Main Street Capital Corporation Quarterly report pursuant to Section 13 or 15(d)

Quarterly report pursuant to Section 13 or 15(d)

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

Consolidated Schedule of Investments In and Advances to Affiliates (Details) - USD ($) $ in Thousands		3 Months Ended			9 Months Ended
		Sep. 30, 2024		Sep. 30, 2023	Sep. 30, 2024		Sep. 30, 2023	Dec. 31, 2023
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		$ 26,382		$ 664	$ 17,429		$ (103,223)
Amount of Unrealized Gain/(Loss)		21,738		27,011	85,431		167,070
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[1]				4,286,271
Ending balance	^[2]	4,911,054			4,911,054
Control investments
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		0		546	(352)		(50,532)
Amount of Unrealized Gain/(Loss)		50,348		29,838	88,007		122,779
Amount of Interest, Fees or Dividends Credited to Income					152,572		145,485
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,006,698	^[1],[3]	1,703,172
Gross Additions					358,982		419,339
Gross Reductions					202,589		210,406
Ending balance		2,104,576	^[2],[4]	1,927,019	2,104,576	^[2],[4]	1,927,019
Affiliate investments
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		32		(228)	786		(16,495)
Amount of Unrealized Gain/(Loss)		7,181		5,188	22,609		26,859
Amount of Interest, Fees or Dividends Credited to Income					61,813		53,722
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					615,002	^[1],[5]	618,359
Gross Additions					340,196		191,033
Gross Reductions					242,905		228,536
Ending balance		784,092	^[2],[6]	565,942	784,092	^[2],[6]	565,942
Investment, Identifier [Axis]: 2717 MH, L.P., LP Interests (2717 GRE-LP, L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					441
Gross Reductions					0
Ending balance		441			441
Investment, Identifier [Axis]: 2717 MH, L.P., LP Interests (2717 HPP-MS, L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					60		67
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					315		248
Gross Additions					60		67
Gross Reductions					0		0
Ending balance		375		315	375		315
Investment, Identifier [Axis]: 2717 MH, L.P., LP Interests (2717 MH, L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					57		2,222
Amount of Unrealized Gain/(Loss)					2,846		(1,106)
Amount of Interest, Fees or Dividends Credited to Income					278		141
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					6,050		7,552
Gross Additions					2,903		2,796
Gross Reductions					57		4,452
Ending balance		8,896		5,896	8,896		5,896
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)					229		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					996		0
Gross Additions					230		750
Gross Reductions					0		0
Ending balance		1,226		750	1,226		750
Investment, Identifier [Axis]: AAC Holdings, 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	^[7]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0	^[8]	$ 0	$ 0	^[8]	$ 0
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		18.00%	^[8]	18.00%	18.00%	^[8]	18.00%	18.00%	^[7]
PIK Rate		18.00%	^[8]	18.00%	18.00%	^[8]	18.00%	18.00%	^[7]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(2)		(20)
Amount of Interest, Fees or Dividends Credited to Income					67		46
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					418	^[7]	0
Gross Additions					82		394
Gross Reductions					2		15
Ending balance		$ 498	^[8]	$ 379	$ 498	^[8]	$ 379
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		18.00%	^[8]	18.00%	18.00%	^[8]	18.00%	18.00%	^[7]
PIK Rate		18.00%	^[8]	18.00%	18.00%	^[8]	18.00%	18.00%	^[7]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(46)		(671)
Amount of Interest, Fees or Dividends Credited to Income					2,164		1,739
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					13,895	^[7]	11,550
Gross Additions					2,678		1,739
Gross Reductions					46		671
Ending balance		$ 16,527	^[8]	$ 12,618	16,527	^[8]	12,618
Investment, Identifier [Axis]: AAC Holdings, 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	^[7],[9]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		0	^[8],[10]	0	0	^[8],[10]	0
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 1
Schedule of Investments [Line Items]
Spread	^{[11],[12],[13]}							5.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[11],[12],[13]}				0
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	^[11],[13]							11.43%
Spread	^[11],[13]							6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11],[13]				1,921
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	^[11],[13]							11.43%
Spread	^[11],[13]							6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11],[13]				19,817
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	^[11],[13]							11.43%
Spread	^[11],[13]							6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11],[13]				1,372
Investment, Identifier [Axis]: ADS Tactical, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate	^[7],[13]							11.22%
Spread	^[7],[13]							5.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[7],[13]				10,860
Investment, Identifier [Axis]: AFG Capital Group, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							7,200
Amount of Unrealized Gain/(Loss)							(8,200)
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							9,400
Gross Additions							7,200
Gross Reductions							16,600
Ending balance				0			0
Investment, Identifier [Axis]: AMEREQUIP LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11],[14]				2,120
Ending balance	^[15],[16]	980			980
Investment, Identifier [Axis]: AMEREQUIP LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread	^{[11],[12],[13]}							7.40%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[11],[12],[13]}				(108)
Investment, Identifier [Axis]: AMEREQUIP LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	^[11],[13]							12.76%
Spread	^[11],[13]							7.40%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11],[13]				28,422
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)					(100)		(700)
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					100		800
Gross Additions					0		0
Gross Reductions					100		700
Ending balance		0		100	0		100
Investment, Identifier [Axis]: ASC Interests, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(196)		88
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					266		0
Gross Additions					0		250
Gross Reductions					196		0
Ending balance		$ 70		$ 250	$ 70		$ 250
Investment, Identifier [Axis]: ASC Interests, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.00%	^[17]	13.00%	13.00%	^[17]	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					40		40
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					400		400
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 400	^[17]	$ 400	$ 400	^[17]	$ 400
Investment, Identifier [Axis]: ASC Interests, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%	^[17]	13.00%	13.00%	^[17]	13.00%	13.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		(53)
Amount of Interest, Fees or Dividends Credited to Income					164		163
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,597		1,649
Gross Additions					1		1
Gross Reductions					0		53
Ending balance		$ 1,598	^[17]	$ 1,597	1,598	^[17]	1,597
Investment, Identifier [Axis]: ATS Operating, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11]				670
Ending balance	^[15]	$ 720			$ 720
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.59%	^[15],[18]		11.59%	^[15],[18]		12.16%	^[11],[13]
Spread		6.00%	^[15],[18]		6.00%	^[15],[18]		6.50%	^[11],[13]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11],[13]				$ 360
Ending balance	^[15],[18]	$ 756			$ 756
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.59%	^[15],[18]		10.59%	^[15],[18]		11.16%	^[11],[13]
Spread		5.00%	^[15],[18]		5.00%	^[15],[18]		5.50%	^[11],[13]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11],[13]				$ 6,660
Ending balance	^[15],[18]	$ 6,660			$ 6,660
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.59%	^[15],[18]		12.59%	^[15],[18]		13.16%	^[11],[13]
Spread		7.00%	^[15],[18]		7.00%	^[15],[18]		7.50%	^[11],[13]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11],[13]				$ 6,660
Ending balance	^[15],[18]	$ 6,660			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	^[11]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0	^[15]	$ 0	$ 0	^[15]	$ 0
Investment, Identifier [Axis]: ATS Workholding, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		5.00%	^{[15],[17],[19]}	5.00%	5.00%	^{[15],[17],[19]}	5.00%	5.00%	^[11],[20]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(281)		(414)
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					328	^[11],[20]	634
Gross Additions					167		188
Gross Reductions					281		414
Ending balance		$ 214	^{[15],[17],[19]}	$ 408	$ 214	^{[15],[17],[19]}	$ 408
Investment, Identifier [Axis]: ATS Workholding, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		5.00%	^{[15],[17],[19]}	5.00%	5.00%	^{[15],[17],[19]}	5.00%	5.00%	^[11],[20]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(187)		(417)
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					473	^[11],[20]	1,005
Gross Additions					0		0
Gross Reductions					187		417
Ending balance		$ 286	^{[15],[17],[19]}	$ 588	286	^{[15],[17],[19]}	588
Investment, Identifier [Axis]: ATX Networks Corp., Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							3,248
Amount of Unrealized Gain/(Loss)							(3,270)
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							3,270
Gross Additions							3,248
Gross Reductions							6,518
Ending balance				$ 0			$ 0
Investment, Identifier [Axis]: ATX Networks Corp., Secured Debt
Schedule of Investments [Line Items]
Spread				7.50%			7.50%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(134)
Amount of Interest, Fees or Dividends Credited to Income							886
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							6,343
Gross Additions							575
Gross Reductions							6,918
Ending balance				$ 0			0
Investment, Identifier [Axis]: ATX Networks Corp., Unsecured Debt
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							(306)
Amount of Interest, Fees or Dividends Credited to Income							1,160
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							2,598
Gross Additions							1,160
Gross Reductions							3,758
Ending balance				0			0
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11],[14]				892
Ending balance	^[15],[16]	$ 796			$ 796
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.25%	^{[15],[18],[21]}		7.25%	^{[15],[18],[21]}		7.25%	^{[11],[12],[13]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[11],[12],[13]}				$ (38)
Ending balance	^{[15],[18],[21]}	$ (97)			$ (97)
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.06%	^[15],[18]		12.06%	^[15],[18]		12.76%	^[11],[13]
Spread		7.25%	^[15],[18]		7.25%	^[15],[18]		7.25%	^[11],[13]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11],[13]				$ 24,080
Ending balance	^[15],[18]	$ 24,228			24,228
Investment, Identifier [Axis]: Acumera, Inc., Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	^[15],[16]	$ 30			30
Investment, Identifier [Axis]: Acumera, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread	^{[11],[12],[13]}							7.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[11],[12],[13]}				(2)
Investment, Identifier [Axis]: Acumera, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	^[11],[13]							12.98%
Spread	^[11],[13]							7.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11],[13]				24,796
Investment, Identifier [Axis]: Acumera, Inc., Warrants
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11],[22]				$ 110
Investment, Identifier [Axis]: Adams Publishing Group, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.00%	^{[15],[18],[23]}		11.00%	^{[15],[18],[23]}		11.00%	^{[11],[13],[24]}
Spread		7.00%	^{[15],[18],[23]}		7.00%	^{[15],[18],[23]}		7.00%	^{[11],[13],[24]}
PIK Rate		1.00%	^{[15],[18],[23]}		1.00%	^{[15],[18],[23]}		1.00%	^{[11],[13],[24]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[11],[13],[24]}				$ 7,684
Ending balance	^{[15],[18],[23]}	$ 7,737			$ 7,737
Investment, Identifier [Axis]: Adams Publishing Group, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.00%	^{[15],[18],[23]}		11.00%	^{[15],[18],[23]}		11.00%	^{[11],[13],[24]}
Spread		7.00%	^{[15],[18],[23]}		7.00%	^{[15],[18],[23]}		7.00%	^{[11],[13],[24]}
PIK Rate		1.00%	^{[15],[18],[23]}		1.00%	^{[15],[18],[23]}		1.00%	^{[11],[13],[24]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[11],[13],[24]}				$ 20,784
Ending balance	^{[15],[18],[23]}	$ 19,043			$ 19,043
Investment, Identifier [Axis]: American Health Staffing Group, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		5.00%	^{[15],[18],[21]}		5.00%	^{[15],[18],[21]}		5.00%	^{[11],[12],[13]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[11],[12],[13]}				$ (8)
Ending balance	^{[15],[18],[21]}	$ (6)			$ (6)
Investment, Identifier [Axis]: American Health Staffing Group, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%	^[15],[18]		13.00%	^[15],[18]		13.50%	^[11],[13]
Spread		5.00%	^[15],[18]		5.00%	^[15],[18]		5.00%	^[11],[13]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11],[13]				$ 6,550
Ending balance	^[15],[18]	$ 6,162			$ 6,162
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.23%	^[15],[18]		15.23%	^[15],[18]		15.29%	^[11],[13]
Spread		9.75%	^[15],[18]		9.75%	^[15],[18]		9.75%	^[11],[13]
PIK Rate		15.23%	^[15],[18]		15.23%	^[15],[18]		15.29%	^[11],[13]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11],[13]				$ 5,495
Ending balance	^[15],[18]	$ 6,087			$ 6,087
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.23%	^[15],[18]		15.23%	^[15],[18]		15.29%	^[11],[13]
Spread		9.75%	^[15],[18]		9.75%	^[15],[18]		9.75%	^[11],[13]
PIK Rate		15.23%	^[15],[18]		15.23%	^[15],[18]		15.29%	^[11],[13]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11],[13]				$ 8,922
Ending balance	^[15],[18]	$ 9,903			$ 9,903
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		17.20%	^{[15],[18],[19]}		17.20%	^{[15],[18],[19]}		17.29%	^{[11],[13],[20]}
Spread		11.75%	^{[15],[18],[19]}		11.75%	^{[15],[18],[19]}		11.75%	^{[11],[13],[20]}
PIK Rate		17.20%	^{[15],[18],[19]}		17.20%	^{[15],[18],[19]}		17.29%	^{[11],[13],[20]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[11],[13],[20]}				$ 3,369
Ending balance	^{[15],[18],[19]}	$ 3,809			$ 3,809
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		17.20%	^{[15],[18],[19]}		17.20%	^{[15],[18],[19]}		17.29%	^{[11],[13],[20]}
Spread		11.75%	^{[15],[18],[19]}		11.75%	^{[15],[18],[19]}		11.75%	^{[11],[13],[20]}
PIK Rate		17.20%	^{[15],[18],[19]}		17.20%	^{[15],[18],[19]}		17.29%	^{[11],[13],[20]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[11],[13],[20]}				$ 5,482
Ending balance	^{[15],[18],[19]}	$ 6,198			6,198
Investment, Identifier [Axis]: American Teleconferencing Services, Ltd., Secured Debt 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[7],[20],[25]}				134
Ending balance	^{[8],[17],[19]}	76			76
Investment, Identifier [Axis]: American Teleconferencing Services, Ltd., Secured Debt 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[7],[20],[25]}				647
Ending balance	^{[8],[17],[19]}	374			374
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)					0		0
Amount of Unrealized Gain/(Loss)					(3,694)		0
Amount of Interest, Fees or Dividends Credited to Income					(2,723)		171
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					(71,799)		14,914
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		0		0	0		0
Investment, Identifier [Axis]: Amounts related to investments transferred to or from other 1940 Act classification during the period, Control Investments
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					3,694		0
Amount of Interest, Fees or Dividends Credited to Income					2,723		(171)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					58,515		(14,914)
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		0		$ 0	0		$ 0
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Total Rate				14.13%			14.13%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,860		0
Gross Additions							0
Gross Reductions							0
Ending balance		5,710		$ 0	5,710		0
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Preferred Member Units 1.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance		0			0
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Total Rate								14.13%
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							1,076
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0		3,504
Gross Additions							1,076
Gross Reductions							0
Ending balance		0		$ 4,580	0		$ 4,580
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)					850
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,860
Gross Additions					850
Gross Reductions					0
Ending balance		5,710			5,710
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				15.38%			15.38%	15.38%	^[13]
Spread				10.00%			10.00%	10.00%	^[13]
Amount of Realized Gain/(Loss)					0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					5		4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					219	^[13]	(3)
Gross Additions					0		162
Gross Reductions					219		0
Ending balance		$ 0	^[21]	$ 159	$ 0	^[21]	$ 159
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.75%		15.38%	13.75%		15.38%	15.38%	^[13]
Spread				10.00%			10.00%	10.00%	^[13]
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					4,084	^[13]	4,545
Gross Additions					310		61
Gross Reductions					300		469
Ending balance		$ 4,094		$ 4,137	4,094		4,137
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	^[9]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0	^[10]	0	$ 0	^[10]	0
Investment, Identifier [Axis]: Ansira Partners II, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	^[15],[18]	11.88%			11.88%
Spread	^[15],[18]	6.75%			6.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	^[15],[18]	$ 637			$ 637
Investment, Identifier [Axis]: Ansira Partners II, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	^[15],[18]	12.08%			12.08%
Spread	^[15],[18]	6.75%			6.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	^[15],[18]	$ 75,326			$ 75,326
Investment, Identifier [Axis]: ArborWorks, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11]				0
Ending balance	^[15]	0			0
Investment, Identifier [Axis]: ArborWorks, LLC, Preferred Equity 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11]				14,060
Ending balance	^[15]	12,552			12,552
Investment, Identifier [Axis]: ArborWorks, LLC, Preferred Equity 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11]				0
Ending balance	^[15]	$ 0			$ 0
Investment, Identifier [Axis]: ArborWorks, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.00%	^[15]		15.00%	^[15]		15.00%	^[11]
PIK Rate		15.00%	^[15]		15.00%	^[15]		15.00%	^[11]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11]				$ 1,907
Ending balance	^[15]	$ 3,965			$ 3,965
Investment, Identifier [Axis]: ArborWorks, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.76%	^[15],[18]		11.76%	^[15],[18]		12.04%	^[11],[13]
Spread		6.50%	^[15],[18]		6.50%	^[15],[18]		6.50%	^[11],[13]
PIK Rate		11.76%	^[15],[18]		11.76%	^[15],[18]		12.04%	^[11],[13]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11],[13]				$ 7,149
Ending balance	^[15],[18]	$ 7,826			7,826
Investment, Identifier [Axis]: Archer Systems, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11]				2,230
Ending balance	^[15]	2,210			2,210
Investment, Identifier [Axis]: BBB Tank Services, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							0
Gross Additions							0
Gross Reductions							0
Ending balance				$ 0			$ 0
Investment, Identifier [Axis]: BBB Tank Services, LLC, Preferred Stock (non-voting)
Schedule of Investments [Line Items]
Total Rate				15.00%			15.00%
PIK Rate				15.00%			15.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							0
Gross Additions							0
Gross Reductions							0
Ending balance				$ 0			$ 0
Investment, Identifier [Axis]: BBB Tank Services, LLC, Unsecured Debt 1
Schedule of Investments [Line Items]
Total Rate				16.44%			16.44%
Spread				11.00%			11.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							96
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							800
Gross Additions							0
Gross Reductions							200
Ending balance				$ 600			$ 600
Investment, Identifier [Axis]: BBB Tank Services, LLC, Unsecured Debt 2
Schedule of Investments [Line Items]
Total Rate				16.44%			16.44%
Spread				11.00%			11.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							116
Amount of Interest, Fees or Dividends Credited to Income							484
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							2,086
Gross Additions							116
Gross Reductions							0
Ending balance				$ 2,202			2,202
Investment, Identifier [Axis]: BP Loenbro Holdings Inc., Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	^[15]	$ 3,620			$ 3,620
Investment, Identifier [Axis]: BP Loenbro Holdings Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	^{[15],[18],[26]}	11.22%			11.22%
Spread	^{[15],[18],[26]}	6.00%			6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	^{[15],[18],[26]}	$ 1,798			$ 1,798
Investment, Identifier [Axis]: BP Loenbro Holdings Inc., Secured Debt 2
Schedule of Investments [Line Items]
Spread	^{[15],[18],[21]}	6.00%			6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	^{[15],[18],[21]}	$ (24)			$ (24)
Investment, Identifier [Axis]: BP Loenbro Holdings Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	^[15],[18]	11.35%			11.35%
Spread	^[15],[18]	6.00%			6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	^[15],[18]	$ 26,339			$ 26,339
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)					1,220		(280)
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,140	^[11]	3,320
Gross Additions					1,220		0
Gross Reductions					0		280
Ending balance		$ 5,360	^[15]	$ 3,040	$ 5,360	^[15]	$ 3,040
Investment, Identifier [Axis]: Barfly Ventures, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		7.00%	^[15]	7.00%	7.00%	^[15]	7.00%	7.00%	^[11]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					38		45
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					711	^[11]	711
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 711	^[15]	$ 711	711	^[15]	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)					(990)		2,055
Amount of Interest, Fees or Dividends Credited to Income					643		630
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					6,150	^[14]	4,095
Gross Additions					0		2,055
Gross Reductions					990		0
Ending balance		$ 5,160	^[16]	6,150	$ 5,160	^[16]	6,150
Investment, Identifier [Axis]: Batjer TopCo, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.00%			10.00%
Amount of Realized Gain/(Loss)					$ 0		0
Amount of Unrealized Gain/(Loss)					(6)		6
Amount of Interest, Fees or Dividends Credited to Income					30		1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	^[12]	(8)
Gross Additions					451		8
Gross Reductions					6		0
Ending balance		$ 445		$ 0	$ 445		$ 0
Investment, Identifier [Axis]: Batjer TopCo, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.00%		10.00%	10.00%		10.00%	10.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					21		11
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					270		0
Gross Additions					0		630
Gross Reductions					0		0
Ending balance		$ 270		$ 630	$ 270		$ 630
Investment, Identifier [Axis]: Batjer TopCo, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.00%		10.00%	10.00%		10.00%	10.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(67)		73
Amount of Interest, Fees or Dividends Credited to Income					821		859
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					10,575		10,933
Gross Additions					16		93
Gross Reductions					67		451
Ending balance		$ 10,524		$ 10,575	10,524		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	^[11],[27]				200
Ending balance	^[15]	0			0
Investment, Identifier [Axis]: Berry Aviation, Inc., Preferred Member Units 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[11],[14],[27]}				2,560
Ending balance	^[15],[28]	0			0
Investment, Identifier [Axis]: Berry Aviation, Inc., Preferred Member Units 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	^[15],[28]	$ 0			$ 0
Investment, Identifier [Axis]: Bettercloud, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		10.25%	^{[15],[18],[21]}		10.25%	^{[15],[18],[21]}		7.25%	^{[11],[12],[13]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[11],[12],[13]}				$ (62)
Ending balance	^{[15],[18],[21]}	$ (52)			$ (52)
Investment, Identifier [Axis]: Bettercloud, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.31%	^[15],[18]		15.31%	^[15],[18]		12.64%	^[11],[13]
Spread		10.25%	^[15],[18]		10.25%	^[15],[18]		7.25%	^[11],[13]
PIK Rate		9.25%	^[15],[18]		9.25%	^[15],[18]		6.25%	^[11],[13]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11],[13]				$ 27,550
Ending balance	^[15],[18]	$ 25,986			25,986
Investment, Identifier [Axis]: Binswanger Enterprises, LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11]				120
Ending balance	^[15]	580			580
Investment, Identifier [Axis]: Bluestem Brands, Inc., Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[7]				550
Ending balance	^[8]	$ 0			$ 0
Investment, Identifier [Axis]: Bluestem Brands, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.82%	^[8],[18]		13.82%	^[8],[18]		16.00%	^[7],[13]
Spread		8.50%	^[8],[18]		8.50%	^[8],[18]		7.50%	^[7],[13]
PIK Rate		12.82%	^[8],[18]		12.82%	^[8],[18]		15.00%	^[7],[13]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[7],[13]				$ 1,767
Ending balance	^[8],[18]	$ 174			$ 174
Investment, Identifier [Axis]: Bluestem Brands, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.50%	^[8],[18]		15.50%	^[8],[18]		13.96%	^[7],[13]
Spread		7.50%	^[8],[18]		7.50%	^[8],[18]		8.50%	^[7],[13]
PIK Rate		15.00%	^[8],[18]		15.00%	^[8],[18]		12.96%	^[7],[13]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[7],[13]				$ 3,446
Ending balance	^[8],[18]	$ 3,161			$ 3,161
Investment, Identifier [Axis]: Bluestem Brands, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	^[8],[18]	13.82%			13.82%
Spread	^[8],[18]	8.50%			8.50%
PIK Rate	^[8],[18]	12.82%			12.82%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	^[8],[18]	$ 3,710			$ 3,710
Investment, Identifier [Axis]: Bluestem Brands, Inc., Warrants
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[7],[9]				120
Ending balance	^[8],[10]	0			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)					(1,680)		(840)
Amount of Interest, Fees or Dividends Credited to Income					30		61
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,990		2,970
Gross Additions					0		0
Gross Reductions					1,680		840
Ending balance		$ 310	^[16]	$ 2,130	$ 310	^[16]	$ 2,130
Investment, Identifier [Axis]: Boccella Precast Products LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		10.00%		10.00%	10.00%		10.00%	10.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(55)		0
Amount of Interest, Fees or Dividends Credited to Income					24		24
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					320		320
Gross Additions					0		0
Gross Reductions					55		0
Ending balance		$ 265		$ 320	$ 265		$ 320
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Class B Preferred Member Units
Schedule of Investments [Line Items]
Total Rate		8.00%	^[16]	8.00%	8.00%	^[16]	8.00%	8.00%	^[14]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					3,690		(300)
Amount of Interest, Fees or Dividends Credited to Income					2,450		2,920
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					31,020	^[14]	31,420
Gross Additions					3,690		0
Gross Reductions					0		300
Ending balance		$ 34,710	^[16]	$ 31,120	34,710	^[16]	31,120
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	^[13],[29]							14.48%
Spread	^[13],[29]							9.11%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[13],[29]				96,556
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							0
Gross Additions							0
Gross Reductions							0
Ending balance		$ 0	^[21]	$ 0	$ 0	^[21]	$ 0
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		13.27%			13.27%
Spread		8.02%			8.02%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					(63)
Amount of Interest, Fees or Dividends Credited to Income					10,313
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					96,556
Gross Additions					7,599
Gross Reductions					1,916
Ending balance		$ 102,239			$ 102,239
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.27%	^[18],[30]	14.52%	13.27%	^[18],[30]	14.52%
Spread		8.02%	^[18],[30]	9.15%	8.02%	^[18],[30]	9.15%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(106)
Amount of Interest, Fees or Dividends Credited to Income							10,599
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							99,194
Gross Additions							106
Gross Reductions							2,084
Ending balance		$ 102,239	^[18],[30]	$ 97,216	$ 102,239	^[18],[30]	97,216
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					116
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance		0			0
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[11],[31],[32]}				0
Ending balance	^{[15],[33],[34]}	0			0
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[11],[31],[32]}				500
Ending balance	^{[15],[33],[34]}	$ 501			$ 501
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.00%	^{[15],[18],[21],[33],[34]}		7.00%	^{[15],[18],[21],[33],[34]}		7.00%	^{[11],[12],[13],[31],[32]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[11],[12],[13],[31],[32]}				$ (25)
Ending balance	^{[15],[18],[21],[33],[34]}	$ (20)			$ (20)
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.48%	^{[15],[18],[33],[34]}		11.48%	^{[15],[18],[33],[34]}		11.54%	^{[11],[13],[31],[32]}
Spread		6.00%	^{[15],[18],[33],[34]}		6.00%	^{[15],[18],[33],[34]}		6.00%	^{[11],[13],[31],[32]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[11],[13],[31],[32]}				$ 6,405
Ending balance	^{[15],[18],[33],[34]}	$ 6,357			$ 6,357
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		13.48%	^{[15],[18],[33],[34]}		13.48%	^{[15],[18],[33],[34]}		13.54%	^{[11],[13],[31],[32]}
Spread		8.00%	^{[15],[18],[33],[34]}		8.00%	^{[15],[18],[33],[34]}		8.00%	^{[11],[13],[31],[32]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[11],[13],[31],[32]}				$ 6,405
Ending balance	^{[15],[18],[33],[34]}	$ 6,357			$ 6,357
Investment, Identifier [Axis]: Brainworks Software, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.25%	^{[15],[17],[18],[19]}		15.25%	^{[15],[17],[18],[19]}		15.75%	^{[11],[13],[20],[25]}
Spread		7.25%	^{[15],[17],[18],[19]}		7.25%	^{[15],[17],[18],[19]}		7.25%	^{[11],[13],[20],[25]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[11],[13],[20],[25]}				$ 761
Ending balance	^{[15],[17],[18],[19]}	$ 761			$ 761
Investment, Identifier [Axis]: Brainworks Software, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.25%	^{[15],[17],[18],[19]}		15.25%	^{[15],[17],[18],[19]}		15.75%	^{[11],[13],[20],[25]}
Spread		7.25%	^{[15],[17],[18],[19]}		7.25%	^{[15],[17],[18],[19]}		7.25%	^{[11],[13],[20],[25]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[11],[13],[20],[25]}				$ 1,075
Ending balance	^{[15],[17],[18],[19]}	$ 750			750
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)					(190)		(1,460)
Amount of Interest, Fees or Dividends Credited to Income					90		90
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,620	^[14]	7,080
Gross Additions					0		0
Gross Reductions					189		1,460
Ending balance		$ 5,431	^[16]	$ 5,620	$ 5,431	^[16]	$ 5,620
Investment, Identifier [Axis]: Brewer Crane Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		15.35%	^[18]	15.44%	15.35%	^[18]	15.44%	15.46%	^[13]
Spread		10.00%	^[18]	10.00%	10.00%	^[18]	10.00%	10.00%	^[13]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		(117)
Amount of Interest, Fees or Dividends Credited to Income					631		682
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,498	^[13]	5,964
Gross Additions					14		30
Gross Reductions					372		489
Ending balance		$ 5,140	^[18]	$ 5,505	5,140	^[18]	5,505
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)					(1,000)		0
Amount of Interest, Fees or Dividends Credited to Income					75		75
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,000	^[14],[27]	1,000
Gross Additions					0		0
Gross Reductions					1,000		0
Ending balance		0	^[16],[28]	$ 1,000	0	^[16],[28]	$ 1,000
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, 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)					0		0
Amount of Interest, Fees or Dividends Credited to Income					767		869
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					8,813		8,813
Gross Additions					0		0
Gross Reductions					8,813		0
Ending balance		0		$ 8,813	0		$ 8,813
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, 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)					0		0
Amount of Interest, Fees or Dividends Credited to Income					87		99
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,000		1,000
Gross Additions					0		0
Gross Reductions					1,000		0
Ending balance		0		$ 1,000	0		1,000
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Warrants
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[9]				4,290
Ending balance	^[10]	0			0
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Warrants 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(1,808)		46
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,808		1,828
Gross Additions					0		46
Gross Reductions					1,808		0
Ending balance		0		1,874	0		1,874
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)					(2,482)		64
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,482		2,512
Gross Additions					0		64
Gross Reductions					2,482		0
Ending balance		0		$ 2,576	0		$ 2,576
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	^{[31],[35],[36]}				4,080
Ending balance	^{[33],[37],[38]}	3,468			3,468
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	^{[14],[31],[35],[36]}				4,358
Ending balance	^{[16],[33],[37],[38]}	4,401			4,401
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	^{[14],[31],[35],[36]}				2,448
Ending balance	^{[16],[33],[37],[38]}	$ 3,211			$ 3,211
Investment, Identifier [Axis]: Buca C, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Total Rate		6.00%		6.00%	6.00%		6.00%	6.00%
PIK Rate		6.00%		6.00%	6.00%		6.00%	6.00%
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		0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0		$ 0	$ 0		$ 0
Investment, Identifier [Axis]: Buca C, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Total Rate		6.00%			6.00%
PIK Rate		6.00%			6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		$ 0			$ 0
Investment, Identifier [Axis]: Buca C, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate				12.00%			12.00%	12.00%	^[25]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							292
Amount of Interest, Fees or Dividends Credited to Income							1,659
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 12,144	^[25]	12,337
Gross Additions							292
Gross Reductions							375
Ending balance				$ 12,254			12,254
Investment, Identifier [Axis]: Buca C, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	^[19]	15.00%			15.00%
PIK Rate	^[19]	10.00%			10.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	^[19]	$ 16,226			$ 16,226
Investment, Identifier [Axis]: Buca C, LLC, Secured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		15.00%			15.00%
PIK Rate		15.00%			15.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					(1,025)
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					12,144
Ending balance		$ 0			$ 0
Investment, Identifier [Axis]: Buca C, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	^[19],[21]	15.00%			15.00%
PIK Rate	^[19],[21]	15.00%			15.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance	^[19],[21]	$ 0			$ 0
Investment, Identifier [Axis]: Buca C, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	^[17],[19]	15.00%			15.00%
PIK Rate	^[17],[19]	15.00%			15.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	^[17],[19]	$ 0			$ 0
Investment, Identifier [Axis]: Buca C, LLC, Secured Debt 3.1
Schedule of Investments [Line Items]
Total Rate		15.00%			15.00%
PIK Rate		10.00%			10.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					(3,345)
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					19,571
Gross Reductions					3,345
Ending balance		$ 16,226			$ 16,226
Investment, Identifier [Axis]: Burning Glass Intermediate Holding Company, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	^[11],[13]							10.46%
Spread		5.00%	^{[15],[18],[21]}		5.00%	^{[15],[18],[21]}		5.00%	^[11],[13]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11],[13]				$ 465
Ending balance	^{[15],[18],[21]}	$ 0			$ 0
Investment, Identifier [Axis]: Burning Glass Intermediate Holding Company, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		9.95%	^[15],[18]		9.95%	^[15],[18]		10.46%	^[11],[13]
Spread		5.00%	^[15],[18]		5.00%	^[15],[18]		5.00%	^[11],[13]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11],[13]				$ 19,681
Ending balance	^[15],[18]	$ 18,766			18,766
Investment, Identifier [Axis]: CAI Software LLC, Preferred Equity 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,789
Ending balance		2,227			2,227
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			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)					(590)		1,838
Amount of Interest, Fees or Dividends Credited to Income					1,647		2,059
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					50,130	^[14]	49,002
Gross Additions					0		1,838
Gross Reductions					590		0
Ending balance		$ 49,540	^[16]	50,840	$ 49,540	^[16]	50,840
Investment, Identifier [Axis]: CMS Minerals Investments, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							99
Amount of Unrealized Gain/(Loss)							(366)
Amount of Interest, Fees or Dividends Credited to Income							44
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							1,670
Gross Additions							99
Gross Reductions							1,769
Ending balance				0			0
Investment, Identifier [Axis]: CQ Fluency, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.75%	^{[15],[18],[21]}		6.75%	^{[15],[18],[21]}		7.00%	^{[11],[12],[13]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[11],[12],[13]}				$ (66)
Ending balance	^{[15],[18],[21]}	$ (52)			$ (52)
Investment, Identifier [Axis]: CQ Fluency, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Spread		6.75%	^{[15],[18],[21]}		6.75%	^{[15],[18],[21]}		7.00%	^{[11],[12],[13]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[11],[12],[13]}				$ (66)
Ending balance	^{[15],[18],[21]}	$ (52)			$ (52)
Investment, Identifier [Axis]: CQ Fluency, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.49%	^[15],[18]		11.49%	^[15],[18]		12.45%	^[11],[13]
Spread		6.75%	^[15],[18]		6.75%	^[15],[18]		7.00%	^[11],[13]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11],[13]				$ 10,920
Ending balance	^[15],[18]	$ 10,755			10,755
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)					(520)		(180)
Amount of Interest, Fees or Dividends Credited to Income					30		149
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,980	^[14]	2,210
Gross Additions					0		0
Gross Reductions					520		180
Ending balance		$ 1,460	^[16]	2,030	$ 1,460	^[16]	2,030
Investment, Identifier [Axis]: California Splendor Holdings LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Total Rate		15.00%	^[16]		15.00%	^[16]		15.00%	^[14]
PIK Rate		15.00%	^[16]		15.00%	^[16]		15.00%	^[14]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							(4,550)
Amount of Interest, Fees or Dividends Credited to Income							188
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 4,601	^[14]	25,495
Gross Additions							0
Gross Reductions							4,550
Ending balance		$ 10,541	^[16]	$ 20,945	10,541	^[16]	$ 20,945
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)					893
Amount of Interest, Fees or Dividends Credited to Income					188
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					15,695
Gross Additions					6,520
Gross Reductions					0
Ending balance		22,215			22,215
Investment, Identifier [Axis]: California Splendor Holdings LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Total Rate				15.00%			15.00%
PIK Rate				15.00%			15.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							454
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					15,695	^[14]	3,994
Gross Additions							454
Gross Reductions							0
Ending balance		$ 22,215	^[16]	$ 4,448	$ 22,215	^[16]	$ 4,448
Investment, Identifier [Axis]: California Splendor Holdings LLC, Preferred Member Units 2.1
Schedule of Investments [Line Items]
Total Rate		15.00%			15.00%
PIK Rate		15.00%			15.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					940
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,601
Gross Additions					5,940
Gross Reductions					0
Ending balance		$ 10,541			10,541
Investment, Identifier [Axis]: California Splendor Holdings LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate				15.50%			15.50%	15.69%	^[13],[14]
Spread				10.00%			10.00%	10.00%	^[13],[14]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(49)
Amount of Interest, Fees or Dividends Credited to Income							3,240
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 27,655	^[13],[14]	28,000
Gross Additions							10
Gross Reductions							49
Ending balance				$ 27,961			27,961
Investment, Identifier [Axis]: California Splendor Holdings LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		14.00%			14.00%
PIK Rate		4.00%			4.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		$ 1,487			$ 1,487
Investment, Identifier [Axis]: California Splendor Holdings LLC, Secured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		14.00%			14.00%
PIK Rate		4.00%			4.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					(79)
Amount of Interest, Fees or Dividends Credited to Income					3,098
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					27,655
Gross Additions					594
Gross Reductions					79
Ending balance		$ 28,170			$ 28,170
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%			4.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		$ 28,170			$ 28,170
Investment, Identifier [Axis]: California Splendor Holdings LLC, Secured Debt 2.1
Schedule of Investments [Line Items]
Total Rate		14.00%			14.00%
PIK Rate		4.00%			4.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					49
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					1,487
Gross Reductions					0
Ending balance		$ 1,487			1,487
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					4,500		4,500
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 4,500		$ 4,500	$ 4,500		$ 4,500
Investment, Identifier [Axis]: Career Team Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.25%	^[18]		11.25%	^[18]		11.38%	^[13]
Spread		6.00%	^[18]	6.00%	6.00%	^[18]	6.00%	6.00%	^[13]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					94		18
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					881	^[13]	(9)
Gross Additions					2,255		439
Gross Reductions					2,475		451
Ending balance		$ 661	^[18]	$ (21)	$ 661	^[18]	$ (21)
Investment, Identifier [Axis]: Career Team Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%		12.50%	13.00%		12.50%	13.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					1,999		1,950
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					19,906		20,090
Gross Additions					31		31
Gross Reductions					180		90
Ending balance		$ 19,757		$ 20,031	19,757		20,031
Investment, Identifier [Axis]: CaseWorthy, Inc., Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11]				246
Ending balance	^[15]	490			490
Investment, Identifier [Axis]: CaseWorthy, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread	^{[11],[12],[13]}							6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[11],[12],[13]}				(8)
Investment, Identifier [Axis]: CaseWorthy, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	^[11],[13]							11.61%
Spread	^[11],[13]							6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11],[13]				7,933
Investment, Identifier [Axis]: CaseWorthy, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	^[11],[13]							11.61%
Spread	^[11],[13]							6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11],[13]				6,102
Investment, Identifier [Axis]: CenterPeak Holdings, LLC, Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	^[16]	14,300			14,300
Investment, Identifier [Axis]: CenterPeak Holdings, LLC, Secured Debt 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	^[21]	$ 0			$ 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]
Ending balance		$ 21,507			$ 21,507
Investment, Identifier [Axis]: Central Moloney, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	^[15],[18]	11.35%			11.35%
Spread	^[15],[18]	6.75%			6.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	^[15],[18]	$ 38,320			$ 38,320
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)					920		1,700
Amount of Interest, Fees or Dividends Credited to Income					90		90
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					11,040		8,700
Gross Additions					920		1,700
Gross Reductions					0		0
Ending balance		$ 11,960		$ 10,400	$ 11,960		$ 10,400
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		10.00%	^[18],[21]	9.00%	10.00%	^[18],[21]	9.00%	9.00%	^[12],[13]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					9		9
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	^[12],[13]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0	^[18],[21]	$ 0	$ 0	^[18],[21]	$ 0
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.35%	^[18]	14.48%	15.35%	^[18]	14.48%	14.48%	^[13]
Spread		10.00%	^[18]	9.00%	10.00%	^[18]	9.00%	9.00%	^[13]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							70
Amount of Interest, Fees or Dividends Credited to Income							1,657
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 17,574	^[13]	14,954
Gross Additions							2,620
Gross Reductions							0
Ending balance		$ 20,462	^[18]	$ 17,574	$ 20,462	^[18]	17,574
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 2.1
Schedule of Investments [Line Items]
Total Rate		15.35%			15.35%
Spread		10.00%			10.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					207
Amount of Interest, Fees or Dividends Credited to Income					2,206
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					21,974
Gross Reductions					1,512
Ending balance		$ 20,462			20,462
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(62)
Amount of Interest, Fees or Dividends Credited to Income					281
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					17,574
Gross Additions					0
Gross Reductions					17,574
Ending balance		0			0
Investment, Identifier [Axis]: Chamberlin Holding LLC, Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					1,210		3,010
Amount of Interest, Fees or Dividends Credited to Income					3,875		2,792
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					29,320	^[14]	22,920
Gross Additions					1,210		3,010
Gross Reductions					0		0
Ending balance		30,530	^[16]	25,930	30,530	^[16]	25,930
Investment, Identifier [Axis]: Chamberlin Holding LLC, Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					360		260
Amount of Interest, Fees or Dividends Credited to Income					69		69
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,860	^[14],[27]	2,710
Gross Additions					360		260
Gross Reductions					0		0
Ending balance		$ 3,220	^[16],[28]	$ 2,970	$ 3,220	^[16],[28]	$ 2,970
Investment, Identifier [Axis]: Chamberlin Holding LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.00%	^[18],[21]	6.00%	6.00%	^[18],[21]	6.00%	6.00%	^[12],[13]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(67)		140
Amount of Interest, Fees or Dividends Credited to Income					74		21
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	^[12],[13]	0
Gross Additions					67		0
Gross Reductions					67		0
Ending balance		$ 0	^[18],[21]	$ 0	$ 0	^[18],[21]	$ 0
Investment, Identifier [Axis]: Chamberlin Holding LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.36%	^[18]	13.49%	13.36%	^[18]	13.49%	13.49%	^[13]
Spread		8.00%	^[18]	8.00%	8.00%	^[18]	8.00%	8.00%	^[13]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(1)		(7)
Amount of Interest, Fees or Dividends Credited to Income					1,603		1,655
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					15,620	^[13]	16,945
Gross Additions					1		7
Gross Reductions					1		545
Ending balance		$ 15,620	^[18]	$ 16,407	$ 15,620	^[18]	16,407
Investment, Identifier [Axis]: Chandler Signs Holdings, LLC, Class A Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							1,797
Amount of Unrealized Gain/(Loss)							(290)
Amount of Interest, Fees or Dividends Credited to Income							60
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							1,790
Gross Additions							1,797
Gross Reductions							3,587
Ending balance				0			0
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.02%	^{[15],[18],[26]}		12.02%	^{[15],[18],[26]}		12.60%	^{[11],[13],[39]}
Spread		7.00%	^{[15],[18],[26]}		7.00%	^{[15],[18],[26]}		7.00%	^{[11],[13],[39]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[11],[13],[39]}				$ 1,988
Ending balance	^{[15],[18],[26]}	$ 4,756			$ 4,756
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.55%	^[15],[18]		12.55%	^[15],[18]		12.66%	^[11],[13]
Spread		7.00%	^[15],[18]		7.00%	^[15],[18]		7.00%	^[11],[13]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11],[13]				$ 35,064
Ending balance	^[15],[18]	$ 33,982			$ 33,982
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.55%	^[15],[18]		12.55%	^[15],[18]		12.66%	^[11],[13]
Spread		7.00%	^[15],[18]		7.00%	^[15],[18]		7.00%	^[11],[13]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11],[13]				$ 1,943
Ending balance	^[15],[18]	$ 1,883			$ 1,883
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		12.55%	^[15],[18]		12.55%	^[15],[18]		12.66%	^[11],[13]
Spread		7.00%	^[15],[18]		7.00%	^[15],[18]		7.00%	^[11],[13]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[11],[13]				$ 4,695
Ending balance	^[15],[18]	$ 4,550			4,550
Investment, Identifier [Axis]: Charps, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(110)		670
Amount of Interest, Fees or Dividends Credited to Income					483		666
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					15,690	^[14]	13,340
Gross Additions					0		670
Gross Reductions					110		0
Ending balance		$ 15,580	^[16]	$ 14,010	$ 15,580	^[16]	$ 14,010
Investment, Identifier [Axis]: Charps, LLC, Unsecured Debt
Schedule of Investments [Line Items]
Total Rate		10.00%		10.00%	10.00%		10.00%	10.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(366)		(26)
Amount of Interest, Fees or Dividends Credited to Income					793		452
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,694		5,694
Gross Additions					366		26
Gross Reductions					366		26
Ending balance		$ 5,694		$ 5,694	5,694		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)					3,640		(2,640)
Amount of Interest, Fees or Dividends Credited to Income					585		275
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,200	^[14]	8,220
Gross Additions					3,640		0
Gross Reductions					0		2,640
Ending balance		8,840	^[16]	5,580	8,840	^[16]	5,580
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)					(179)		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					1,129	^[27]	610
Gross Additions					0		519
Gross Reductions					179		0
Ending balance		950	^[28]	1,129	950	^[28]	1,129
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					2		2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	^[12]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0	^[21]	$ 0	$ 0	^[21]	$ 0
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.00%		11.50%	10.00%		11.50%	11.50%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					138		(138)
Amount of Interest, Fees or Dividends Credited to Income					709		910
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					8,422		10,440
Gross Additions					109		29
Gross Reductions					1,400		1,817
Ending balance		$ 7,131		$ 8,652	$ 7,131		$ 8,652
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.00%		10.00%	10.00%		10.00%	10.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					75		78
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,004		1,039
Gross Additions					0		1
Gross Reductions					29		27
Ending balance		$ 975		$ 1,013	975		1,013
Investment, Identifier [Axis]: Clarius BIGS, LLC, Secured Debt
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[11],[20],[25]}				16
Ending balance	^{[15],[17],[19]}	17			17
Investment, Identifier [Axis]: Classic H&G Holdings, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					10,365		0
Amount of Unrealized Gain/(Loss)					(7,590)		(8,639)
Amount of Interest, Fees or Dividends Credited to Income					1,470		5,259
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					16,000	^[14]	24,637
Gross Additions					10,365		0
Gross Reductions					23,715		8,637
Ending balance		$ 2,650	^[16]	$ 16,000	$ 2,650	^[16]	$ 16,000
Investment, Identifier [Axis]: Classic H&G Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				11.50%			11.50%	11.69%	^[13]
Spread		6.00%		6.00%	6.00%		6.00%	6.00%	^[13]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					181		397
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,560	^[13]	4,560
Gross Additions					0		0
Gross Reductions					4,560		0
Ending balance		$ 0		$ 4,560	0		$ 4,560
Investment, Identifier [Axis]: Classic H&G Holdings, LLC, Secured Debt 2
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)					(50)		(32)
Amount of Interest, Fees or Dividends Credited to Income					654		1,201
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					19,274		19,274
Gross Additions					50		32
Gross Reductions					19,324		32
Ending balance		0		$ 19,274	0		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)					(2,510)		10,970
Amount of Interest, Fees or Dividends Credited to Income					1,568		2,610
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					72,470	^[14],[27]	58,180
Gross Additions					0		10,970
Gross Reductions					2,510		0
Ending balance		69,960	^[16],[28]	69,150	69,960	^[16],[28]	69,150
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					3		11
Amount of Interest, Fees or Dividends Credited to Income					38		8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	^[12]	0	</