schedule of Investments [Line Items]
Spread		5.75%	[12],[25],[27],[30]		5.75%	[11],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11],[26],[31]	$ 0
Ending balance	[12],[25],[30]	$ 0
Investment, Identifier [Axis]: IG Parent Corporation, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.17%	[12],[25]		10.21%	[11],[26]
Spread		5.75%	[12],[25],[27]		5.75%	[11],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11],[26]	$ 10,154
Ending balance	[12],[25]	$ 10,154
Investment, Identifier [Axis]: IG Parent Corporation, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.17%	[12],[25]		10.21%	[11],[26]
Spread		5.75%	[12],[25],[27]		5.75%	[11],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11],[26]	$ 4,903
Ending balance	[12],[25]	$ 4,891
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.96%	[25]	16.53%	13.78%	[26]
Spread		8.50%	[25],[27]	9.00%	9.00%	[26],[28]
PIK Rate				2.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(1)		0
Amount of Interest, Fees or Dividends Credited to Income		40		36
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,180	[26]	816
Gross Additions		1		5
Gross Reductions		1		0
Ending balance		$ 1,180	[25]	$ 821
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.96%	[25]	16.53%	13.78%	[26]
Spread		8.50%	[25],[27]	9.00%	9.00%	[26],[28]
PIK Rate				2.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(1)		0
Amount of Interest, Fees or Dividends Credited to Income		34		32
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		994	[26]	697
Gross Additions		1		5
Gross Reductions		1		0
Ending balance		$ 994	[25]	$ 702
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.96%	[25]	15.53%	12.78%	[26]
Spread		7.50%	[25],[27]	8.00%	8.00%	[26],[28]
PIK Rate				2.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(67)		0
Amount of Interest, Fees or Dividends Credited to Income		201		238
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,438	[26]	3,430
Gross Additions		67		88
Gross Reductions		67		0
Ending balance		$ 4,438	[25]	$ 3,518
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		13.96%	[25]	17.53%	14.78%	[26]
Spread		9.50%	[25],[27]	10.00%	10.00%	[26],[28]
PIK Rate				2.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(67)		0
Amount of Interest, Fees or Dividends Credited to Income		223		260
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,438	[26]	3,430
Gross Additions		67		88
Gross Reductions		67		0
Ending balance		4,438	[25]	3,518
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)		970		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		5,690	[16]	2,091
Gross Additions		970		0
Gross Reductions		0		0
Ending balance		6,660	[17]	2,091
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C., Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	1,020
Ending balance	[20]	1,280
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[18],[26],[34]				11.39%
Spread	[18],[26],[28],[34]				7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[34]	1,581
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[18],[26]				11.62%
Spread	[18],[26],[28]				7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 20,559
Investment, Identifier [Axis]: Implus Footcare, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.73%	[14],[20],[25]		13.73%	[18],[26]
Spread		7.75%	[14],[20],[25],[27]		7.75%	[18],[26],[28]
PIK Rate		1.50%	[13],[14],[20],[25]		1.50%	[15],[18],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 15,892
Ending balance	[14],[20],[25]	13,417
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)		(540)		220
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	[18]	17,690
Gross Additions		0		220
Gross Reductions		540		0
Ending balance		19,850	[20]	17,910
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				98
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		9,080	[19]	4,000
Gross Additions				368
Gross Reductions				0
Ending balance		$ 7,930	[21]	$ 4,368
Investment, Identifier [Axis]: Infinity X1 Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%		13.00%	12.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(9)		0
Amount of Interest, Fees or Dividends Credited to Income		453		580
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		15,050		17,403
Gross Additions		9		10
Gross Reductions		234		224
Ending balance		14,825		17,189
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)		(1,150)
Amount of Interest, Fees or Dividends Credited to Income		838
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		9,080
Gross Additions		0
Gross Reductions		1,150
Ending balance		7,930
Investment, Identifier [Axis]: Insight Borrower Corporation, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	320
Ending balance	[20]	$ 320
Investment, Identifier [Axis]: Insight Borrower Corporation, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.25%	[20],[25],[27],[30]		6.25%	[18],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	$ (54)
Ending balance	[20],[25],[30]	$ (51)
Investment, Identifier [Axis]: Insight Borrower Corporation, Secured Debt 2
Schedule of Investments [Line Items]
Spread		6.25%	[20],[25],[27],[30]		6.25%	[18],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	$ (47)
Ending balance	[20],[25],[30]	$ (44)
Investment, Identifier [Axis]: Insight Borrower Corporation, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.54%	[20],[25]		10.87%	[18],[26]
Spread		6.25%	[20],[25],[27]		6.25%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 13,539
Ending balance	[20],[25]	13,291
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	27
Ending balance	[20]	$ 38
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		14.42%	[20],[25]		14.69%	[18],[26],[34]
Spread		10.00%	[20],[25],[27]		10.00%	[18],[26],[28],[34]
PIK Rate		2.00%	[13],[20],[25]		2.00%	[15],[18],[26],[34]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[34]	$ 725
Ending balance	[20],[25]	$ 769
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.42%	[20],[25]		14.58%	[18],[26]
Spread		10.00%	[20],[25],[27]		10.00%	[18],[26],[28]
PIK Rate		2.00%	[13],[20],[25]		2.00%	[15],[18],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 6,636
Ending balance	[20],[25]	$ 6,631
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		14.42%	[20],[25]		14.58%	[18],[26]
Spread		10.00%	[20],[25],[27]		10.00%	[18],[26],[28]
PIK Rate		2.00%	[13],[20],[25]		2.00%	[15],[18],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 2,669
Ending balance	[20],[25]	$ 2,667
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[20],[25]	14.42%
Spread	[20],[25],[27]	10.00%
PIK Rate	[13],[20],[25]	2.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 308
Investment, Identifier [Axis]: Integral Energy Services, Common Stock
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				11
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		550	[18]	160
Gross Additions				140
Gross Reductions				0
Ending balance		550	[20]	$ 300
Investment, Identifier [Axis]: Integral Energy Services, 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		550
Gross Additions		0
Gross Reductions		0
Ending balance		$ 550
Investment, Identifier [Axis]: Integral Energy Services, Preferred Equity
Schedule of Investments [Line Items]
Total Rate		10.00%	[20],[21]	10.00%	10.00%	[18],[19]
PIK Rate		10.00%	[13],[20],[21]	10.00%	10.00%	[15],[18],[19]
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				9
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 452	[18],[19]	300
Gross Additions				9
Gross Reductions				0
Ending balance		459	[20],[21]	$ 309
Investment, Identifier [Axis]: Integral Energy Services, 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		6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		452
Gross Additions		6
Gross Reductions		0
Ending balance		$ 458
Investment, Identifier [Axis]: Integral Energy Services, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.07%	[20],[25]	13.09%	12.35%	[18],[26]
Spread		7.50%	[20],[25],[27]	7.50%	7.50%	[18],[26],[28]
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				236
Amount of Interest, Fees or Dividends Credited to Income				511
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 12,728	[18],[26]	13,891
Gross Additions				267
Gross Reductions				1,355
Ending balance		12,741	[20],[25]	12,803
Investment, Identifier [Axis]: Integral Energy Services, Secured Debt 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		403
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		12,728
Gross Additions		13
Gross Reductions		0
Ending balance		12,741
Investment, Identifier [Axis]: Interface Security Systems, L.L.C, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	0
Ending balance	[20]	$ 0
Investment, Identifier [Axis]: Interface Security Systems, L.L.C, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		14.41%	[20],[22],[24]		14.54%	[18],[23],[34]
Spread		10.00%	[20],[22],[24],[27]		10.00%	[18],[23],[28],[34]
PIK Rate		14.41%	[13],[20],[22],[24]		14.54%	[15],[18],[23],[34]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[23],[34]	$ 1,580
Ending balance	[20],[22],[24]	$ 1,655
Investment, Identifier [Axis]: Interface Security Systems, L.L.C, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.67%	[14],[20],[22],[25]		11.67%	[18],[23],[26],[29]
Spread		7.00%	[14],[20],[22],[25],[27]		7.00%	[18],[23],[26],[28],[29]
PIK Rate		11.67%	[13],[14],[20],[22],[25]		11.67%	[15],[18],[23],[26],[29]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[23],[26],[29]	$ 13
Ending balance	[14],[20],[22],[25]	$ 10
Investment, Identifier [Axis]: Invincible Boat Company, LLC., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.97%	[20],[25]		12.01%	[18],[26],[34]
Spread		7.50%	[20],[25],[27]		7.50%	[18],[26],[28],[34]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[34]	$ 995
Ending balance	[20],[25]	$ 988
Investment, Identifier [Axis]: Invincible Boat Company, LLC., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.97%	[20],[25]		12.01%	[18],[26]
Spread		7.50%	[20],[25],[27]		7.50%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 16,098
Ending balance	[20],[25]	15,868
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
Gross Additions		0
Gross Reductions		0
Ending balance		$ 2,850
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		148
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,493
Gross Additions		2
Gross Reductions		0
Ending balance		$ 4,495
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 5
Schedule of Investments [Line Items]
Total Rate		13.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		337
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		9,638
Gross Additions		22
Gross Reductions		288
Ending balance		9,372
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		2,680
Gross Additions				0
Gross Reductions				0
Ending balance		$ 2,850		$ 2,680
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Preferred Equity
Schedule of Investments [Line Items]
Total Rate		25.00%			25.00%
PIK Rate		25.00%	[13]		25.00%	[15]
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		760
Gross Additions		0
Gross Reductions		0
Ending balance		$ 760
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		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				156
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 4,493		4,487
Gross Additions				2
Gross Reductions				0
Ending balance		$ 4,495		$ 4,489
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		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		97		101
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,927		2,922
Gross Additions		1		1
Gross Reductions		0		0
Ending balance		$ 2,928		$ 2,923
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		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		291		305
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		8,944		8,944
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 8,944		$ 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%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		579		677
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		17,542		19,503
Gross Additions		7		8
Gross Reductions		0		0
Ending balance		$ 17,549		$ 19,511
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 5
Schedule of Investments [Line Items]
Total Rate		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				380
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 9,638		10,273
Gross Additions				23
Gross Reductions				201
Ending balance		9,372		$ 10,095
Investment, Identifier [Axis]: Isagenix International, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11]	0
Ending balance	[12]	$ 0
Investment, Identifier [Axis]: Isagenix International, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		10.91%	[12],[25],[56]		11.25%	[11],[26]
Spread		6.60%	[12],[25],[27],[56]		6.60%	[11],[26],[28]
PIK Rate		8.41%	[12],[13],[25],[56]		8.75%	[11],[15],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11],[26]	$ 663
Ending balance	[12],[25],[56]	$ 458
Investment, Identifier [Axis]: Island Pump and Tank, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		5.50%	[20],[25],[27],[30]		6.50%	[18],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	$ (5)
Ending balance	[20],[25],[30]	$ (5)
Investment, Identifier [Axis]: Island Pump and Tank, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.07%	[20],[25],[54]		10.35%	[18],[26]
Spread		5.50%	[20],[25],[27],[54]		5.50%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 1,722
Ending balance	[20],[25],[54]	$ 2,063
Investment, Identifier [Axis]: Island Pump and Tank, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.07%	[20],[25],[54]		11.35%	[18],[26]
Spread		6.50%	[20],[25],[27],[54]		6.50%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 1,722
Ending balance	[20],[25],[54]	$ 2,063
Investment, Identifier [Axis]: Island Pump and Tank, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		12.07%	[20],[25],[54]		12.35%	[18],[26]
Spread		7.50%	[20],[25],[27],[54]		7.50%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 1,722
Ending balance	[20],[25],[54]	$ 2,063
Investment, Identifier [Axis]: JDC Power Services, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.50%	[20],[25],[27],[30]		6.50%	[18],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	$ (162)
Ending balance	[20],[25],[30]	$ (153)
Investment, Identifier [Axis]: JDC Power Services, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.80%	[20],[25]		10.83%	[18],[26]
Spread		6.50%	[20],[25],[27]		6.50%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 60,336
Ending balance	[20],[25]	60,579
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	300
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20]	$ 130
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.80%	[20],[24],[25]		12.72%	[18],[26],[34]
Spread		6.25%	[20],[24],[25],[27]		8.00%	[18],[26],[28],[34]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[34]	$ 7,977
Ending balance	[20],[24],[25]	$ 7,985
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.80%	[20],[25]		12.58%	[18],[26]
Spread		6.25%	[20],[25],[27]		8.00%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 33,879
Ending balance	[20],[25]	$ 33,445
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.80%	[20],[25]		12.58%	[18],[26]
Spread		6.25%	[20],[25],[27]		8.00%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 3,176
Ending balance	[20],[25]	3,144
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	870
Ending balance	[20]	$ 870
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.58%	[20],[25],[54]		12.18%	[18],[26],[55]
Spread		7.00%	[20],[25],[27],[54]		7.50%	[18],[26],[28],[55]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[55]	$ 792
Ending balance	[20],[25],[54]	$ 782
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.45%	[20],[25],[54]		12.19%	[18],[26],[55]
Spread		7.00%	[20],[25],[27],[54]		7.50%	[18],[26],[28],[55]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[55]	$ 627
Ending balance	[20],[25],[54]	$ 625
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.45%	[20],[25],[54]		12.18%	[18],[26]
Spread		7.00%	[20],[25],[27],[54]		7.50%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 60
Ending balance	[20],[25],[54]	$ 667
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		11.68%	[20],[25]		12.18%	[18],[26]
Spread		7.00%	[20],[25],[27]		7.50%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 1,843
Ending balance	[20],[25]	1,817
Investment, Identifier [Axis]: Jensen Jewelers of Idaho, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				15.25%
Spread				6.75%
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				1,998
Gross Additions				0
Gross Reductions				98
Ending balance				1,900
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)		240
Amount of Interest, Fees or Dividends Credited to Income		260		456
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		11,820	[19]	12,420
Gross Additions		0		240
Gross Reductions		280		0
Ending balance		$ 11,540	[21]	$ 12,660
Investment, Identifier [Axis]: Jensen Jewelers of Idaho, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				15.25%
Spread		6.75%	[25],[27],[30]	6.75%	6.75%	[26],[28],[31]
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	[26],[31]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[25],[30]	0
Investment, Identifier [Axis]: Jensen Jewelers of Idaho, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.25%	[25]		14.50%	[26]
Spread		6.75%	[25],[27]		6.75%	[26],[28]
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	[26]	1,498
Gross Additions		0
Gross Reductions		160
Ending balance	[25]	1,338
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[12]	140
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Common Stock 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11]	0
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Common Stock 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11]	$ 140
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.14%	[12],[25]		21.59%	[11],[23],[26],[29]
Spread		8.75%	[12],[25],[27]		16.00%	[11],[23],[26],[28],[29]
PIK Rate		6.00%	[12],[13],[25]		21.59%	[11],[15],[23],[26],[29]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11],[23],[26],[29]	$ 0
Ending balance	[12],[25]	$ 1,797
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.14%	[12],[25]		21.59%	[11],[23],[26],[29]
Spread		8.75%	[12],[25],[27]		16.00%	[11],[23],[26],[28],[29]
PIK Rate		13.14%	[12],[13],[25]		21.59%	[11],[15],[23],[26],[29]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11],[23],[26],[29]	$ 0
Ending balance	[12],[25]	1,357
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[26]				13.21%
Spread	[11],[26],[28]				8.75%
PIK Rate	[11],[15],[26]				6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11],[26]	1,770
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[11],[26]				13.18%
Spread	[11],[26],[28]				8.75%
PIK Rate	[11],[15],[26]				13.18%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11],[26]	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)		1,480		170
Amount of Interest, Fees or Dividends Credited to Income		384		217
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		14,550		9,620
Gross Additions		1,480		170
Gross Reductions		0		0
Ending balance		16,030		$ 9,790
Investment, Identifier [Axis]: Johnson Downie Opco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				15.00%
Amount of Realized Gain/(Loss)		0		$ 0
Amount of Unrealized Gain/(Loss)		(2)		(2)
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		0
Gross Additions		2		2
Gross Reductions		2		2
Ending balance		$ 0		$ 0
Investment, Identifier [Axis]: Johnson Downie Opco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.00%		15.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(12)		(12)
Amount of Interest, Fees or Dividends Credited to Income		818		929
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		21,507		24,207
Gross Additions		12		12
Gross Reductions		12		12
Ending balance		21,507		24,207
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		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)		490		0
Amount of Interest, Fees or Dividends Credited to Income		285		243
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		13,180	[19]	10,741
Gross Additions		490		0
Gross Reductions		0		0
Ending balance		$ 13,670	[21]	$ 10,741
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				791
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				25,483
Gross Additions				13
Gross Reductions				0
Ending balance		$ 23,228		25,496
Investment, Identifier [Axis]: JorVet Holdings, LLC,Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		711
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		23,216
Gross Additions		12
Gross Reductions		0
Ending balance		23,228
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		1,590
Amount of Interest, Fees or Dividends Credited to Income		707		572
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		25,180		22,770
Gross Additions		0		1,590
Gross Reductions		0		0
Ending balance		$ 25,180	[21]	$ 24,360
Investment, Identifier [Axis]: KBK Industries, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		9.00%		9.00%	9.00%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(4)		(4)
Amount of Interest, Fees or Dividends Credited to Income		85		110
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,700		4,700
Gross Additions		4		4
Gross Reductions		304		204
Ending balance		3,400		4,500
Investment, Identifier [Axis]: KMS, LLC, Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20]	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
Investment, Identifier [Axis]: KMS, LLC, Secured Debt .11
Schedule of Investments [Line Items]
Total Rate		12.50%
PIK Rate		12.50%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		20
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		1,144
Gross Reductions		0
Ending balance		$ 1,144
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.50%	[20]		14.50%	[18],[26],[29]
Spread	[18],[26],[28],[29]				9.75%
PIK Rate	[13],[20]	12.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[29]	$ 662
Ending balance	[20]	$ 1,073
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		14.50%
Spread		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		663
Gross Additions		0
Gross Reductions		663
Ending balance		$ 0
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%	[20]		14.23%	[18],[26]
Spread	[18],[26],[28]				9.75%
PIK Rate		12.50%	[13],[20]		14.23%	[15],[18],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 450
Ending balance	[20]	$ 1,144
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 2.1
Schedule of Investments [Line Items]
Total Rate		14.50%
Spread		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		4,779
Gross Additions		0
Gross Reductions		4,779
Ending balance		0
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[18],[26]				14.23%
Spread	[18],[26],[28]				9.75%
PIK Rate	[15],[18],[26]				14.23%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 440
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 3.1
Schedule of Investments [Line Items]
Spread		9.75%
PIK Rate		14.23%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		450
Gross Additions		0
Gross Reductions		450
Ending balance		0
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[18],[26],[29]				14.50%
Spread	[18],[26],[28],[29]				9.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[29]	$ 4,779
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 4.1
Schedule of Investments [Line Items]
Spread		9.75%
PIK Rate		14.23%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		440
Gross Additions		0
Gross Reductions		440
Ending balance		$ 0
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 5.1
Schedule of Investments [Line Items]
Total Rate		14.23%
Spread		9.75%
PIK Rate		14.23%
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
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 6.1
Schedule of Investments [Line Items]
Total Rate		12.50%
PIK Rate		12.50%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		20
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		1,073
Gross Reductions		0
Ending balance		1,073
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		0
Amount of Interest, Fees or Dividends Credited to Income		30		31
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,710	[19],[35]	2,730
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		2,710	[21],[36]	2,730
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)		650		890
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		9,690
Gross Additions		650		890
Gross Reductions		0		0
Ending balance		$ 12,890		$ 10,580
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.50%		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		423		603
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		14,987		19,774
Gross Additions		2		2
Gross Reductions		800		0
Ending balance		$ 14,189		$ 19,776
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		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		89		87
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,926		3,805
Gross Additions		0		0
Gross Reductions		12		10
Ending balance		3,914		3,795
Investment, Identifier [Axis]: LKCM Headwater Investments I, L.P., LP Interests
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[39],[43],[44]	2,926
Ending balance	[21],[41],[45],[46]	$ 1,542
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.67%	[20],[25]		11.89%	[18],[26]
Spread		7.25%	[20],[25],[27]		7.25%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 1,156
Ending balance	[20],[25]	$ 1,156
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.67%	[20],[25]		11.92%	[18],[26]
Spread		7.25%	[20],[25],[27]		7.25%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 8,575
Ending balance	[20],[25]	$ 8,551
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.67%	[20],[25]		11.71%	[18],[26]
Spread		7.25%	[20],[25],[27]		7.25%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 5,485
Ending balance	[20],[25]	$ 5,471
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		11.67%	[20],[25]		11.71%	[18],[26]
Spread		7.25%	[20],[25],[27]		7.25%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 2,878
Ending balance	[20],[25]	$ 2,871
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 5
Schedule of Investments [Line Items]
Total Rate		11.67%	[20],[25]		11.92%	[18],[26]
Spread		7.25%	[20],[25],[27]		7.25%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 1,118
Ending balance	[20],[25]	$ 1,115
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 6
Schedule of Investments [Line Items]
Total Rate		11.67%	[20],[25]		11.71%	[18],[26]
Spread		7.25%	[20],[25],[27]		7.25%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 11,326
Ending balance	[20],[25]	$ 11,299
Investment, Identifier [Axis]: LLFlex, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.46%	[20],[25]		12.74%	[18],[26]
Spread		8.00%	[20],[25],[27]		8.00%	[18],[26],[28]
PIK Rate		3.00%	[13],[20],[25]		3.00%	[15],[18],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 3,316
Ending balance	[20],[25]	3,267
Investment, Identifier [Axis]: Lightbox Holdings, L.P., Secured Debt
Schedule of Investments [Line Items]
Total Rate	[11]				9.44%
Spread	[11],[28]				5.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11]	$ 15,059
Investment, Identifier [Axis]: Logix Acquisition Company, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.25%	[20],[22],[25]		12.25%	[18],[23],[26]
Spread		4.25%	[20],[22],[25],[27]		4.25%	[18],[23],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[23],[26]	$ 19,739
Ending balance	[20],[22],[25]	24,317
Investment, Identifier [Axis]: Looking Glass Investments, LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[39],[44]	25
Ending balance	[41],[46]	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
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
Investment, Identifier [Axis]: MH Corbin Holding LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate				14.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				184
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				5,022
Gross Additions				0
Gross Reductions				80
Ending balance				4,942
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)		(177)		0
Amount of Interest, Fees or Dividends Credited to Income		479		508
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		14,034	[19],[39],[43],[44]	14,527
Gross Additions		0		0
Gross Reductions		177		0
Ending balance		13,857		$ 14,527
Investment, Identifier [Axis]: MS Private Loan Fund I, LP, LP Interests
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[21],[41],[45],[46]	$ 13,857
Investment, Identifier [Axis]: MS Private Loan Fund I, LP, Secured Debt
Schedule of Investments [Line Items]
Total Rate		5.00%		5.00%	5.00%	[39],[44]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		55		13
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,600	[39],[44]	0
Gross Additions		10,100		5,000
Gross Reductions		1,700		3,000
Ending balance		$ 10,000		2,000
Investment, Identifier [Axis]: MS Private Loan Fund I, LP, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[41],[46]	5.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[41],[46]	$ 10,000
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		219
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		7,843
Gross Additions		708
Gross Reductions		0
Ending balance		8,551
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				26
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		7,843	[19],[39],[43],[44]	1,561
Gross Additions				1,795
Gross Reductions				0
Ending balance				$ 3,356
Investment, Identifier [Axis]: MS Private Loan Fund II, LP, LP Interests
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[21],[41],[45],[46]	$ 8,551
Investment, Identifier [Axis]: MS Private Loan Fund II, LP, Secured Debt
Schedule of Investments [Line Items]
Total Rate				8.88%
Spread		3.50%		3.50%	3.00%	[26],[28],[31],[39],[44]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		12		703
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		(59)	[26],[31],[39],[44]	23,367
Gross Additions		605		9,520
Gross Reductions		650		5,000
Ending balance		$ (104)		27,887
Investment, Identifier [Axis]: MS Private Loan Fund II, LP, Secured Debt
Schedule of Investments [Line Items]
Spread	[25],[27],[30],[41],[46]	3.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[25],[30],[41],[46]	$ (104)
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)		(7,830)		11,197
Amount of Interest, Fees or Dividends Credited to Income		2,493		3,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		246,000	[19],[57]	174,063
Gross Additions		0		11,197
Gross Reductions		7,830		0
Ending balance		238,170	[21],[58]	185,260
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		(108)
Amount of Interest, Fees or Dividends Credited to Income		495		523
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		16,810	[19],[39],[44]	10,025
Gross Additions		4,702		2,501
Gross Reductions		0		108
Ending balance		21,512	[21],[41],[46]	12,418
Investment, Identifier [Axis]: MVI MSO, LLC (Milford Vascular) 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		2,700
Gross Reductions		0
Ending balance		2,700
Investment, Identifier [Axis]: MVI MSO, LLC (Milford Vascular), 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		199
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		9,753
Gross Reductions		0
Ending balance		$ 9,753
Investment, Identifier [Axis]: MVI MSO, LLC (Milford Vascular), Common Equity
Schedule of Investments [Line Items]
Total Rate		13.00%
Investment, Identifier [Axis]: MVI MSO, LLC (Milford Vascular), Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		$ 2,700
Investment, Identifier [Axis]: MVI MSO, LLC (Milford Vascular), Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		$ 9,753
Investment, Identifier [Axis]: Mako Steel, LP, Secured Debt 1
Schedule of Investments [Line Items]
Spread	[18],[26],[28],[31]				7.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	0
Investment, Identifier [Axis]: Mako Steel, LP, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[18],[26]				12.00%
Spread	[18],[26],[28]				7.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	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)		520		980
Amount of Interest, Fees or Dividends Credited to Income		698		382
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		6,850		1,500
Gross Additions		520		980
Gross Reductions		0		0
Ending balance		7,370		$ 2,480
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[21]	$ 7,370
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Preferred Equity
Schedule of Investments [Line Items]
Total Rate		8.00%	[21]	8.00%	8.00%	[19]
PIK Rate		8.00%	[13],[21]	8.00%	8.00%	[15],[19]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(481)		118
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	[19]	6,035
Gross Additions		0		118
Gross Reductions		481		119
Ending balance		5,916	[21]	$ 6,034
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				11.75%
Amount of Realized Gain/(Loss)		0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		6		3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		(11)	[31]	0
Gross Additions		4		0
Gross Reductions		0		0
Ending balance		$ (7)	[30]	$ 0
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		9.75%		11.75%	9.75%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		498		724
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		20,844		23,623
Gross Additions		20		20
Gross Reductions		1,931		1,146
Ending balance		$ 18,933		22,497
Investment, Identifier [Axis]: Microbe Formulas, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		5.75%	[20],[25],[27],[30]		5.75%	[18],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	$ (39)
Ending balance	[20],[25],[30]	$ (36)
Investment, Identifier [Axis]: Microbe Formulas, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.17%	[20],[25]		10.22%	[18],[26]
Spread		5.75%	[20],[25],[27]		5.75%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 11,135
Ending balance	[20],[25]	$ 11,107
Investment, Identifier [Axis]: Microbe Formulas, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.07%	[20],[25]		10.21%	[18],[26]
Spread		5.75%	[20],[25],[27]		5.75%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 19,828
Ending balance	[20],[25]	19,828
Investment, Identifier [Axis]: Mills Fleet Farm Group, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[35]	13,840
Ending balance	[20],[36]	13,340
Investment, Identifier [Axis]: Mills Fleet Farm Group, LLC, Common Equity 1.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		(500)
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		13,840
Gross Additions		0
Gross Reductions		500
Ending balance		$ 13,340
Investment, Identifier [Axis]: Mills Fleet Farm Group, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[20],[25]	9.79%
Spread		5.50%	[20],[25],[27]		5.50%	[18],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	$ 0
Ending balance	[20],[25]	$ 2,652
Investment, Identifier [Axis]: Mills Fleet Farm Group, LLC, Secured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		9.79%
Spread		5.50%
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		0
Gross Additions		2,652
Gross Reductions		0
Ending balance		2,652
Investment, Identifier [Axis]: Mini Melts of America, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	430
Ending balance	[20]	$ 330
Investment, Identifier [Axis]: Mini Melts of America, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.56%	[20],[24],[25]		10.74%	[18],[26],[34]
Spread		6.25%	[20],[24],[25],[27]		6.25%	[18],[26],[28],[34]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[34]	$ 575
Ending balance	[20],[24],[25]	$ 1,575
Investment, Identifier [Axis]: Mini Melts of America, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.55%	[20],[25],[54]		10.77%	[18],[26],[55]
Spread		6.25%	[20],[25],[27],[54]		6.25%	[18],[26],[28],[55]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[55]	$ 1,315
Ending balance	[20],[25],[54]	$ 1,266
Investment, Identifier [Axis]: Mini Melts of America, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		9.56%	[20],[25]		9.76%	[18],[26]
Spread		5.25%	[20],[25],[27]		5.25%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 4,904
Ending balance	[20],[25]	$ 4,720
Investment, Identifier [Axis]: Mini Melts of America, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		11.56%	[20],[25]		11.76%	[18],[26]
Spread		7.25%	[20],[25],[27]		7.25%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 4,904
Ending balance	[20],[25]	$ 4,722
Investment, Identifier [Axis]: Moffitt Holdings, LLC, Common Stock
Schedule of Investments [Line Items]
Total Rate		13.00%
Amount of Unrealized Gain/(Loss)		$ 0
Amount of Interest, Fees or Dividends Credited to Income		520
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		34,656
Gross Reductions		0
Ending balance		34,656
Investment, Identifier [Axis]: Moffitt Holdings, LLC, Common Stock 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Investment, Identifier [Axis]: Moffitt Holdings, LLC, Common 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		0
Gross Additions		14,300
Gross Reductions		0
Ending balance		14,300
Investment, Identifier [Axis]: Moffitt Holdings, LLC, Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		$ 14,300
Investment, Identifier [Axis]: Moffitt Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		$ 34,656
Investment, Identifier [Axis]: MoneyThumb Acquisition, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Total Rate		12.00%			12.00%	[19]
PIK Rate		12.00%			12.00%	[15],[19]
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		51
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19]	1,707
Gross Additions		51
Gross Reductions		0
Ending balance		$ 1,758
Investment, Identifier [Axis]: MoneyThumb Acquisition, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Total Rate	[21]	12.00%
PIK Rate	[13],[21]	12.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[21]	$ 1,758
Investment, Identifier [Axis]: MoneyThumb Acquisition, 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		370
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		8,967
Gross Additions		34
Gross Reductions		0
Ending balance		$ 9,001
Investment, Identifier [Axis]: MoneyThumb Acquisition, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		14.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		$ 9,001
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	[16]	594
Gross Additions		0
Gross Reductions		0
Ending balance	[17]	594
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[39],[40]	796
Ending balance	[20],[41],[42]	$ 489
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.55%	[20],[25],[41],[42]		11.59%	[18],[26],[39],[40]
Spread		6.25%	[20],[25],[27],[41],[42]		7.00%	[18],[26],[28],[39],[40]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[39],[40]	$ 3,907
Ending balance	[20],[25],[41],[42]	$ 4,071
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.55%	[20],[25],[41],[42]		11.59%	[18],[26],[39],[40]
Spread		6.25%	[20],[25],[27],[41],[42]		7.00%	[18],[26],[28],[39],[40]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[39],[40]	$ 11,079
Ending balance	[20],[25],[41],[42]	$ 11,514
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.81%	[20],[25],[41],[42]		11.59%	[18],[26],[39],[40]
Spread		6.25%	[20],[25],[27],[41],[42]		7.00%	[18],[26],[28],[39],[40]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[39],[40]	$ 18,103
Ending balance	[20],[25],[41],[42]	$ 18,060
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Unsecured Debt 1
Schedule of Investments [Line Items]
Total Rate		8.00%	[20],[41],[42]		8.00%	[18],[39],[40]
PIK Rate		8.00%	[13],[20],[41],[42]		8.00%	[15],[18],[39],[40]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[39],[40]	$ 114
Ending balance	[20],[41],[42]	$ 116
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Unsecured Debt 2
Schedule of Investments [Line Items]
Total Rate		8.00%	[20],[41],[42]		8.00%	[18],[39],[40]
PIK Rate		8.00%	[13],[20],[41],[42]		8.00%	[15],[18],[39],[40]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[39],[40]	$ 54
Ending balance	[20],[41],[42]	$ 110
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Unsecured Debt 3
Schedule of Investments [Line Items]
Total Rate		8.00%	[20],[41],[42]		8.00%	[18],[39],[40]
PIK Rate		8.00%	[13],[20],[41],[42]		8.00%	[15],[18],[39],[40]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[39],[40]	$ 107
Ending balance	[20],[41],[42]	76
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)		0		0
Amount of Interest, Fees or Dividends Credited to Income		942		992
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		26,370	[19]	26,390
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		26,370	[21]	$ 26,390
Investment, Identifier [Axis]: Mystic Logistics Holdings, 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		1		1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[31]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[30]	$ 0
Investment, Identifier [Axis]: Mystic Logistics Holdings, LLC, Secured Debt 2
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)		(2)		20
Amount of Interest, Fees or Dividends Credited to Income		145		145
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,746		5,746
Gross Additions		2		0
Gross Reductions		2		0
Ending balance		5,746		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)		(160)		330
Amount of Interest, Fees or Dividends Credited to Income		137		32
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		9,050		11,730
Gross Additions		0		330
Gross Reductions		160		0
Ending balance		8,890		12,060
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)				0
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		94		1,466
Gross Additions				0
Gross Reductions				0
Ending balance		62		1,466
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)		(1,178)
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		1,178
Ending balance		1,518
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)				0
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,696		53
Gross Additions				0
Gross Reductions				0
Ending balance		1,518		$ 53
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)		(32)
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		32
Ending balance		62
Investment, Identifier [Axis]: NRP Jones, LLC, Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		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
Investment, Identifier [Axis]: NRP Jones, 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				63
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 2,178		2,080
Gross Additions				0
Gross Reductions				0
Ending balance		$ 2,183		2,080
Investment, Identifier [Axis]: NRP Jones, LLC, Secured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		12.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		70
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,178
Gross Additions		5
Gross Reductions		0
Ending balance		2,183
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Preferred Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19]	32,040
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		0
Amount of Unrealized Gain/(Loss)		28,520		4,390
Amount of Interest, Fees or Dividends Credited to Income		570		362
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		32,040		15,020
Gross Additions		28,520		4,390
Gross Reductions		0		0
Ending balance		$ 60,560	[21]	$ 19,410
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate				12.48%
Spread				7.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				0
Gross Additions				0
Gross Reductions				0
Ending balance				$ 0
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.50%		11.50%
Spread		7.00%	[25],[27],[30]		7.00%	[26],[28],[31]
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(15)
Amount of Interest, Fees or Dividends Credited to Income				778
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 0	[26],[31]	25,794
Gross Additions				15
Gross Reductions				15
Ending balance		$ 0	[25],[30]	$ 25,794
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt 1.1
Schedule of Investments [Line Items]
Spread		7.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(1)
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		1
Gross Reductions		1
Ending balance		$ 0
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%		11.50%	12.50%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(5)
Amount of Interest, Fees or Dividends Credited to Income				315
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 4,650		10,500
Gross Additions				5
Gross Reductions				5
Ending balance		$ 7,250		10,500
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.50%			12.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 62,200
Ending balance		62,200
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)		(8)
Amount of Interest, Fees or Dividends Credited to Income		224
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,650
Gross Additions		2,608
Gross Reductions		8
Ending balance		7,250
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt2.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		(12)
Amount of Interest, Fees or Dividends Credited to Income		1,956
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		62,200
Gross Additions		12
Gross Reductions		12
Ending balance		$ 62,200
Investment, Identifier [Axis]: Nello Industries Investco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.50%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		932
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		26,959
Gross Additions		13
Gross Reductions		0
Ending balance		26,972
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)		940
Amount of Interest, Fees or Dividends Credited to Income		171
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19]	15,560
Gross Additions		940
Gross Reductions		0
Ending balance	[21]	$ 16,500
Investment, Identifier [Axis]: Nello Industries Investco, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		$ 26,972
Investment, Identifier [Axis]: Nello Industries Investco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.50%			6.50%	[26],[28],[31]
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		0
Amount of Interest, Fees or Dividends Credited to Income		16
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[26],[31]	(16)
Gross Additions		16
Gross Reductions		0
Ending balance		0
Investment, Identifier [Axis]: Nello Industries Investco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate					13.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		26,959
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
Investment, Identifier [Axis]: NexRev LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19]	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)		1,510		1,860
Amount of Interest, Fees or Dividends Credited to Income		413		103
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		11,910		6,350
Gross Additions		1,510		1,860
Gross Reductions		0		0
Ending balance		13,420	[21]	$ 8,210
Investment, Identifier [Axis]: NexRev 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		0		2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0	[31]	0
Gross Additions		0		1,600
Gross Reductions		0		0
Ending balance		0		$ 1,600
Investment, Identifier [Axis]: NexRev LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				10.00%	9.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				261
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 9,811		9,751
Gross Additions				13
Gross Reductions				0
Ending balance				9,764
Investment, Identifier [Axis]: NinjaTrader, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.50%	[20],[25],[27],[30]		6.50%	[18],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	$ (6)
Ending balance	[20],[25],[30]	$ (5)
Investment, Identifier [Axis]: NinjaTrader, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.96%	[20],[25]		11.24%	[18],[26]
Spread		6.50%	[20],[25],[27]		6.50%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 28,243
Ending balance	[20],[25]	$ 28,062
Investment, Identifier [Axis]: Northwind Midstream Partners LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[20],[25]	10.70%
Spread	[20],[25],[27]	6.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 7,352
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		9,240
Gross Additions				960
Gross Reductions				0
Ending balance		6,000		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
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		5,150
Gross Additions				0
Gross Reductions				0
Ending balance		12,200		$ 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
Investment, Identifier [Axis]: NuStep, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.98%	[22],[25]	11.98%	11.16%	[26]
Spread		6.50%	[22],[25],[27]	6.50%	6.50%	[26],[28]
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				111
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 3,600	[26]	3,600
Gross Additions				0
Gross Reductions				0
Ending balance		3,600	[22],[25]	$ 3,600
Investment, Identifier [Axis]: NuStep, LLC, Secured Debt 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		99
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,600
Gross Additions		0
Gross Reductions		0
Ending balance		$ 3,600
Investment, Identifier [Axis]: NuStep, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%	[22]	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				562
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 18,439		18,426
Gross Additions				3
Gross Reductions				0
Ending balance		18,440	[22]	18,429
Investment, Identifier [Axis]: NuStep, 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		554
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		18,439
Gross Additions		1
Gross Reductions		0
Ending balance		18,440
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)		3,100		4,840
Amount of Interest, Fees or Dividends Credited to Income		7,487		675
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		72,720	[19]	36,380
Gross Additions		3,100		4,840
Gross Reductions		0		0
Ending balance		$ 75,820	[21]	$ 41,220
Investment, Identifier [Axis]: OMi Topco, 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)				(10)
Amount of Interest, Fees or Dividends Credited to Income				396
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 9,000		12,750
Gross Additions				10
Gross Reductions				760
Ending balance		14,000		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
Investment, Identifier [Axis]: OMi Topco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		49
Amount of Interest, Fees or Dividends Credited to Income		101
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		14,000
Gross Reductions		0
Ending balance		$ 14,000
Investment, Identifier [Axis]: Obra Capital, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[20],[25]	11.93%
Spread		7.50%	[20],[25],[27]		7.50%	[18],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	$ (4)
Ending balance	[20],[25]	$ 73
Investment, Identifier [Axis]: Obra Capital, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.93%	[20],[25]		11.97%	[18],[26]
Spread		7.50%	[20],[25],[27]		7.50%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 25,884
Ending balance	[20],[25]	25,859
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		0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0		$ 0
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Preferred Stock
Schedule of Investments [Line Items]
Total Rate		7.00%		7.00%	7.00%
PIK Rate		7.00%	[13]	7.00%	7.00%	[15]
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		0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0		$ 0
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.00%	[14]	12.00%	12.00%	[29]
PIK Rate		12.00%	[13],[14]	12.00%	12.00%	[15],[29]
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(42)
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 457	[29]	326
Gross Additions				0
Gross Reductions				43
Ending balance		$ 456	[14]	$ 283
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		12.00%
PIK Rate		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
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%	[14]	12.00%	12.00%	[29]
PIK Rate		12.00%	[13],[14]	12.00%	12.00%	[15],[29]
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(43)
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 218	[29]	332
Gross Additions				0
Gross Reductions				43
Ending balance		$ 218	[14]	$ 289
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 2.1
Schedule of Investments [Line Items]
Total Rate		12.00%
PIK Rate		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
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.00%	[14]	12.00%	12.00%	[29]
PIK Rate		12.00%	[13],[14]	12.00%	12.00%	[15],[29]
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(93)
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 101	[29]	716
Gross Additions				0
Gross Reductions				94
Ending balance		$ 101	[14]	$ 622
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 3.1
Schedule of Investments [Line Items]
Total Rate		12.00%
PIK Rate		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
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		12.00%	[14]	12.00%	12.00%	[29]
PIK Rate		12.00%	[13],[14]	12.00%	12.00%	[15],[29]
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(195)
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 99	[29]	1,493
Gross Additions				0
Gross Reductions				195
Ending balance		$ 99	[14]	$ 1,298
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 4.1
Schedule of Investments [Line Items]
Total Rate		12.00%
PIK Rate		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		0
Gross Reductions		0
Ending balance		$ 457
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Unsecured Debt
Schedule of Investments [Line Items]
Total Rate		10.00%	[14]	10.00%	10.00%	[29]
PIK Rate		10.00%	[13],[14]	10.00%	10.00%	[15],[29]
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	[29]	305
Gross Additions				0
Gross Reductions				0
Ending balance		$ 305	[14]	305
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Unsecured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		10.00%
PIK Rate		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
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	[16]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[17]	0
Investment, Identifier [Axis]: OnPoint Industrial Services, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.30%	[20],[25]		11.35%	[18],[26]
Spread		7.00%	[20],[25],[27]		7.00%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 1,386
Ending balance	[20],[25]	$ 1,396
Investment, Identifier [Axis]: OnPoint Industrial Services, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.30%	[20],[25]		11.33%	[18],[26]
Spread		7.00%	[20],[25],[27]		7.00%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 3,850
Ending balance	[20],[25]	3,880
Investment, Identifier [Axis]: Oneliance, LLC
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		250
Amount of Interest, Fees or Dividends Credited to Income		52
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,580
Gross Additions		250
Gross Reductions		0
Ending balance		2,830
Investment, Identifier [Axis]: Oneliance, LLC, 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		2,580	[19]	1,128
Gross Additions				0
Gross Reductions				0
Ending balance		2,830	[21]	$ 1,128
Investment, Identifier [Axis]: Oneliance, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				16.48%
Spread				11.00%
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
Investment, Identifier [Axis]: Oneliance, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				16.48%
Spread				11.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				61
Amount of Interest, Fees or Dividends Credited to Income				227
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				5,350
Gross Additions				64
Gross Reductions				80
Ending balance				5,334
Investment, Identifier [Axis]: Orttech Holdings, LLC, Debt 2
Schedule of Investments [Line Items]
Total Rate	[26]				15.66%
Spread	[26],[28]				11.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[26]	$ 21,960
Investment, Identifier [Axis]: Orttech Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.48%
Spread		11.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(12)
Amount of Interest, Fees or Dividends Credited to Income		846
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		21,960
Gross Additions		12
Gross Reductions		412
Ending balance		21,560
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		(710)
Amount of Interest, Fees or Dividends Credited to Income		60		60
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		13,450	[19],[35]	17,050
Gross Additions		0		0
Gross Reductions		0		710
Ending balance		$ 13,450	[21],[36]	$ 16,340
Investment, Identifier [Axis]: Orttech Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				16.48%
Spread		11.00%	[25],[27],[30]	11.00%	11.00%	[26],[28],[31]
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	[26],[31]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[25],[30]	$ 0
Investment, Identifier [Axis]: Orttech Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.48%	[25]	16.48%
Spread		11.00%	[25],[27]	11.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(12)
Amount of Interest, Fees or Dividends Credited to Income				926
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				22,040
Gross Additions				12
Gross Reductions				92
Ending balance		$ 21,560	[25]	21,960
Investment, Identifier [Axis]: Ospemifene Royalty Sub LLC, Secured Debt
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[29]	12
Ending balance	[14],[20]	55
Investment, Identifier [Axis]: Other, 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				0
Gross Reductions				0
Ending balance				0
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)		1,050		(1,110)
Amount of Interest, Fees or Dividends Credited to Income		177		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		17,110		16,980
Gross Additions		1,050		0
Gross Reductions		0		1,110
Ending balance		18,160		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)		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		514	[19],[35]	368
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 514	[21],[36]	$ 368
Investment, Identifier [Axis]: PPL RVs, Inc., SF, Secured Debt
Schedule of Investments [Line Items]
Spread		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
Investment, Identifier [Axis]: PPL RVs, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.48%
Spread		7.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(15)
Amount of Interest, Fees or Dividends Credited to Income		489
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		16,456
Gross Additions		15
Gross Reductions		915
Ending balance		$ 15,556
Investment, Identifier [Axis]: PPL RVs, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				14.23%
Spread		7.00%	[25],[27],[30]	8.75%	8.75%	[26],[28],[31]
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	[26],[31]	0
Gross Additions				0
Gross Reductions				0
Ending balance		$ 0	[25],[30]	$ 0
Investment, Identifier [Axis]: PPL RVs, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.48%	[25]	14.23%	13.73%	[26]
Spread		7.00%	[25],[27]	8.75%	8.75%	[26],[28]
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(14)
Amount of Interest, Fees or Dividends Credited to Income				726
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 16,456	[26]	19,877
Gross Additions				14
Gross Reductions				258
Ending balance		$ 15,556	[25]	19,633
Investment, Identifier [Axis]: PTL US Bidco, Inc, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.81%	[20],[24],[25],[41],[42]		13.03%	[18],[26],[39],[40]
Spread		8.25%	[20],[24],[25],[27],[41],[42]		8.25%	[18],[26],[28],[39],[40]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[39],[40]	$ 6,769
Ending balance	[20],[24],[25],[41],[42]	$ 6,734
Investment, Identifier [Axis]: PTL US Bidco, Inc, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.84%	[20],[25],[41],[42]		13.03%	[18],[26],[39],[40]
Spread		8.25%	[20],[25],[27],[41],[42]		8.25%	[18],[26],[28],[39],[40]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[39],[40]	$ 17,631
Ending balance	[20],[25],[41],[42]	16,834
Investment, Identifier [Axis]: Peaches Holding Corporation, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,540
Ending balance		1,650
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)				5,050
Amount of Interest, Fees or Dividends Credited to Income				2,829
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				44,090
Gross Additions				5,050
Gross Reductions				0
Ending balance				$ 49,140
Investment, Identifier [Axis]: Pearl Meyer Topco LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				12.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				122
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
Investment, Identifier [Axis]: Pearl Meyer Topco LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				12.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				19
Amount of Interest, Fees or Dividends Credited to Income				633
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				20,000
Gross Additions				4,000
Gross Reductions				0
Ending balance				$ 24,000
Investment, Identifier [Axis]: Pearl Meyer Topco LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate				12.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(8)
Amount of Interest, Fees or Dividends Credited to Income				848
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				27,681
Gross Additions				8
Gross Reductions				8
Ending balance				$ 27,681
Investment, Identifier [Axis]: Pinnacle TopCo, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				13.00%
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				30,339
Gross Additions				15
Gross Reductions				0
Ending balance				30,354
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)		1,740		0
Amount of Interest, Fees or Dividends Credited to Income		782		316
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		18,360	[19]	12,540
Gross Additions		1,740		0
Gross Reductions		0		0
Ending balance		20,100	[21]	$ 12,540
Investment, Identifier [Axis]: Pinnacle TopCo, LLC, Secured Debt
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		(1)
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		1
Gross Reductions		1
Ending balance		0
Investment, Identifier [Axis]: Pinnacle TopCo, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				8.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				444
Gross Additions				1
Gross Reductions				240
Ending balance		$ 0	[30]	205
Investment, Identifier [Axis]: Pinnacle TopCo, 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)		(14)
Amount of Interest, Fees or Dividends Credited to Income		945
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		28,640
Gross Additions		14
Gross Reductions		14
Ending balance		28,640
Investment, Identifier [Axis]: Pinnacle TopCo, LLC, ecured Debt 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[31]	0
Investment, Identifier [Axis]: Power System Solutions, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	3,800
Ending balance	[20]	$ 4,130
Investment, Identifier [Axis]: Power System Solutions, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.50%	[20],[25],[27],[30]		6.50%	[18],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	$ (63)
Ending balance	[20],[25],[30]	$ (59)
Investment, Identifier [Axis]: Power System Solutions, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.82%	[20],[25]		10.86%	[18],[26]
Spread		6.50%	[20],[25],[27]		6.50%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 6,124
Ending balance	[20],[25]	$ 6,109
Investment, Identifier [Axis]: Power System Solutions, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.82%	[20],[25]		10.90%	[18],[26]
Spread		6.50%	[20],[25],[27]		6.50%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 18,233
Ending balance	[20],[25]	$ 18,187
Investment, Identifier [Axis]: PrimeFlight Aviation Services, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.58%	[20],[25],[41]		10.58%	[18],[26]
Spread		5.50%	[20],[25],[27],[41]		5.50%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 7,880
Ending balance	[20],[25],[41]	$ 7,860
Investment, Identifier [Axis]: PrimeFlight Aviation Services, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		9.83%	[20],[25],[41]		9.83%	[18],[26]
Spread		5.50%	[20],[25],[27],[41]		5.50%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 752
Ending balance	[20],[25],[41]	$ 750
Investment, Identifier [Axis]: PrimeFlight Aviation Services, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		9.83%	[20],[25],[41]		9.83%	[18],[26]
Spread		5.50%	[20],[25],[27],[41]		5.50%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 756
Ending balance	[20],[25],[41]	$ 754
Investment, Identifier [Axis]: PrimeFlight Aviation Services, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		9.83%	[20],[25],[41]		9.58%	[18],[26]
Spread		5.25%	[20],[25],[27],[41]		5.25%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 859
Ending balance	[20],[25],[41]	$ 857
Investment, Identifier [Axis]: PrimeFlight Aviation Services, Secured Debt 5
Schedule of Investments [Line Items]
Total Rate	[20],[25],[41]	9.54%
Spread	[20],[25],[27],[41]	5.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25],[41]	$ 1,900
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		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)		20		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		510
Gross Additions		20		0
Gross Reductions		0		0
Ending balance		620		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)		350		0
Amount of Interest, Fees or Dividends Credited to Income		327		246
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		12,600	[19]	10,750
Gross Additions		350		0
Gross Reductions		0		0
Ending balance		$ 12,950	[21]	$ 10,750
Investment, Identifier [Axis]: Principle Environmental, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		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		164		200
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,861		5,829
Gross Additions		4		6
Gross Reductions		0		0
Ending balance		4,865		5,835
Investment, Identifier [Axis]: Purge Rite, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	2,060
Ending balance	[20]	3,920
Investment, Identifier [Axis]: Purge Rite, LLC, Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	3,248
Ending balance	[20]	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		460
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		460		460
Investment, Identifier [Axis]: Quality Lease Service, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)				(3)
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
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
Investment, Identifier [Axis]: RA Outdoors (Aspira) LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.25%
Spread		6.75%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(20)
Amount of Interest, Fees or Dividends Credited to Income		40
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,257
Gross Additions		3
Gross Reductions		60
Ending balance		$ 1,200
Investment, Identifier [Axis]: RA Outdoors (Aspira) LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.25%
Spread		6.75%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(207)
Amount of Interest, Fees or Dividends Credited to Income		408
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		13,155
Gross Additions		11
Gross Reductions		621
Ending balance		12,545
Investment, Identifier [Axis]: RA Outdoors LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[39]	0
Ending balance	[20]	$ 0
Investment, Identifier [Axis]: RA Outdoors LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.25%	[20],[25]		11.74%	[18],[26],[39]
Spread		6.75%	[20],[25],[27]		6.75%	[18],[26],[28],[39]
PIK Rate	[15],[18],[26],[39]				11.74%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[39]	$ 1,257
Ending balance	[20],[25]	$ 1,200
Investment, Identifier [Axis]: RA Outdoors LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[18],[26],[39]				11.74%
Spread		6.75%	[20],[25],[27],[30]		6.75%	[18],[26],[28],[39]
PIK Rate	[15],[18],[26],[39]				11.74%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[39]	$ 13,155
Ending balance	[20],[25],[30]	$ 0
Investment, Identifier [Axis]: RA Outdoors LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[20],[25]	11.25%
Spread	[20],[25],[27]	6.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 12,545
Investment, Identifier [Axis]: Richardson Sales Solutions, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[18],[26],[34]				11.22%
Spread		6.50%	[20],[24],[25],[27],[30]		6.75%	[18],[26],[28],[34]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[34]	$ 3,517
Ending balance	[20],[24],[25],[30]	$ 0
Investment, Identifier [Axis]: Richardson Sales Solutions, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.80%	[20],[25]		11.38%	[18],[26]
Spread		6.50%	[20],[25],[27]		6.75%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 34,046
Ending balance	[20],[25]	$ 33,827
Investment, Identifier [Axis]: Richardson Sales Solutions, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.79%	[20],[25]		11.43%	[18],[26]
Spread		6.50%	[20],[25],[27]		6.75%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 22,101
Ending balance	[20],[25]	21,962
Investment, Identifier [Axis]: River Aggregates, 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		9,530	[35]	3,710
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		9,530	[36]	3,710
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		0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0		$ 0
Investment, Identifier [Axis]: Robbins Bros. Jewelry, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				12.50%
PIK Rate		10.00%	[13],[14],[30]		10.00%	[15],[29],[31]
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)	[29],[31]	(26)
Gross Additions		0		2
Gross Reductions		6		0
Ending balance		$ (45)	[14],[30]	$ (24)
Investment, Identifier [Axis]: Robbins Bros. Jewelry, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%	[14]	12.50%	12.50%	[29]
PIK Rate		10.00%	[13],[14]		10.00%	[15],[29]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		(5,999)
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	[29]	30,798
Gross Additions		0		20
Gross Reductions		210		6,449
Ending balance		$ 14,352	[14]	24,369
Investment, Identifier [Axis]: Roof Opco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		8.00%	[20],[25],[27],[30]		8.00%	[18],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	$ 0
Ending balance	[20],[25],[30]	$ 0
Investment, Identifier [Axis]: Roof Opco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.57%	[20],[25]		11.85%	[18],[26]
Spread		7.00%	[20],[25],[27]		7.00%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 3,071
Ending balance	[20],[25]	$ 3,078
Investment, Identifier [Axis]: Roof Opco, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		13.57%	[20],[25]		13.85%	[18],[26]
Spread		9.00%	[20],[25],[27]		9.00%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 3,052
Ending balance	[20],[25]	$ 3,058
Investment, Identifier [Axis]: Rug Doctor, LLC., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.49%	[20],[25]		12.52%	[18],[26]
Spread		8.00%	[20],[25],[27]		8.00%	[18],[26],[28]
PIK Rate		2.00%	[13],[20],[25]		2.00%	[15],[18],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 5,888
Ending balance	[20],[25]	$ 5,917
Investment, Identifier [Axis]: Rug Doctor, LLC., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.49%	[20],[25]		12.52%	[18],[26]
Spread		8.00%	[20],[25],[27]		8.00%	[18],[26],[28]
PIK Rate		2.00%	[13],[20],[25]		2.00%	[15],[18],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 7,449
Ending balance	[20],[25]	7,278
Investment, Identifier [Axis]: SI East, LLC, Preferred 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				117
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				19,170
Gross Additions				0
Gross Reductions				0
Ending balance				$ 19,170
Investment, Identifier [Axis]: SI East, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate				12.45%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(14)
Amount of Interest, Fees or Dividends Credited to Income				1,730
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				54,536
Gross Additions				14
Gross Reductions				14
Ending balance				$ 54,536
Investment, Identifier [Axis]: SI East, LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19]	13,660
Investment, Identifier [Axis]: SI East, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0
Amount of Unrealized Gain/(Loss)		(1,190)
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		13,660
Gross Additions		0
Gross Reductions		1,190
Ending balance	[21]	$ 12,470
Investment, Identifier [Axis]: SI East, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate				11.25%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(1)
Amount of Interest, Fees or Dividends Credited to Income				39
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				1,125
Gross Additions				1
Gross Reductions				1
Ending balance				1,125
Investment, Identifier [Axis]: SI East, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.75%			11.75%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(1)
Amount of Interest, Fees or Dividends Credited to Income		72
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,250
Gross Additions		1
Gross Reductions		1
Ending balance		$ 2,250
Investment, Identifier [Axis]: SI East, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.82%	[59]		12.79%	[60]
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(4)
Amount of Interest, Fees or Dividends Credited to Income		2,172
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[60]	67,661
Gross Additions		4
Gross Reductions		4
Ending balance	[59]	67,661
Investment, Identifier [Axis]: SPAU Holdings, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	610
Ending balance	[20]	$ 690
Investment, Identifier [Axis]: SPAU Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[20],[24],[25]	11.96%
Spread		7.50%	[20],[24],[25],[27]		7.50%	[18],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	$ 0
Ending balance	[20],[24],[25]	$ 1,405
Investment, Identifier [Axis]: SPAU Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.95%	[20],[25]		11.98%	[18],[26]
Spread		7.50%	[20],[25],[27]		7.50%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 15,569
Ending balance	[20],[25]	15,529
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)		(550)		(74)
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	[19]	2,310
Gross Additions		0		0
Gross Reductions		550		530
Ending balance		$ 1,890	[21]	$ 1,780
Investment, Identifier [Axis]: Slick Innovations, 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)				108
Amount of Interest, Fees or Dividends Credited to Income				548
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 16,320		11,440
Gross Additions				7,600
Gross Reductions				160
Ending balance		25,880		18,880
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)		(139)
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
Investment, Identifier [Axis]: Slick Innovations, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		282
Amount of Interest, Fees or Dividends Credited to Income		441
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0
Gross Additions		25,880
Gross Reductions		0
Ending balance		25,880
Investment, Identifier [Axis]: South Coast Terminals Holdings, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	885
Ending balance	[20]	$ 885
Investment, Identifier [Axis]: South Coast Terminals Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		5.25%	[20],[25],[27],[30]		5.25%	[18],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	$ 0
Ending balance	[20],[25],[30]	$ 0
Investment, Identifier [Axis]: South Coast Terminals Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		9.67%	[20],[25]		9.71%	[18],[26]
Spread		5.25%	[20],[25],[27]		5.25%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 53,320
Ending balance	[20],[25]	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	[18]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[20]	$ 0
Investment, Identifier [Axis]: Student Resource Center, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate				8.50%
PIK Rate				8.50%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(1,457)
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				1,457
Ending balance				1,733
Investment, Identifier [Axis]: Student Resource Center, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[20]	8.50%
PIK Rate	[13],[20]	8.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20]	$ 882
Investment, Identifier [Axis]: Student Resource Center, LLC, Secured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		8.50%
PIK Rate		8.50%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		(744)
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		744
Ending balance		$ 900
Investment, Identifier [Axis]: Student Resource Center, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		8.50%	[14],[20]		8.50%	[18],[29]
PIK Rate		8.50%	[13],[14],[20]		8.50%	[15],[18],[29]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[29]	$ 1,644
Ending balance	[14],[20]	$ 900
Investment, Identifier [Axis]: Student Resource Center, LLC, Secured Debt 2.1
Schedule of Investments [Line Items]
Total Rate		8.50%
PIK Rate		8.50%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		673
Amount of Interest, Fees or Dividends Credited to Income		4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		204
Gross Additions		678
Gross Reductions		0
Ending balance		882
Investment, Identifier [Axis]: Student Resource Center, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[18]				8.50%
PIK Rate	[15],[18]				8.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	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)		3,870		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		10,530		5,940
Gross Additions		3,870		1
Gross Reductions		0		0
Ending balance		$ 14,400		$ 5,941
Investment, Identifier [Axis]: Superior Rigging & Erecting Co., Secured Debt
Schedule of Investments [Line Items]
Total Rate				12.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				633
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				20,427
Gross Additions				11
Gross Reductions				0
Ending balance				20,438
Investment, Identifier [Axis]: TEC Services, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[20],[25]	10.14%
Spread		5.75%	[20],[25],[27]		5.75%	[18],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	$ (125)
Ending balance	[20],[25]	$ 1,264
Investment, Identifier [Axis]: TEC Services, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Spread		5.75%	[20],[25],[27],[30]		5.75%	[18],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	$ (94)
Ending balance	[20],[25],[30]	$ (68)
Investment, Identifier [Axis]: TEC Services, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.13%	[20],[25]		10.13%	[18],[26]
Spread		5.75%	[20],[25],[27]		5.75%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 41,709
Ending balance	[20],[25]	$ 31,527
Investment, Identifier [Axis]: Team Public Choices, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		9.55%	[12]		9.65%	[11]
Spread		5.00%	[12],[27]		5.00%	[11],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11]	$ 14,781
Ending balance	[12]	14,291
Investment, Identifier [Axis]: Tectonic Financial, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19]	4,720
Ending balance	[21]	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		0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		0		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		0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		0		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		0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0		$ 0
Investment, Identifier [Axis]: Tedder Industries, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.00%	[14],[22]	12.00%	12.00%	[23],[29]
PIK Rate		12.00%	[13],[14],[22]		12.00%	[15],[23],[29]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(92)		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	[23],[29]	1,726
Gross Additions		0		0
Gross Reductions		91		0
Ending balance		$ 1,555	[14],[22]	$ 1,726
Investment, Identifier [Axis]: Tedder Industries, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%	[14],[22]	12.00%	12.00%	[23],[29]
PIK Rate		12.00%	[13],[14],[22]		12.00%	[15],[23],[29]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		(396)		(6,323)
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	[23],[29]	14,262
Gross Additions		0		0
Gross Reductions		396		6,323
Ending balance		3,207	[14],[22]	7,939
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		(1,415)
Amount of Interest, Fees or Dividends Credited to Income		0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,252		4,734
Gross Additions		769		0
Gross Reductions		0		1,415
Ending balance		5,021		3,319
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		1,794
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		1,794		1,794
Investment, Identifier [Axis]: Tex Tech Tennis, LLC, Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[35]	2,290
Ending balance	[20],[36]	2,290
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		51
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
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
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				26
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		287	[19]	6,400
Gross Additions				0
Gross Reductions				0
Ending balance		313	[21]	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	[19]	172
Gross Additions				64
Gross Reductions				0
Ending balance		$ 6,400	[21]	$ 236
Investment, Identifier [Axis]: The Affiliati Network, LLC, SF, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.00%
Amount of Realized Gain/(Loss)		$ 0
Amount of Unrealized Gain/(Loss)		51
Amount of Interest, Fees or Dividends Credited to Income		133
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,053
Gross Additions		54
Gross Reductions		0
Ending balance		$ 5,107
Investment, Identifier [Axis]: The Affiliati Network, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.00%		13.00%	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		12		5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		394		150
Gross Additions		1,281		641
Gross Reductions		1,560		800
Ending balance		$ 115		$ (9)
Investment, Identifier [Axis]: The Affiliati Network, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.00%		13.00%	10.00%
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		$ 5,053		7,347
Gross Additions				7
Gross Reductions				401
Ending balance		$ 5,107		6,953
Investment, Identifier [Axis]: Titan Meter Midco Corp., Preferred Equity
Schedule of Investments [Line Items]
Total Rate		8.00%	[20]		8.00%	[18]
PIK Rate		8.00%	[13],[20]		8.00%	[15],[18]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	$ 1,400
Ending balance	[20]	$ 1,400
Investment, Identifier [Axis]: Titan Meter Midco Corp., Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.50%	[20],[25],[27],[30]		6.50%	[18],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	$ (105)
Ending balance	[20],[25],[30]	$ (99)
Investment, Identifier [Axis]: Titan Meter Midco Corp., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.80%	[20],[25]		10.83%	[18],[26]
Spread		6.50%	[20],[25],[27]		6.50%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 33,927
Ending balance	[20],[25]	$ 33,841
Investment, Identifier [Axis]: Titan Meter Midco Corp., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[20],[25]	10.80%
Spread	[20],[25],[27]	6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 4,330
Investment, Identifier [Axis]: Total Control investments, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		22
Amount of Unrealized Gain/(Loss)		401
Amount of Interest, Fees or Dividends Credited to Income		56,242
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,087,890
Gross Additions		141,679
Gross Reductions		56,613
Ending balance		2,172,956
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)				(1,130)
Amount of Interest, Fees or Dividends Credited to Income				29
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		8,570	[19]	12,740
Gross Additions				0
Gross Reductions				1,130
Ending balance		8,570	[21]	$ 11,610
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				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		1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		(1)	[31]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ (1)	[30]	$ 0
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.50%		13.50%	13.50%
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		77
Amount of Interest, Fees or Dividends Credited to Income		274		252
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		7,855		7,920
Gross Additions		7		0
Gross Reductions		0		0
Ending balance		7,862		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)		0
Amount of Interest, Fees or Dividends Credited to Income		29
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		8,570
Gross Additions		0
Gross Reductions		0
Ending balance		$ 8,570
Investment, Identifier [Axis]: U.S. TelePacific Corp., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.90%	[12],[14],[25]		11.90%	[11],[26],[29]
Spread		7.40%	[12],[14],[25],[27]		7.40%	[11],[26],[28],[29]
PIK Rate		6.00%	[12],[13],[14],[25]		6.00%	[11],[15],[26],[29]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11],[26],[29]	$ 3,910
Ending balance	[12],[14],[25]	3,930
Investment, Identifier [Axis]: U.S. TelePacific Corp., Secured Debt 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11],[29]	0
Ending balance	[12],[14]	0
Investment, Identifier [Axis]: UPS Intermediate, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	1,443
Ending balance	[20]	$ 1,350
Investment, Identifier [Axis]: UPS Intermediate, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		10.57%	[20],[25]		10.36%	[18],[26]
Spread		6.25%	[20],[25],[27]		6.00%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 42,904
Ending balance	[20],[25]	42,505
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	[11]	0
Gross Additions				0
Gross Reductions				0
Ending balance		0	[12]	$ 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
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 1
Schedule of Investments [Line Items]
Total Rate		20.00%	[12]	20.00%
PIK Rate		20.00%	[12],[13]	20.00%
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				2,833
Gross Additions				132
Gross Reductions				0
Ending balance		$ 10,176	[12]	$ 2,965
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 1.1
Schedule of Investments [Line Items]
PIK Rate		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		3,182
Gross Additions		1,632
Gross Reductions		4,814
Ending balance		$ 0
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 2
Schedule of Investments [Line Items]
Total Rate		19.00%	[12]	20.00%	20.00%	[11]
PIK Rate		19.00%	[12],[13]	20.00%	20.00%	[11],[15]
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		$ 4,272	[11]	3,698
Gross Additions				0
Gross Reductions				0
Ending balance		$ 0	[12]	$ 3,698
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 2.1.1
Schedule of Investments [Line Items]
Total Rate		20.00%
PIK Rate		20.00%
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		4,272
Gross Additions		5,904
Gross Reductions		0
Ending balance		$ 10,176
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 3
Schedule of Investments [Line Items]
Total Rate		13.50%	[12]	19.00%	19.00%	[11]
PIK Rate		13.50%	[12],[13]	19.00%	19.00%	[11],[15]
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	[11]	0
Gross Additions				0
Gross Reductions				0
Ending balance		$ 0	[12]	$ 0
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 3.1
Schedule of Investments [Line Items]
Total Rate		19.00%
PIK Rate		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
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 4
Schedule of Investments [Line Items]
Total Rate				13.50%	13.50%	[11]
PIK Rate				13.50%	13.50%	[11],[15]
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	[11]	0
Gross Additions				0
Gross Reductions				0
Ending balance				$ 0
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 4.1
Schedule of Investments [Line Items]
Total Rate		13.50%
PIK Rate		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
Investment, Identifier [Axis]: UniTek Global Services, Inc., Secured Convertible Debt 1
Schedule of Investments [Line Items]
Total Rate				15.00%	15.00%	[11]
PIK Rate				15.00%	15.00%	[11],[15]
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				64
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 5,642	[11]	3,889
Gross Additions				65
Gross Reductions				0
Ending balance				$ 3,954
Investment, Identifier [Axis]: UniTek Global Services, Inc., Secured Convertible Debt 1.1
Schedule of Investments [Line Items]
PIK Rate		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		504
Gross Reductions		6,146
Ending balance		0
Investment, Identifier [Axis]: UniTek Global Services, Inc., Secured Convertible Debt 2
Schedule of Investments [Line Items]
Total Rate				15.00%	15.00%	[11]
PIK Rate				15.00%	15.00%	[11],[15]
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				32
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 2,663	[11]	1,908
Gross Additions				32
Gross Reductions				0
Ending balance				1,940
Investment, Identifier [Axis]: UniTek Global Services, Inc., Secured Convertible Debt 2.1
Schedule of Investments [Line Items]
PIK Rate		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		2,662
Gross Additions		236
Gross Reductions		2,898
Ending balance		0
Investment, Identifier [Axis]: UniTek Global Services, Inc.,Preferred Stock 1
Schedule of Investments [Line Items]
Total Rate	[11],[19]				20.00%
PIK Rate	[11],[15],[19]				20.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11],[19]	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		168
Ending balance		4,564
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)				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	[39],[43],[44]	5,694
Gross Additions				0
Gross Reductions				0
Ending balance		4,564	[41],[45],[46]	5,694
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)		0
Amount of Interest, Fees or Dividends Credited to Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,612
Gross Additions		0
Gross Reductions		363
Ending balance		5,249
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)				0
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		5,612	[39],[43],[44]	2,838
Gross Additions				0
Gross Reductions				0
Ending balance		$ 5,249	[41],[45],[46]	2,838
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
Investment, Identifier [Axis]: Universal Wellhead Services Holdings, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Total Rate				14.00%
PIK Rate				14.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(50)
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				50
Ending balance				$ 100
Investment, Identifier [Axis]: Urgent DSO LLC, Preferred Equity
Schedule of Investments [Line Items]
Total Rate		9.00%	[21]	9.00%	9.00%	[19]
PIK Rate		9.00%	[13],[21]	9.00%	9.00%	[15],[19]
Amount of Realized Gain/(Loss)		$ 0		$ 0
Amount of Unrealized Gain/(Loss)		0		0
Amount of Interest, Fees or Dividends Credited to Income		95		45
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		4,320	[19]	0
Gross Additions		95		4,045
Gross Reductions		0		0
Ending balance		$ 4,415	[21]	$ 4,045
Investment, Identifier [Axis]: Urgent DSO LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		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		301		326
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		8,727		0
Gross Additions		4		8,713
Gross Reductions		0		0
Ending balance		$ 8,731		8,713
Investment, Identifier [Axis]: UserZoom Technologies, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.80%	[20],[25]		12.75%	[18],[26]
Spread		7.50%	[20],[25],[27]		7.50%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 4,000
Ending balance	[20],[25]	4,000
Investment, Identifier [Axis]: VORTEQ Coil Finishers, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[19]	2,640
Ending balance	[20],[21]	2,640
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		100
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		12,240	[19],[35]	12,240
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 12,240	[21],[36]	$ 12,240
Investment, Identifier [Axis]: VVS Holdco LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				11.48%
Spread		6.00%	[25],[27],[30]	6.00%	6.00%	[26],[28],[31]
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	[26],[31]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[25],[30]	$ 0
Investment, Identifier [Axis]: VVS Holdco LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		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		754		834
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		25,661		28,035
Gross Additions		13		14
Gross Reductions		0		0
Ending balance		$ 25,674		28,049
Investment, Identifier [Axis]: Veregy Consolidated, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.00%	[12],[25],[27],[30]		5.25%	[11],[26],[28],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11],[26],[31]	$ (185)
Ending balance	[12],[25],[30]	$ (130)
Investment, Identifier [Axis]: Veregy Consolidated, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.55%	[12],[25]		10.85%	[11],[26]
Spread		6.00%	[12],[25],[27]		6.00%	[11],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11],[26]	$ 17,681
Ending balance	[12],[25]	17,663
Investment, Identifier [Axis]: Victory Energy Operations, LLC, 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		6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		(33)
Gross Additions		2
Gross Reductions		0
Ending balance		(31)
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		116
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		22,686
Gross Additions		0
Gross Reductions		0
Ending balance	[21]	22,686
Investment, Identifier [Axis]: Victory Energy Operations, LLC, 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		1,592
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		47,792
Gross Additions		24
Gross Reductions		0
Ending balance		47,816
Investment, Identifier [Axis]: Victory Energy Operations, LLC, Secured Debt 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[31]	(33)
Ending balance	[30]	$ (31)
Investment, Identifier [Axis]: Victory Energy Operations, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%			13.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		$ 47,792
Ending balance		47,816
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
Investment, Identifier [Axis]: Vistar Media, Inc., Preferred Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	$ 4,676
Investment, Identifier [Axis]: Vitesse Systems, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.44%	[20]		11.55%	[18]
Spread		7.00%	[20],[27]		7.00%	[18],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	$ 5,795
Ending balance	[20]	$ 6,955
Investment, Identifier [Axis]: Vitesse Systems, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.44%	[20],[25]		11.47%	[18],[26]
Spread		7.00%	[20],[25],[27]		7.00%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 42,075
Ending balance	[20],[25]	41,969
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
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)		(1,528)
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		21
Gross Reductions		1,854
Ending balance		5,170
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		0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		0		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		0
Gross Additions				0
Gross Reductions				0
Ending balance		5,170		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)				1,015
Amount of Interest, Fees or Dividends Credited to Income				0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		0		7,250
Gross Additions				1,015
Gross Reductions				1,015
Ending balance		0		7,250
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		0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0		$ 0
Investment, Identifier [Axis]: Volusion, LLC, Secured Debt
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		0
Amount of Interest, Fees or Dividends Credited to Income		52		53
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		2,100		2,100
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		2,100		2,100
Investment, Identifier [Axis]: Wall Street Prep, Inc., Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	1,210
Investment, Identifier [Axis]: Wall Street Prep, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread	[18],[26],[28],[31]				7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[31]	(2)
Investment, Identifier [Axis]: Wall Street Prep, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[18],[26]				11.74%
Spread	[18],[26],[28]				7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 1,759
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.00%	[20]		12.00%	[18]
PIK Rate		4.00%	[13],[20]		4.00%	[15],[18]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	$ 2,142
Ending balance	[20]	$ 2,156
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%	[20]		12.00%	[18]
PIK Rate		4.00%	[13],[20]		4.00%	[15],[18]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	$ 369
Ending balance	[20]	$ 372
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.00%	[20]		12.00%	[18]
PIK Rate		4.00%	[13],[20]		4.00%	[15],[18]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	$ 15,227
Ending balance	[20]	$ 15,324
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		12.00%	[20]		12.00%	[18]
PIK Rate		4.00%	[13],[20]		4.00%	[15],[18]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18]	$ 12,180
Ending balance	[20]	12,257
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[19]	4,920
Ending balance	[20],[21]	$ 4,920
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		9.32%	[20],[25],[54]		9.47%	[18],[26],[55]
Spread		5.00%	[20],[25],[27],[54]		5.00%	[18],[26],[28],[55]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[55]	$ 2,381
Ending balance	[20],[25],[54]	$ 2,374
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		9.32%	[20],[25]		9.60%	[18],[26]
Spread		5.00%	[20],[25],[27]		5.00%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 10,550
Ending balance	[20],[25]	$ 10,523
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		9.32%	[20],[25]		9.60%	[18],[26]
Spread		5.00%	[20],[25],[27]		5.00%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 5,250
Ending balance	[20],[25]	$ 5,237
Investment, Identifier [Axis]: Winter Services LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.56%	[20],[24],[25]		12.81%	[18],[26],[34]
Spread		8.00%	[20],[24],[25],[27]		8.00%	[18],[26],[28],[34]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26],[34]	$ 2,138
Ending balance	[20],[24],[25]	$ 2,618
Investment, Identifier [Axis]: Winter Services LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.57%	[20],[25]		12.85%	[18],[26]
Spread		8.00%	[20],[25],[27]		8.00%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 1,821
Ending balance	[20],[25]	$ 1,840
Investment, Identifier [Axis]: Winter Services LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.57%	[20],[25]		11.85%	[18],[26]
Spread		7.00%	[20],[25],[27]		7.00%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 7,035
Ending balance	[20],[25]	$ 7,108
Investment, Identifier [Axis]: Winter Services LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		13.57%	[20],[25]		13.85%	[18],[26]
Spread		9.00%	[20],[25],[27]		9.00%	[18],[26],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 7,035
Ending balance	[20],[25]	7,108
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		22		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		3,845	[19]	3,845
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 3,845	[21]	$ 3,845
Investment, Identifier [Axis]: World Micro Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.00%		12.00%	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		299		374
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		10,702		12,028
Gross Additions		11		6
Gross Reductions		879		0
Ending balance		$ 9,834		12,034
Investment, Identifier [Axis]: Xenon Arc, Inc. Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[20],[25]	9.65%
Spread	[20],[25],[27]	5.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 23,753
Investment, Identifier [Axis]: Xenon Arc, Inc. Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[20],[25]	9.64%
Spread	[20],[25],[27]	5.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 37,346
Investment, Identifier [Axis]: Xenon Arc, Inc. Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[20],[25]	10.15%
Spread	[20],[25],[27]	5.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 10,632
Investment, Identifier [Axis]: Xenon Arc, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[18],[26]				9.70%
Spread	[18],[26],[28]				5.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	23,814
Investment, Identifier [Axis]: Xenon Arc, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[18],[26]				9.98%
Spread	[18],[26],[28]				5.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 37,442
Investment, Identifier [Axis]: YS Garments, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.90%	[12],[25]		12.25%	[11],[26],[55]
Spread		7.50%	[12],[25],[27]		7.50%	[11],[26],[28],[55]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[11],[26],[55]	$ 9,949
Ending balance	[12],[25]	$ 9,409
Investment, Identifier [Axis]: ZRG Partners, LLC Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[20],[25]	12.50%
Spread	[20],[25],[27]	5.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 5,558
Investment, Identifier [Axis]: ZRG Partners, LLC Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[20],[25],[54]	10.27%
Spread	[20],[25],[27],[54]	6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25],[54]	$ 8,039
Investment, Identifier [Axis]: ZRG Partners, LLC Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[20],[25]	10.28%
Spread	[20],[25],[27]	6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 6,551
Investment, Identifier [Axis]: ZRG Partners, LLC Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[20],[25]	10.30%
Spread	[20],[25],[27]	6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[25]	$ 46,917
Investment, Identifier [Axis]: ZRG Partners, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[18],[26]				12.50%
Spread	[18],[26],[28]				5.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	695
Investment, Identifier [Axis]: ZRG Partners, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[18],[26]				10.74%
Spread	[18],[26],[28]				6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	4,158
Investment, Identifier [Axis]: ZRG Partners, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[18],[26]				10.28%
Spread	[18],[26],[28]				6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	6,568
Investment, Identifier [Axis]: ZRG Partners, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[18],[26]				10.66%
Spread	[18],[26],[28]				6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	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)		(160)		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		0
Gross Additions		0		0
Gross Reductions		160		0
Ending balance		$ 160		$ 0
Investment, Identifier [Axis]: Ziegler’s NYPD, 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		54
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance		1,750
Gross Additions		0
Gross Reductions		0
Ending balance		1,750
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				12.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				14
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				450
Gross Additions				0
Gross Reductions				0
Ending balance				$ 450
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				6.50%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				0
Amount of Interest, Fees or Dividends Credited to Income				16
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				945
Gross Additions				0
Gross Reductions				0
Ending balance				$ 945
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate				14.00%
Amount of Realized Gain/(Loss)				$ 0
Amount of Unrealized Gain/(Loss)				(113)
Amount of Interest, Fees or Dividends Credited to Income				97
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance				2,080
Gross Additions				0
Gross Reductions				113
Ending balance				1,967
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	[16]	0
Gross Additions		0		0
Gross Reductions		0		0
Ending balance		$ 0	[17]	$ 0
Investment, Identifier [Axis]: Zips Car Wash, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.70%	[20],[25]		11.91%	[18],[26]
Spread		7.25%	[20],[25],[27]		7.25%	[18],[26],[28]
PIK Rate	[15],[18],[26]				11.91%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 14,852
Ending balance	[20],[25]	$ 966
Investment, Identifier [Axis]: Zips Car Wash, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.70%	[20],[25]		11.91%	[18],[26]
Spread		7.25%	[20],[25],[27]		7.25%	[18],[26],[28]
PIK Rate	[15],[18],[26]				11.91%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[18],[26]	$ 3,723
Ending balance	[20],[25]	$ 1,690
Investment, Identifier [Axis]: Zips Car Wash, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[14],[20],[22],[25]	11.91%
Spread	[14],[20],[22],[25],[27]	7.25%
PIK Rate	[13],[14],[20],[22],[25]	11.91%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[14],[20],[22],[25]	$ 11,318
Investment, Identifier [Axis]: Zips Car Wash, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[14],[20],[22],[25]	11.91%
Spread	[14],[20],[22],[25],[27]	7.25%
PIK Rate	[13],[14],[20],[22],[25]	11.91%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[14],[20],[22],[25]	$ 2,837
[1] All portfolio company headquarters are based in the United States, unless otherwise noted. [2] All investments are Lower Middle Market portfolio investments, unless otherwise noted. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Lower Middle Market portfolio investments. All of the Company’s investments, unless otherwise noted, are encumbered either as security for the Company’s Corporate Facility or SPV Facility (each as defined in Note B.5. — Summary of Significant Accounting Policies —Deferred Financing Costs, and together the “Credit Facilities”) or in support of the SBA-guaranteed debentures issued by the Funds. [3] All portfolio company headquarters are based in the United States, unless otherwise noted. [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] All investments are Lower Middle Market portfolio investments, unless otherwise noted. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Lower Middle Market portfolio investments. All of the Company’s investments, unless otherwise noted, are encumbered either as security for the Company’s Corporate Facility or SPV Facility (each as defined in Note B.5. — Summary of Significant Accounting Policies —Deferred Financing Costs, and together the “Credit Facilities”) or in support of the SBA-guaranteed debentures issued by the Funds. [6] 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. [7] Control investments are defined by the 1940 Act as investments in which more than 25% of the voting securities are owned or where the ability to nominate greater than 50% of the board representation is maintained. [8] Control investments are defined by the 1940 Act as investments in which more than 25% of the voting securities are owned or where the ability to nominate greater than 50% of the board representation is maintained. [9] Affiliate investments are defined by the 1940 Act as investments in which between 5% and 25% (inclusive) of the voting securities are owned and the investments are not classified as Control investments. [10] Affiliate investments are defined by the 1940 Act as investments in which between 5% and 25% (inclusive) of the voting securities are owned and the investments are not classified as Control investments. [11] Middle Market portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Middle Market portfolio investments. [12] Middle Market portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Middle Market portfolio investments. [13] 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 March 31, 2025. [14] Non-accrual and non-income producing debt investment. [15] 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 December 31, 2024. [16] Warrants are presented in equivalent shares/units with a strike price of $0.01 per share/unit. [17] (27)Warrants are presented in equivalent shares/units with a strike price of $0.01 per share/unit. [18] Private Loan portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Private Loan portfolio investments. [19] Income producing through dividends or distributions. [20] Private Loan portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Private Loan portfolio investments. [21] Income producing through dividends or distributions. [22] Maturity date is under on-going negotiations with the portfolio company and other lenders, if applicable. [23] Maturity date is under on-going negotiations with the portfolio company and other lenders, if applicable. [24] RLOC 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 March 31, 2025. [25] 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 Secured Overnight Financing Rate (“SOFR”) floors which range between 0.50% and 5.25%, with a weighted-average floor of 1.32%. [26] 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%. [27] A majority of the variable rate loans in the Company’s Investment Portfolio (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 March 31, 2025, SOFR based contracts in the portfolio had Adjustments ranging from 0.10% to 0.26%. [28] A majority of the variable rate loans in the Company’s Investment Portfolio (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 December 31, 2024, SOFR based contracts in the portfolio had Adjustments ranging from 0.10% to 0.26%. [29] Non-accrual and non-income producing debt investment. [30] The position is unfunded and no interest income is being earned as of March 31, 2025. The position may earn a nominal unused facility fee on committed amounts. [31] 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. [32] (33)Index based floating interest rate is subject to contractual maximum base rate of 3.00%. [33] Index based floating interest rate is subject to contractual maximum base rate of 3.00%. [34] RLOC 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. [35] Shares/Units represent ownership in a related Real Estate or HoldCo entity. [36] (29)Shares/Units represent ownership in a related Real Estate or HoldCo entity. [37] 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. [38] 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. [39] 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. [40] Portfolio company headquarters are located outside of the United States. [41] 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. [42] Portfolio company headquarters are located outside of the United States. [43] Investment is not unitized. Presentation is made in percent of fully diluted ownership unless otherwise indicated. [44] Other Portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Other Portfolio investments. [45] (30)Investment is not unitized. Presentation is made in percent of fully diluted ownership unless otherwise indicated. [46] Other Portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Other Portfolio investments. [47] Effective yield as of December 31, 2024 was approximately 4.43% on the Dreyfus Government Cash Management. [48] (36)Effective yield as of March 31, 2025 was approximately 4.22% on the Dreyfus Government Cash Management. [49] Effective yield as of March 31, 2025 was approximately 3.98% on the Fidelity Government Fund. [50] Effective yield as of December 31, 2024 was approximately 4.10% on the Fidelity Treasury. [51] (31)Effective yield as of March 31, 2025 was approximately 3.96% on the Fidelity Treasury. [52] (34)Index based floating interest rate is subject to contractual maximum base rate of 4.00%. [53] Index based floating interest rate is subject to contractual maximum base rate of 1.50%. [54] 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 March 31, 2025. [55] 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. [56] Investment is accruing income at the fixed cash rate of 2.50% as of March 31, 2025. [57] External Investment Manager. Investment is not encumbered as security for the Company's Credit Facilities or in support of the SBA-guaranteed debentures issued by the Funds. [58] External Investment Manager. Investment is not encumbered as security for the Company's Credit Facilities or in support of the SBA-guaranteed debentures issued by the Funds. [59] 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. [60] 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.