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			6 Months Ended
		Jun. 30, 2024		Jun. 30, 2023	Jun. 30, 2024		Jun. 30, 2023	Dec. 31, 2023
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		$ 3,414		$ (75,506)	$ (8,954)		$ (103,886)
Amount of Unrealized Gain/(Loss)		23,044		104,941	63,693		140,059
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[1]				4,286,271
Ending balance	^[2]	4,737,511			4,737,511
Control investments
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		(361)		(48,111)	(352)		(51,077)
Amount of Unrealized Gain/(Loss)		5,589		75,779	37,659		92,940
Amount of Interest, Fees or Dividends Credited to Income					102,437		96,841
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,006,698	^[1],[3]	1,703,172
Gross Additions					243,661		338,651
Gross Reductions					114,546		173,038
Ending balance		2,075,429	^[2],[4]	1,883,699	2,075,429	^[2],[4]	1,883,699
Affiliate investments
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		7,863		9,997	753		(16,267)
Amount of Unrealized Gain/(Loss)		9,502		(11,469)	15,428		21,672
Amount of Interest, Fees or Dividends Credited to Income					40,928		38,455
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					615,002	^[1],[5]	618,359
Gross Additions					287,347		175,201
Gross Reductions					209,969		215,521
Ending balance		752,764	^[2],[6]	563,125	752,764	^[2],[6]	563,125
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					59		67
Gross Reductions					0		0
Ending balance		374		315	374		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		1,677
Amount of Unrealized Gain/(Loss)					2,941		(675)
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					2,998		2,077
Gross Reductions					57		3,283
Ending balance		8,991		6,346	8,991		6,346
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)					51		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					52		750
Gross Reductions					0		0
Ending balance		1,048		750	1,048		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)		(16)
Amount of Interest, Fees or Dividends Credited to Income					44		27
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					418	^[7]	0
Gross Additions					60		376
Gross Reductions					2		16
Ending balance		$ 476	^[8]	$ 360	$ 476	^[8]	$ 360
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)					(44)		(558)
Amount of Interest, Fees or Dividends Credited to Income					1,404		1,149
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					13,895	^[7]	11,550
Gross Additions					1,919		1,149
Gross Reductions					44		558
Ending balance		$ 15,770	^[8]	$ 12,141	15,770	^[8]	12,141
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		5.00%	^{[11],[12],[13]}		5.00%	^{[11],[12],[13]}		5.00%	^{[14],[15],[16]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[14],[15],[16]}				$ 0
Ending balance	^{[11],[12],[13]}	$ 0			$ 0
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.44%	^{[11],[13],[17]}		11.44%	^{[11],[13],[17]}		11.43%	^[14],[16]
Spread		6.00%	^{[11],[13],[17]}		6.00%	^{[11],[13],[17]}		6.00%	^[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14],[16]				$ 1,921
Ending balance	^{[11],[13],[17]}	$ 4,162			$ 4,162
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.44%	^[11],[13]		11.44%	^[11],[13]		11.43%	^[14],[16]
Spread		6.00%	^[11],[13]		6.00%	^[11],[13]		6.00%	^[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14],[16]				$ 19,817
Ending balance	^[11],[13]	$ 19,717			$ 19,717
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		11.44%	^[11],[13]		11.44%	^[11],[13]		11.43%	^[14],[16]
Spread		6.00%	^[11],[13]		6.00%	^[11],[13]		6.00%	^[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14],[16]				$ 1,372
Ending balance	^[11],[13]	$ 1,366			$ 1,366
Investment, Identifier [Axis]: ADS Tactical, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.25%	^[8],[13]		13.25%	^[8],[13]		11.22%	^[7],[16]
Spread		4.75%	^[8],[13]		4.75%	^[8],[13]		5.75%	^[7],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[7],[16]				$ 10,860
Ending balance	^[8],[13]	$ 6,431			6,431
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	^[14],[18]				2,120
Ending balance	^[11],[19]	1,920			1,920
Investment, Identifier [Axis]: AMEREQUIP LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread	^{[14],[15],[16]}							7.40%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[14],[15],[16]}				(108)
Investment, Identifier [Axis]: AMEREQUIP LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	^[14],[16]							12.76%
Spread	^[14],[16]							7.40%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14],[16]				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)					(60)		(384)
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		94
Gross Reductions					60		384
Ending balance		40		$ 510	40		$ 510
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			$ 266
Investment, Identifier [Axis]: ASC Interests, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.00%		13.00%	13.00%		13.00%	13.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					27		27
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					400		400
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 400		$ 400	$ 400		$ 400
Investment, Identifier [Axis]: ASC Interests, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%		13.00%	13.00%		13.00%	13.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		(52)
Amount of Interest, Fees or Dividends Credited to Income					109		108
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,597		1,649
Gross Additions					1		0
Gross Reductions					0		52
Ending balance		$ 1,598		$ 1,597	1,598		1,597
Investment, Identifier [Axis]: ATS Operating, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14]				670
Ending balance	^[11]	$ 720			$ 720
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.06%	^{[11],[13],[20]}		12.06%	^{[11],[13],[20]}		12.16%	^[14],[16]
Spread		6.50%	^{[11],[13],[20]}		6.50%	^{[11],[13],[20]}		6.50%	^[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14],[16]				$ 360
Ending balance	^{[11],[13],[20]}	$ 756			$ 756
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.06%	^[11],[13]		11.06%	^[11],[13]		11.16%	^[14],[16]
Spread		5.50%	^[11],[13]		5.50%	^[11],[13]		5.50%	^[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14],[16]				$ 6,660
Ending balance	^[11],[13]	$ 6,660			$ 6,660
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		13.06%	^[11],[13]		13.06%	^[11],[13]		13.16%	^[14],[16]
Spread		7.50%	^[11],[13]		7.50%	^[11],[13]		7.50%	^[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14],[16]				$ 6,660
Ending balance	^[11],[13]	$ 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	^[14]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0	^[11]	$ 0	$ 0	^[11]	$ 0
Investment, Identifier [Axis]: ATS Workholding, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		5.00%	^[11],[21]	5.00%	5.00%	^[11],[21]	5.00%	5.00%	^[14],[22]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(281)		(277)
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	^[14],[22]	634
Gross Additions					167		126
Gross Reductions					281		277
Ending balance		$ 214	^[11],[21]	$ 483	$ 214	^[11],[21]	$ 483
Investment, Identifier [Axis]: ATS Workholding, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		5.00%	^[11],[21]	5.00%	5.00%	^[11],[21]	5.00%	5.00%	^[14],[22]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(187)		(286)
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	^[14],[22]	1,005
Gross Additions					0		0
Gross Reductions					188		286
Ending balance		$ 285	^[11],[21]	$ 719	285	^[11],[21]	719
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	^[14],[18]				892
Ending balance	^[11],[19]	$ 892			$ 892
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.25%	^{[11],[12],[13]}		7.25%	^{[11],[12],[13]}		7.25%	^{[14],[15],[16]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[14],[15],[16]}				$ (38)
Ending balance	^{[11],[12],[13]}	$ (105)			$ (105)
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.74%	^[11],[13]		12.74%	^[11],[13]		12.76%	^[14],[16]
Spread		7.25%	^[11],[13]		7.25%	^[11],[13]		7.25%	^[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14],[16]				$ 24,080
Ending balance	^[11],[13]	$ 24,378			$ 24,378
Investment, Identifier [Axis]: Acumera, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.00%	^{[11],[12],[13]}		7.00%	^{[11],[12],[13]}		7.50%	^{[14],[15],[16]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[14],[15],[16]}				$ (2)
Ending balance	^{[11],[12],[13]}	$ (1)			$ (1)
Investment, Identifier [Axis]: Acumera, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.44%	^[11],[13]		12.44%	^[11],[13]		12.98%	^[14],[16]
Spread		7.00%	^[11],[13]		7.00%	^[11],[13]		7.50%	^[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14],[16]				$ 24,796
Ending balance	^[11],[13]	$ 24,482			24,482
Investment, Identifier [Axis]: Acumera, Inc., Warrants
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14],[23]				110
Ending balance	^[11],[24]	$ 110			$ 110
Investment, Identifier [Axis]: Adams Publishing Group, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.00%	^{[11],[13],[25]}		11.00%	^{[11],[13],[25]}		11.00%	^{[14],[16],[26]}
Spread		7.00%	^{[11],[13],[25]}		7.00%	^{[11],[13],[25]}		7.00%	^{[14],[16],[26]}
PIK Rate		1.00%	^{[11],[13],[25]}		1.00%	^{[11],[13],[25]}		1.00%	^{[14],[16],[26]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[14],[16],[26]}				$ 7,684
Ending balance	^{[11],[13],[25]}	$ 7,582			$ 7,582
Investment, Identifier [Axis]: Adams Publishing Group, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.00%	^{[11],[13],[25]}		11.00%	^{[11],[13],[25]}		11.00%	^{[14],[16],[26]}
Spread		7.00%	^{[11],[13],[25]}		7.00%	^{[11],[13],[25]}		7.00%	^{[14],[16],[26]}
PIK Rate		1.00%	^{[11],[13],[25]}		1.00%	^{[11],[13],[25]}		1.00%	^{[14],[16],[26]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[14],[16],[26]}				$ 20,784
Ending balance	^{[11],[13],[25]}	$ 19,253			$ 19,253
Investment, Identifier [Axis]: American Health Staffing Group, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		5.00%	^{[11],[12],[13]}		5.00%	^{[11],[12],[13]}		5.00%	^{[14],[15],[16]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[14],[15],[16]}				$ (8)
Ending balance	^{[11],[12],[13]}	$ (6)			$ (6)
Investment, Identifier [Axis]: American Health Staffing Group, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.61%	^[11],[13]		11.61%	^[11],[13]		13.50%	^[14],[16]
Spread		6.00%	^[11],[13]		6.00%	^[11],[13]		5.00%	^[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14],[16]				$ 6,550
Ending balance	^[11],[13]	$ 6,517			$ 6,517
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.20%	^[11],[13]		15.20%	^[11],[13]		15.29%	^[14],[16]
Spread		9.75%	^[11],[13]		9.75%	^[11],[13]		9.75%	^[14],[16]
PIK Rate		15.20%	^[11],[13]		15.20%	^[11],[13]		15.29%	^[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14],[16]				$ 5,495
Ending balance	^[11],[13]	$ 5,787			$ 5,787
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.20%	^[11],[13]		15.20%	^[11],[13]		15.29%	^[14],[16]
Spread		9.75%	^[11],[13]		9.75%	^[11],[13]		9.75%	^[14],[16]
PIK Rate		15.20%	^[11],[13]		15.20%	^[11],[13]		15.29%	^[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14],[16]				$ 8,922
Ending balance	^[11],[13]	$ 9,416			$ 9,416
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		17.20%	^{[11],[13],[21]}		17.20%	^{[11],[13],[21]}		17.29%	^{[14],[16],[22]}
Spread		11.75%	^{[11],[13],[21]}		11.75%	^{[11],[13],[21]}		11.75%	^{[14],[16],[22]}
PIK Rate		17.20%	^{[11],[13],[21]}		17.20%	^{[11],[13],[21]}		17.29%	^{[14],[16],[22]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[14],[16],[22]}				$ 3,369
Ending balance	^{[11],[13],[21]}	$ 3,526			$ 3,526
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		17.20%	^{[11],[13],[21]}		17.20%	^{[11],[13],[21]}		17.29%	^{[14],[16],[22]}
Spread		11.75%	^{[11],[13],[21]}		11.75%	^{[11],[13],[21]}		11.75%	^{[14],[16],[22]}
PIK Rate		17.20%	^{[11],[13],[21]}		17.20%	^{[11],[13],[21]}		17.29%	^{[14],[16],[22]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[14],[16],[22]}				$ 5,482
Ending balance	^{[11],[13],[21]}	$ 5,736			5,736
Investment, Identifier [Axis]: American Teleconferencing Services, Ltd., Secured Debt 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[7],[22],[27]}				134
Ending balance	^{[8],[21],[28]}	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],[22],[27]}				647
Ending balance	^{[8],[21],[28]}	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)					(4,370)		0
Amount of Interest, Fees or Dividends Credited to Income					(2,811)		171
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					(60,384)		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)					4,370		0
Amount of Interest, Fees or Dividends Credited to Income					2,811		(171)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					60,384		(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		$ 5,620		$ 0	$ 5,620		0
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Preferred Member Units 1.1
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					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%			14.13%			14.13%
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							566
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							566
Gross Reductions							0
Ending balance		$ 0		$ 4,070	0		$ 4,070
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)					760
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					760
Gross Reductions					0
Ending balance		$ 5,620			$ 5,620
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.38%	^[13]		15.38%	^[13]		15.38%	^[16]
Spread		10.00%	^[13]	10.00%	10.00%	^[13]	10.00%	10.00%	^[16]
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					219	^[16]	(3)
Gross Additions					1		1
Gross Reductions					0		0
Ending balance		$ 220	^[13]	$ (2)	$ 220	^[13]	$ (2)
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.38%	^[13]	15.25%	15.38%	^[13]	15.25%	15.38%	^[16]
Spread		10.00%	^[13]	10.00%	10.00%	^[13]	10.00%	10.00%	^[16]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					346		379
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,084	^[16]	4,545
Gross Additions					34		39
Gross Reductions					195		140
Ending balance		$ 3,923	^[13]	$ 4,444	3,923	^[13]	4,444
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]: ArborWorks, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14]				0
Ending balance	^[11]	0			0
Investment, Identifier [Axis]: ArborWorks, LLC, Preferred Equity 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14]				14,060
Ending balance	^[11]	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	^[14]				0
Ending balance	^[11]	$ 0			$ 0
Investment, Identifier [Axis]: ArborWorks, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.00%	^[11],[13]		15.00%	^[11],[13]		15.00%	^[14]
PIK Rate		15.00%	^[11],[13]		15.00%	^[11],[13]		15.00%	^[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14]				$ 1,907
Ending balance	^[11],[13]	$ 3,817			$ 3,817
Investment, Identifier [Axis]: ArborWorks, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.99%	^[11],[13]		11.99%	^[11],[13]		12.04%	^[14],[16]
Spread		6.50%	^[11],[13]		6.50%	^[11],[13]		6.50%	^[14],[16]
PIK Rate		11.99%	^[11],[13]		11.99%	^[11],[13]		12.04%	^[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14],[16]				$ 7,149
Ending balance	^[11],[13]	$ 7,592			7,592
Investment, Identifier [Axis]: Archer Systems, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14]				2,230
Ending balance	^[11]	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%
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				16.17%			16.17%
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							63
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							800
Gross Additions							0
Gross Reductions							0
Ending balance				$ 800			$ 800
Investment, Identifier [Axis]: BBB Tank Services, LLC, Unsecured Debt 2
Schedule of Investments [Line Items]
Total Rate				16.17%			16.17%
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							317
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	^[11]	$ 2,333			$ 2,333
Investment, Identifier [Axis]: BP Loenbro Holdings Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	^[11],[13]	11.44%			11.44%
Spread	^[11],[13]	6.00%			6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	^[11],[13]	$ 1,632			$ 1,632
Investment, Identifier [Axis]: BP Loenbro Holdings Inc., Secured Debt 2
Schedule of Investments [Line Items]
Spread	^{[11],[12],[13]}	6.00%			6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	^{[11],[12],[13]}	$ (25)			$ (25)
Investment, Identifier [Axis]: BP Loenbro Holdings Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	^[11],[13]	11.43%			11.43%
Spread	^[11],[13]	6.00%			6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	^[11],[13]	$ 26,241			$ 26,241
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)					580		(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	^[14]	3,320
Gross Additions					580		0
Gross Reductions					0		280
Ending balance		$ 4,720	^[11],[19]	$ 3,040	$ 4,720	^[11],[19]	$ 3,040
Investment, Identifier [Axis]: Barfly Ventures, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		7.00%	^[11]	7.00%	7.00%	^[11]	7.00%	7.00%	^[14]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					26		44
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					711	^[14]	711
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 711	^[11]	$ 711	711	^[11]	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)					(430)		2,055
Amount of Interest, Fees or Dividends Credited to Income					407		574
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					6,150	^[18]	4,095
Gross Additions					0		2,055
Gross Reductions					430		0
Ending balance		$ 5,720	^[19]	6,150	$ 5,720	^[19]	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)		7
Amount of Interest, Fees or Dividends Credited to Income					18		1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	^[15]	(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%
Amount of Realized Gain/(Loss)					$ 0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					14		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					270		0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 270		$ 0	$ 270		$ 0
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)		78
Amount of Interest, Fees or Dividends Credited to Income					545		583
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					10,575		10,933
Gross Additions					10		92
Gross Reductions					67		450
Ending balance		$ 10,518		$ 10,575	10,518		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	^[14],[29]				200
Ending balance	^[11]	878			878
Investment, Identifier [Axis]: Berry Aviation, Inc., Preferred Member Units 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[14],[18],[29]}				2,560
Ending balance	^[11],[30]	10			10
Investment, Identifier [Axis]: Berry Aviation, Inc., Preferred Member Units 3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	^[11],[30]	$ 110			$ 110
Investment, Identifier [Axis]: Bettercloud, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		10.25%	^{[11],[12],[13]}		10.25%	^{[11],[12],[13]}		7.25%	^{[14],[15],[16]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[14],[15],[16]}				$ (62)
Ending balance	^{[11],[12],[13]}	$ (55)			$ (55)
Investment, Identifier [Axis]: Bettercloud, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.60%	^[11],[13]		15.60%	^[11],[13]		12.64%	^[14],[16]
Spread		10.25%	^[11],[13]		10.25%	^[11],[13]		7.25%	^[14],[16]
PIK Rate		9.25%	^[11],[13]		9.25%	^[11],[13]		6.25%	^[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14],[16]				$ 27,550
Ending balance	^[11],[13]	$ 28,880			28,880
Investment, Identifier [Axis]: Binswanger Enterprises, LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14]				120
Ending balance	^[11]	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		13.94%	^[8]		13.94%	^[8]		16.00%	^[7],[16]
Spread		8.50%	^[8]		8.50%	^[8]		7.50%	^[7],[16]
PIK Rate		12.94%	^[8]		12.94%	^[8]		15.00%	^[7],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[7],[16]				$ 1,767
Ending balance	^[8]	$ 164			$ 164
Investment, Identifier [Axis]: Bluestem Brands, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		16.00%	^[8],[13]		16.00%	^[8],[13]		13.96%	^[7],[16]
Spread		7.50%	^[8],[13]		7.50%	^[8],[13]		8.50%	^[7],[16]
PIK Rate		15.00%	^[8],[13]		15.00%	^[8],[13]		12.96%	^[7],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[7],[16]				$ 3,446
Ending balance	^[8],[13]	$ 2,588			$ 2,588
Investment, Identifier [Axis]: Bluestem Brands, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	^[8],[13]	13.94%			13.94%
Spread	^[8],[13]	8.50%			8.50%
PIK Rate	^[8],[13]	12.94%			12.94%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	^[8],[13]	$ 3,589			$ 3,589
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)		(620)
Amount of Interest, Fees or Dividends Credited to Income					18		41
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		620
Ending balance		$ 310	^[19]	$ 2,350	$ 310	^[19]	$ 2,350
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					16		16
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%	^[19]	8.00%	8.00%	^[19]	8.00%	8.00%	^[18]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					3,690		(300)
Amount of Interest, Fees or Dividends Credited to Income					1,390		2,137
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					31,020	^[18]	31,420
Gross Additions					3,690		0
Gross Reductions					0		300
Ending balance		$ 34,710	^[19]	$ 31,120	$ 34,710	^[19]	31,120
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.43%			13.43%			14.48%	^[16],[31]
Spread		8.05%			8.05%			9.11%	^[16],[31]
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					(27)
Amount of Interest, Fees or Dividends Credited to Income					6,787
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[16],[31]				96,556
Gross Additions					7,563
Gross Reductions					1,283
Ending balance		$ 102,836			102,836
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt 1
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	^[12]	$ 0	$ 0	^[12]	$ 0
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.43%	^[13],[32]	14.37%	13.43%	^[13],[32]	14.37%
Spread		8.05%	^[13],[32]	9.19%	8.05%	^[13],[32]	9.19%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(71)
Amount of Interest, Fees or Dividends Credited to Income							6,976
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							99,194
Gross Additions							71
Gross Reductions							1,390
Ending balance		$ 102,836	^[13],[32]	$ 97,875	$ 102,836	^[13],[32]	97,875
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					95
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance		0			0
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[14],[33],[34]}				0
Ending balance	^{[11],[35],[36]}	0			0
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[14],[33],[34]}				500
Ending balance	^{[11],[35],[36]}	$ 500			$ 500
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.00%	^{[11],[12],[13],[35],[36]}		7.00%	^{[11],[12],[13],[35],[36]}		7.00%	^{[14],[15],[16],[33],[34]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[14],[15],[16],[33],[34]}				$ (25)
Ending balance	^{[11],[12],[13],[35],[36]}	$ (22)			$ (22)
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.45%	^{[11],[13],[35],[36]}		11.45%	^{[11],[13],[35],[36]}		11.54%	^{[14],[16],[33],[34]}
Spread		6.00%	^{[11],[13],[35],[36]}		6.00%	^{[11],[13],[35],[36]}		6.00%	^{[14],[16],[33],[34]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[14],[16],[33],[34]}				$ 6,405
Ending balance	^{[11],[13],[35],[36]}	$ 6,357			$ 6,357
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		13.45%	^{[11],[13],[35],[36]}		13.45%	^{[11],[13],[35],[36]}		13.54%	^{[14],[16],[33],[34]}
Spread		8.00%	^{[11],[13],[35],[36]}		8.00%	^{[11],[13],[35],[36]}		8.00%	^{[14],[16],[33],[34]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[14],[16],[33],[34]}				$ 6,405
Ending balance	^{[11],[13],[35],[36]}	$ 6,357			$ 6,357
Investment, Identifier [Axis]: Brainworks Software, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.75%	^{[11],[13],[21],[28]}		15.75%	^{[11],[13],[21],[28]}		15.75%	^{[14],[16],[22],[27]}
Spread		7.25%	^{[11],[13],[21],[28]}		7.25%	^{[11],[13],[21],[28]}		7.25%	^{[14],[16],[22],[27]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[14],[16],[22],[27]}				$ 761
Ending balance	^{[11],[13],[21],[28]}	$ 761			$ 761
Investment, Identifier [Axis]: Brainworks Software, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.75%	^{[11],[13],[21],[28]}		15.75%	^{[11],[13],[21],[28]}		15.75%	^{[14],[16],[22],[27]}
Spread		7.25%	^{[11],[13],[21],[28]}		7.25%	^{[11],[13],[21],[28]}		7.25%	^{[14],[16],[22],[27]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[14],[16],[22],[27]}				$ 1,075
Ending balance	^{[11],[13],[21],[28]}	$ 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)					(320)		(720)
Amount of Interest, Fees or Dividends Credited to Income					60		60
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,620	^[18]	7,080
Gross Additions					0		0
Gross Reductions					320		720
Ending balance		$ 5,300	^[19]	$ 6,360	$ 5,300	^[19]	$ 6,360
Investment, Identifier [Axis]: Brewer Crane Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		15.48%	^[13]	15.17%	15.48%	^[13]	15.17%	15.46%	^[16]
Spread		10.00%	^[13]	10.00%	10.00%	^[13]	10.00%	10.00%	^[16]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		(63)
Amount of Interest, Fees or Dividends Credited to Income					429		429
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,498	^[16]	5,964
Gross Additions					14		0
Gross Reductions					248		311
Ending balance		$ 5,264	^[13]	$ 5,653	5,264	^[13]	5,653
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					50		50
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,000	^[18],[29]	1,000
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 1,000	^[19],[30]	$ 1,000	$ 1,000	^[19],[30]	$ 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%		13.00%	13.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					579		576
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					8,813		8,813
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 8,813		$ 8,813	$ 8,813		$ 8,813
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%		13.00%	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					66		65
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,000		1,000
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 1,000		$ 1,000	1,000		1,000
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Warrants
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[9]				4,290
Ending balance	^[10]	4,230			4,230
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)					(25)		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					25		0
Ending balance		1,783		1,874	1,783		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)					(35)		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					35		0
Ending balance		2,447		$ 2,576	2,447		$ 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	^{[33],[37],[38]}				4,080
Ending balance	^{[35],[39],[40]}	3,614			3,614
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	^{[18],[33],[37],[38]}				4,358
Ending balance	^{[19],[35],[39],[40]}	4,308			4,308
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	^{[18],[33],[37],[38]}				2,448
Ending balance	^{[19],[35],[39],[40]}	$ 2,711			$ 2,711
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, Secured Debt
Schedule of Investments [Line Items]
Total Rate				12.00%			12.00%	12.00%	^[27]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							1,044
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 12,144	^[27]	12,337
Gross Additions							0
Gross Reductions							373
Ending balance				$ 11,964			11,964
Investment, Identifier [Axis]: Buca C, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		14.00%			14.00%
PIK Rate		14.00%			14.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		$ 58			$ 58
Investment, Identifier [Axis]: Buca C, LLC, Secured Debt 1.1
Schedule of Investments [Line Items]
Total Rate		14.00%			14.00%
PIK Rate		14.00%			14.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					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					371
Gross Reductions					0
Ending balance		$ 12,515			$ 12,515
Investment, Identifier [Axis]: Buca C, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	^[21],[28]	14.00%			14.00%
PIK Rate	^[21],[28]	14.00%			14.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	^[21],[28]	$ 12,515			$ 12,515
Investment, Identifier [Axis]: Buca C, LLC, Secured Debt 2.1
Schedule of Investments [Line Items]
Total Rate		14.00%			14.00%
PIK Rate		14.00%			14.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					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					58
Gross Reductions					0
Ending balance		$ 58			$ 58
Investment, Identifier [Axis]: Burning Glass Intermediate Holding Company, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	^[14],[16]							10.46%
Spread		5.00%	^{[11],[12],[13]}		5.00%	^{[11],[12],[13]}		5.00%	^[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14],[16]				$ 465
Ending balance	^{[11],[12],[13]}	$ 0			$ 0
Investment, Identifier [Axis]: Burning Glass Intermediate Holding Company, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.44%	^[11],[13]		10.44%	^[11],[13]		10.46%	^[14],[16]
Spread		5.00%	^[11],[13]		5.00%	^[11],[13]		5.00%	^[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14],[16]				$ 19,681
Ending balance	^[11],[13]	$ 19,885			19,885
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)		1,570
Amount of Interest, Fees or Dividends Credited to Income					1,235		1,647
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					50,130	^[18]	49,002
Gross Additions					0		1,568
Gross Reductions					590		0
Ending balance		$ 49,540	^[19]	50,570	$ 49,540	^[19]	50,570
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		7.00%	^{[11],[12],[13]}		7.00%	^{[11],[12],[13]}		7.00%	^{[14],[15],[16]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[14],[15],[16]}				$ (66)
Ending balance	^{[11],[12],[13]}	$ (57)			$ (57)
Investment, Identifier [Axis]: CQ Fluency, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Spread		7.00%	^{[11],[12],[13]}		7.00%	^{[11],[12],[13]}		7.00%	^{[14],[15],[16]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[14],[15],[16]}				$ (66)
Ending balance	^{[11],[12],[13]}	$ (57)			$ (57)
Investment, Identifier [Axis]: CQ Fluency, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.44%	^[11],[13]		12.44%	^[11],[13]		12.45%	^[14],[16]
Spread		7.00%	^[11],[13]		7.00%	^[11],[13]		7.00%	^[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14],[16]				$ 10,920
Ending balance	^[11],[13]	$ 11,001			11,001
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)					(189)		(80)
Amount of Interest, Fees or Dividends Credited to Income					20		103
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,980	^[18]	2,210
Gross Additions					0		0
Gross Reductions					190		80
Ending balance		$ 1,790	^[19]	2,130	$ 1,790	^[19]	2,130
Investment, Identifier [Axis]: California Splendor Holdings LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Total Rate		15.00%	^[19]		15.00%	^[19]		15.00%	^[18]
PIK Rate		15.00%	^[19]		15.00%	^[19]		15.00%	^[18]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							(2,060)
Amount of Interest, Fees or Dividends Credited to Income							125
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 4,601	^[18]	25,495
Gross Additions							0
Gross Reductions							2,060
Ending balance		$ 10,173	^[19]	$ 23,435	10,173	^[19]	$ 23,435
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					125
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					15,695
Gross Additions					0
Gross Reductions					0
Ending balance		15,695			15,695
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							301
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					15,695	^[18]	3,994
Gross Additions							301
Gross Reductions							0
Ending balance		$ 15,695	^[19]	$ 4,295	$ 15,695	^[19]	$ 4,295
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					572
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,601
Gross Additions					5,572
Gross Reductions					0
Ending balance		$ 10,173			$ 10,173
Investment, Identifier [Axis]: California Splendor Holdings LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		14.00%		15.25%	14.00%		15.25%	15.69%	^[16],[18]
Spread				10.00%			10.00%	10.00%	^[16],[18]
PIK Rate		4.00%			4.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(79)		(7)
Amount of Interest, Fees or Dividends Credited to Income					2,088		2,127
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					27,655	^[16],[18]	28,000
Gross Additions					299		7
Gross Reductions					79		7
Ending balance		$ 27,875		$ 28,000	27,875		28,000
Investment, Identifier [Axis]: California Splendor Holdings LLC, Secured Debt 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	^[12]	$ 0			$ 0
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		$ 27,875			$ 27,875
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		11.38%	^[13]	11.25%	11.38%	^[13]	11.25%	11.38%	^[16]
Spread		6.00%	^[13]	6.00%	6.00%	^[13]	6.00%	6.00%	^[16]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					53		10
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					881	^[16]	(9)
Gross Additions					1,803		451
Gross Reductions					1,800		0
Ending balance		$ 884	^[13]	$ 442	$ 884	^[13]	$ 442
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					1,330		1,293
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					19,906		20,090
Gross Additions					21		20
Gross Reductions					180		0
Ending balance		$ 19,747		$ 20,110	19,747		20,110
Investment, Identifier [Axis]: CaseWorthy, Inc., Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14]				246
Ending balance	^[11]	$ 490			490
Investment, Identifier [Axis]: CaseWorthy, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread	^{[14],[15],[16]}							6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[14],[15],[16]}				(8)
Investment, Identifier [Axis]: CaseWorthy, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	^[14],[16]							11.61%
Spread	^[14],[16]							6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14],[16]				7,933
Investment, Identifier [Axis]: CaseWorthy, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	^[14],[16]							11.61%
Spread	^[14],[16]							6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14],[16]				$ 6,102
Investment, Identifier [Axis]: Central Moloney, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	^[11],[13]	12.08%			12.08%
Spread	^[11],[13]	6.75%			6.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	^[11],[13]	$ 39,404			$ 39,404
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)					460		1,700
Amount of Interest, Fees or Dividends Credited to Income					60		60
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					11,040		8,700
Gross Additions					460		1,700
Gross Reductions					0		0
Ending balance		$ 11,500		$ 10,400	$ 11,500		$ 10,400
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		10.00%	^[12],[13]	9.00%	10.00%	^[12],[13]	9.00%	9.00%	^[15],[16]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					6		6
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	^[15],[16]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0	^[12],[13]	$ 0	$ 0	^[12],[13]	$ 0
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.48%	^[13]	14.25%	15.48%	^[13]	14.25%	14.48%	^[16]
Spread		10.00%	^[13]	9.00%	10.00%	^[13]	9.00%	9.00%	^[16]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							64
Amount of Interest, Fees or Dividends Credited to Income							1,058
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 17,574	^[16]	14,954
Gross Additions							76
Gross Reductions							0
Ending balance		$ 20,462	^[13]	$ 15,030	$ 20,462	^[13]	15,030
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 2.1
Schedule of Investments [Line Items]
Total Rate		15.48%			15.48%
Spread		10.00%			10.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					223
Amount of Interest, Fees or Dividends Credited to Income					1,383
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)					710		1,020
Amount of Interest, Fees or Dividends Credited to Income					3,396		1,491
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					29,320	^[18]	22,920
Gross Additions					710		1,020
Gross Reductions					0		0
Ending balance		30,030	^[19]	23,940	30,030	^[19]	23,940
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)					290		120
Amount of Interest, Fees or Dividends Credited to Income					46		46
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,860	^[18],[29]	2,710
Gross Additions					290		120
Gross Reductions					0		0
Ending balance		$ 3,150	^[19],[30]	$ 2,830	$ 3,150	^[19],[30]	$ 2,830
Investment, Identifier [Axis]: Chamberlin Holding LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.00%	^[12],[13]	6.00%	6.00%	^[12],[13]	6.00%	6.00%	^[15],[16]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(45)		77
Amount of Interest, Fees or Dividends Credited to Income					49		4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	^[15],[16]	0
Gross Additions					45		0
Gross Reductions					45		0
Ending balance		$ 0	^[12],[13]	$ 0	$ 0	^[12],[13]	$ 0
Investment, Identifier [Axis]: Chamberlin Holding LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.49%	^[13]	13.36%	13.49%	^[13]	13.36%	13.49%	^[16]
Spread		8.00%	^[13]	8.00%	8.00%	^[13]	8.00%	8.00%	^[16]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(1)		(6)
Amount of Interest, Fees or Dividends Credited to Income					1,066		1,092
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					15,620	^[16]	16,945
Gross Additions					1		6
Gross Reductions					1		544
Ending balance		$ 15,620	^[13]	$ 16,407	$ 15,620	^[13]	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		12.58%	^{[11],[13],[20]}		12.58%	^{[11],[13],[20]}		12.60%	^{[14],[16],[41]}
Spread		7.00%	^{[11],[13],[20]}		7.00%	^{[11],[13],[20]}		7.00%	^{[14],[16],[41]}
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[14],[16],[41]}				$ 1,988
Ending balance	^{[11],[13],[20]}	$ 4,394			$ 4,394
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.55%	^[11],[13]		12.55%	^[11],[13]		12.66%	^[14],[16]
Spread		7.00%	^[11],[13]		7.00%	^[11],[13]		7.00%	^[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14],[16]				$ 35,064
Ending balance	^[11],[13]	$ 34,272			$ 34,272
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.55%	^[11],[13]		12.55%	^[11],[13]		12.66%	^[14],[16]
Spread		7.00%	^[11],[13]		7.00%	^[11],[13]		7.00%	^[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14],[16]				$ 1,943
Ending balance	^[11],[13]	$ 1,899			$ 1,899
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		12.55%	^[11],[13]		12.55%	^[11],[13]		12.66%	^[14],[16]
Spread		7.00%	^[11],[13]		7.00%	^[11],[13]		7.00%	^[14],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^[14],[16]				$ 4,695
Ending balance	^[11],[13]	$ 4,589			4,589
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)		460
Amount of Interest, Fees or Dividends Credited to Income					155		246
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					15,690	^[18]	13,340
Gross Additions					0		460
Gross Reductions					110		0
Ending balance		$ 15,580	^[19]	$ 13,800	$ 15,580	^[19]	$ 13,800
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)					(244)		(17)
Amount of Interest, Fees or Dividends Credited to Income					528		300
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,694		5,694
Gross Additions					244		17
Gross Reductions					244		17
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)					1,010		(1,840)
Amount of Interest, Fees or Dividends Credited to Income					422		275
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,200	^[18]	8,220
Gross Additions					1,010		0
Gross Reductions					0		1,840
Ending balance		6,210	^[19]	6,380	6,210	^[19]	6,380
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	^[29]	610
Gross Additions					0		519
Gross Reductions					179		0
Ending balance		950	^[30]	1,129	950	^[30]	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					1		1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	^[15]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0	^[12]	$ 0	$ 0	^[12]	$ 0
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.50%		11.50%	11.50%		11.50%	11.50%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		(64)
Amount of Interest, Fees or Dividends Credited to Income					512		621
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					8,422		10,440
Gross Additions					0		18
Gross Reductions					621		824
Ending balance		$ 7,801		$ 9,634	$ 7,801		$ 9,634
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					51		52
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,004		1,039
Gross Additions					0		0
Gross Reductions					19		17
Ending balance		$ 985		$ 1,022	985		1,022
Investment, Identifier [Axis]: Clarius BIGS, LLC, Secured Debt
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	^{[14],[22],[27]}				16
Ending balance	^{[11],[21],[28]}	16			16
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)					(7,771)		(6,410)
Amount of Interest, Fees or Dividends Credited to Income					1,470		4,745
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					16,000	^[18]	24,637
Gross Additions					10,365		0
Gross Reductions					23,896		6,407
Ending balance		$ 2,469	^[19]	$ 18,230	$ 2,469	^[19]	$ 18,230
Investment, Identifier [Axis]: Classic H&G Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				11.25%			11.25%	11.69%	^[16]
Spread		6.00%		6.00%	6.00%		6.00%	6.00%	^[16]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					181		260
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,560	^[16]	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)		(21)
Amount of Interest, Fees or Dividends Credited to Income					654		797
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					19,274		19,274
Gross Additions					50		21
Gross Reductions					19,324		21
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)					2,010		6,940
Amount of Interest, Fees or Dividends Credited to Income					1,508		1,446
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					72,470	^[18],[29]	58,180
Gross Additions					2,010		6,940
Gross Reductions					0		0
Ending balance		74,480	^[19],[30]	65,120	74,480	^[19],[30]	65,120
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)					4		12
Amount of Interest, Fees or Dividends Credited to Income					31		2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	^[15]	0
Gross Additions					1,264		0
Gross Reductions					1,264		0
Ending balance		$ 0	^[12]	$ 0	$ 0	^[12]	$ 0
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%		12.50%	12.50%		12.50%	12.50%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(6)		39
Amount of Interest, Fees or Dividends Credited to Income					2,604		582
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					42,073		0
Gross Additions					6		46,312
Gross Reductions					1,278		0
Ending balance		$ 40,801		$ 46,312	40,801		$ 46,312
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Spread				10.50%			10.50%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(19)
Amount of Interest, Fees or Dividends Credited to Income							96
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							1,462
Gross Additions							32
Gross Reductions							1,494
Ending balance				$ 0			$ 0
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 4
Schedule of Investments [Line Items]
Spread				10.50%			10.50%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(280)
Amount of Interest, Fees or Dividends Credited to Income							2,683
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							40,801
Gross Additions							0
Gross Reductions							40,801
Ending balance				$ 0			0
Investment, Identifier [Axis]: Colonial Electric Company LLC, Preferred Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	^[19]	11,740			11,740
Investment, Identifier [Axis]: Colonial Electric Company LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(1,440)		1,440
Amount of Interest, Fees or Dividends Credited to Income					1,440		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,400		0
Gross Additions					0		2,400
Gross Reductions					2,400		0
Ending balance		0		2,400	0		2,400
Investment, Identifier [Axis]: Colonial Electric Company LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					4,060		(1,480)
Amount of Interest, Fees or Dividends Credited to Income					556		(1,179)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					7,680		9,160
Gross Additions					4,060		0
Gross Reductions					0		1,480
Ending balance		11,740		7,680	11,740		7,680
Investment, Identifier [Axis]: Colonial Electric Company LLC, Secured Debt 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					4		47
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	^[15]	0
Gross Additions					0		1,600