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

v3.23.3

Consolidated Schedule of Investments In and Advances to Affiliates (Details) - USD ($) $ in Thousands		3 Months Ended			9 Months Ended
		Sep. 30, 2023		Sep. 30, 2022	Sep. 30, 2023		Sep. 30, 2022	Dec. 31, 2022		Dec. 31, 2021
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		$ 664		$ 5,031	$ (103,223)		$ 3,302
Amount of Unrealized Gain/(Loss)		27,011		(10,081)	167,070		(19,922)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[1]				4,102,177
Ending balance	[2]	4,294,722			4,294,722
Fair value		4,294,722	[2]		4,294,722	[2]		$ 4,102,177	[1]
Control investments
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		546		(5,822)	(50,532)		(5,822)
Amount of Unrealized Gain/(Loss)		29,838		7,517	122,779		20,618
Amount of Interest, Fees or Dividends Credited to Income					145,485		110,751
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,703,172	[1],[3]	1,489,257
Gross Additions					419,339		280,134
Gross Reductions					210,406		128,214
Ending balance		1,927,019	[2],[4]	1,599,429	1,927,019	[2],[4]	1,599,429
Fair value		1,927,019	[2],[4]	1,599,429	1,927,019	[2],[4]	1,599,429	1,703,172	[1],[3]	$ 1,489,257
Control investments | Midwest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		470,009		346,535	470,009		346,535
Fair value		$ 470,009		$ 346,535	$ 470,009		$ 346,535
Net assets, percentage		24.40%		21.70%	24.40%		21.70%
Control investments | Northeast
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance				$ 144,681			$ 144,681
Fair value				$ 144,681			$ 144,681
Net assets, percentage				9.00%			9.00%
Control investments | Southeast
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		$ 53,155		$ 16,360	$ 53,155		$ 16,360
Fair value		$ 53,155		$ 16,360	$ 53,155		$ 16,360
Net assets, percentage		2.80%		1.00%	2.80%		1.00%
Control investments | Southwest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		$ 691,921		$ 593,513	$ 691,921		$ 593,513
Fair value		$ 691,921		$ 593,513	$ 691,921		$ 593,513
Net assets, percentage		35.90%		37.10%	35.90%		37.10%
Control investments | West
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		$ 426,218		$ 498,340	$ 426,218		$ 498,340
Fair value		$ 426,218		$ 498,340	$ 426,218		$ 498,340
Net assets, percentage		22.10%		31.20%	22.10%		31.20%
Control investments | Northeast Region and Canada
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		$ 285,716			$ 285,716
Fair value		$ 285,716			$ 285,716
Net assets, percentage		14.80%			14.80%
Affiliate investments
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)		$ (228)		$ 601	$ (16,495)		$ 1,340
Amount of Unrealized Gain/(Loss)		5,188		(1,069)	26,859		3,703
Amount of Interest, Fees or Dividends Credited to Income					53,722		38,300
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					618,359	[1],[5]	549,214
Gross Additions					191,033		92,606
Gross Reductions					228,536		56,642
Ending balance		565,942	[2],[6]	552,581	565,942	[2],[6]	552,581
Fair value		565,942	[2],[6]	552,581	565,942	[2],[6]	552,581	618,359	[1],[5]	549,214
Affiliate investments | Midwest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		78,619		67,491	78,619		67,491
Fair value		$ 78,619		$ 67,491	$ 78,619		$ 67,491
Net assets, percentage		13.90%		12.20%	13.90%		12.20%
Affiliate investments | Northeast
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance				$ 105,372			$ 105,372
Fair value				$ 105,372			$ 105,372
Net assets, percentage				19.10%			19.10%
Affiliate investments | Southeast
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		$ 176,508		$ 196,507	$ 176,508		$ 196,507
Fair value		$ 176,508		$ 196,507	$ 176,508		$ 196,507
Net assets, percentage		31.20%		35.60%	31.20%		35.60%
Affiliate investments | Southwest
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		$ 77,756		$ 99,261	$ 77,756		$ 99,261
Fair value		$ 77,756		$ 99,261	$ 77,756		$ 99,261
Net assets, percentage		13.70%		18.00%	13.70%		18.00%
Affiliate investments | West
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		$ 134,388		$ 83,950	$ 134,388		$ 83,950
Fair value		$ 134,388		$ 83,950	$ 134,388		$ 83,950
Net assets, percentage		23.70%		15.20%	23.70%		15.20%
Affiliate investments | Northeast Region and Canada
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		$ 98,671			$ 98,671
Fair value		$ 98,671			$ 98,671
Net assets, percentage		17.40%			17.40%
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)					67		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					248		0
Gross Additions					67		244
Gross Reductions					0		0
Ending balance		$ 315		$ 244	315		244
Fair value		315		244	315		244	248		0
Investment, Identifier [Axis]: 2717 MH, L.P., LP Interests (2717 MH, L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					2,222		0
Amount of Unrealized Gain/(Loss)					(1,106)		1,979
Amount of Interest, Fees or Dividends Credited to Income					141		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					7,552		3,971
Gross Additions					2,796		3,171
Gross Reductions					4,452		0
Ending balance		5,896		7,142	5,896		7,142
Fair value		5,896		7,142	5,896		7,142	7,552		3,971
Investment, Identifier [Axis]: 423 HAR, LP, LP Interests (423 HAR, 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					750
Gross Reductions					0
Ending balance		750			750
Fair value		750			750			0
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		(2,004)
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]	2,079
Gross Additions					0		0
Gross Reductions					0		2,004
Ending balance		0	[8]	75	0	[8]	75
Fair value		$ 0	[8]	$ 75	0	[8]	$ 75	$ 0	[7]	2,079
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate				18.00%			18.00%	18.00%	[7]
PIK Rate				18.00%			18.00%	18.00%	[7]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							143
Amount of Interest, Fees or Dividends Credited to Income							1,492
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 11,550	[7]	9,794
Gross Additions							1,182
Gross Reductions							0
Ending balance				$ 10,976			10,976
Fair value				10,976			10,976	$ 11,550	[7]	9,794
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[8]	18.00%			18.00%
PIK Rate	[8]	18.00%			18.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					(20)
Amount of Interest, Fees or Dividends Credited to Income					46
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					394
Gross Reductions					15
Ending balance	[8]	$ 379			379
Fair value		$ 379	[8]		$ 379	[8]		0
Investment, Identifier [Axis]: AAC Holdings, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[8]	18.00%			18.00%
PIK Rate	[8]	18.00%			18.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					(671)
Amount of Interest, Fees or Dividends Credited to Income					1,739
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					11,550
Gross Additions					1,739
Gross Reductions					671
Ending balance	[8]	$ 12,618			12,618
Fair value		12,618	[8]		12,618	[8]		11,550
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		(1,865)
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]	1,940
Gross Additions					0		0
Gross Reductions					0		1,865
Ending balance		0	[8],[10]	75	0	[8],[10]	75
Fair value		$ 0	[8],[10]	75	$ 0	[8],[10]	75	$ 0	[7],[9]	1,940
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[12]	13.50%			13.50%
Spread		5.00%	[11],[12]		5.00%	[11],[12]		6.00%	[13],[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15],[16]				$ (39)
Ending balance	[11],[12]	$ 647			647
Fair value		$ 647	[11],[12]		$ 647	[11],[12]		$ (39)	[13],[14],[15],[16]
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[13],[14],[15]							10.20%
Spread		6.00%	[11],[12],[17],[18]		6.00%	[11],[12],[17],[18]		6.00%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 741
Ending balance	[11],[12],[17],[18]	$ (28)			(28)
Fair value		$ (28)	[11],[12],[17],[18]		$ (28)	[11],[12],[17],[18]		$ 741	[13],[14],[15]
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.42%	[11],[12],[17]		11.42%	[11],[12],[17]		10.58%	[13],[14],[15]
Spread		6.00%	[11],[12],[17]		6.00%	[11],[12],[17]		6.00%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 17,052
Ending balance	[11],[12],[17]	$ 19,864			19,864
Fair value		$ 19,864	[11],[12],[17]		$ 19,864	[11],[12],[17]		$ 17,052	[13],[14],[15]
Investment, Identifier [Axis]: AB Centers Acquisition Corporation, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	11.42%			11.42%
Spread	[11],[12],[17]	6.00%			6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 1,379			$ 1,379
Fair value	[11],[12],[17]	$ 1,379			$ 1,379
Investment, Identifier [Axis]: ADS Tactical, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.18%	[8],[12],[17]		11.18%	[8],[12],[17]		10.14%	[7],[15]
Spread		5.75%	[8],[12],[17]		5.75%	[8],[12],[17]		5.75%	[7],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]				$ 18,969
Ending balance	[8],[12],[17]	$ 17,244			17,244
Fair value		17,244	[8],[12],[17]		17,244	[8],[12],[17]		$ 18,969	[7],[15]
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	[19]				9,400
Gross Additions					7,200
Gross Reductions					16,600
Ending balance		0			0
Fair value		0			0			9,400	[19]
Investment, Identifier [Axis]: AFG Capital Group, LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							144
Gross Additions							0
Gross Reductions							144
Ending balance				0			0
Fair value				0			0			144
Investment, Identifier [Axis]: AFG Capital Group, LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							1,040
Amount of Interest, Fees or Dividends Credited to Income							200
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							7,740
Gross Additions							1,040
Gross Reductions							0
Ending balance				8,780			8,780
Fair value				8,780			8,780			7,740
Investment, Identifier [Axis]: AMEREQUIP LLC., Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				1,779
Ending balance	[11],[20]	1,930			1,930
Fair value		$ 1,930	[11],[20]		$ 1,930	[11],[20]		$ 1,779	[13]
Investment, Identifier [Axis]: AMEREQUIP LLC., Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.40%	[11],[12],[17],[18]		7.40%	[11],[12],[17],[18]		7.40%	[13],[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15],[16]				$ (137)
Ending balance	[11],[12],[17],[18]	$ (115)			(115)
Fair value		$ (115)	[11],[12],[17],[18]		$ (115)	[11],[12],[17],[18]		$ (137)	[13],[14],[15],[16]
Investment, Identifier [Axis]: AMEREQUIP LLC., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.87%	[11],[12],[17]		12.87%	[11],[12],[17]		11.72%	[13],[14],[15]
Spread		7.40%	[11],[12],[17]		7.40%	[11],[12],[17]		7.40%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 37,463
Ending balance	[11],[12],[17]	$ 32,116			32,116
Fair value		32,116	[11],[12],[17]		32,116	[11],[12],[17]		$ 37,463	[13],[14],[15]
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)					(700)		80
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					800		720
Gross Additions					0		80
Gross Reductions					700		0
Ending balance		100		800	100		800
Fair value		100		$ 800	100		$ 800	800		720
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)					88
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					250
Gross Reductions					0
Ending balance		250			250
Fair value		$ 250			$ 250			$ 0
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					40		24
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					400		200
Gross Additions					0		130
Gross Reductions					0		30
Ending balance		$ 400		$ 300	400		300
Fair value		$ 400		$ 300	$ 400		$ 300	$ 400		200
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)					(53)		0
Amount of Interest, Fees or Dividends Credited to Income					163		211
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,649		1,636
Gross Additions					1		12
Gross Reductions					53		0
Ending balance		$ 1,597		$ 1,648	1,597		1,648
Fair value		1,597		1,648	1,597		1,648	$ 1,649		1,636
Investment, Identifier [Axis]: ATS Operating, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				660
Ending balance	[11]	570			570
Fair value		$ 570	[11]		$ 570	[11]		$ 660	[13]
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	12.01%			12.01%
Spread		6.50%	[11],[12],[17]		6.50%	[11],[12],[17]		5.50%	[13],[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15],[16]				$ 0
Ending balance	[11],[12],[17]	$ 720			720
Fair value		$ 720	[11],[12],[17]		$ 720	[11],[12],[17]		$ 0	[13],[14],[15],[16]
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.01%	[11],[12],[17]		11.01%	[11],[12],[17]		9.32%	[13],[14],[15]
Spread		5.50%	[11],[12],[17]		5.50%	[11],[12],[17]		5.50%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 6,582
Ending balance	[11],[12],[17]	$ 6,660			6,660
Fair value		$ 6,660	[11],[12],[17]		$ 6,660	[11],[12],[17]		$ 6,582	[13],[14],[15]
Investment, Identifier [Axis]: ATS Operating, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		13.01%	[11],[12],[17]		13.01%	[11],[12],[17]		11.32%	[13],[14],[15]
Spread		7.50%	[11],[12],[17]		7.50%	[11],[12],[17]		7.50%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 6,593
Ending balance	[11],[12],[17]	$ 6,660			6,660
Fair value		6,660	[11],[12],[17]		6,660	[11],[12],[17]		$ 6,593	[13],[14],[15]
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	[13]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		0	[11]	0	0	[11]	0
Fair value		$ 0	[11]	$ 0	$ 0	[11]	$ 0	$ 0	[13]	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%	[13],[22]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(414)		(411)
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					634	[13],[22]	1,088
Gross Additions					188		147
Gross Reductions					414		435
Ending balance		$ 408	[11],[21]	$ 800	408	[11],[21]	800
Fair value		$ 408	[11],[21]	$ 800	$ 408	[11],[21]	$ 800	$ 634	[13],[22]	1,088
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%	[13],[22]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(417)		(576)
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,005	[13],[22]	1,917
Gross Additions					0		0
Gross Reductions					417		619
Ending balance		$ 588	[11],[21]	$ 1,298	588	[11],[21]	1,298
Fair value		588	[11],[21]	1,298	588	[11],[21]	1,298	$ 1,005	[13],[22]	1,917
Investment, Identifier [Axis]: ATX Networks Corp., Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					3,248		0
Amount of Unrealized Gain/(Loss)					(3,270)		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					3,270	[7]	0
Gross Additions					3,248		0
Gross Reductions					6,518		0
Ending balance		0		0	0		0
Fair value		$ 0		$ 0	$ 0		$ 0	$ 3,270	[7]	0
Investment, Identifier [Axis]: ATX Networks Corp., Secured Debt
Schedule of Investments [Line Items]
Total Rate				11.14%			11.14%	12.23%	[7],[15]
Spread		7.50%		7.50%	7.50%		7.50%	7.50%	[7],[15]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(134)		403
Amount of Interest, Fees or Dividends Credited to Income					886		562
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					6,343	[7],[15]	7,092
Gross Additions					575		631
Gross Reductions					6,918		1,016
Ending balance		$ 0		$ 6,707	0		6,707
Fair value		0		$ 6,707	0		$ 6,707	$ 6,343	[7],[15]	7,092
Investment, Identifier [Axis]: ATX Networks Corp., Unsecured Debt
Schedule of Investments [Line Items]
Total Rate				10.00%			10.00%	10.00%	[7]
PIK Rate				10.00%			10.00%	10.00%	[7]
Amount of Realized Gain/(Loss)					0		$ 0
Amount of Unrealized Gain/(Loss)					(306)		260
Amount of Interest, Fees or Dividends Credited to Income					1,160		242
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,598	[7]	1,963
Gross Additions					1,160		502
Gross Reductions					3,758		0
Ending balance		0		$ 2,465	0		2,465
Fair value		0		2,465	0		2,465	$ 2,598	[7]	1,963
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				406
Ending balance	[11]	892			892
Fair value		$ 892	[11]		$ 892	[11]		$ 406	[13]
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	12.67%			12.67%
Spread		7.25%	[11],[12],[17]		7.25%	[11],[12],[17]		7.25%	[13],[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15],[16]				$ (57)
Ending balance	[11],[12],[17]	$ 1,428			1,428
Fair value		$ 1,428	[11],[12],[17]		$ 1,428	[11],[12],[17]		$ (57)	[13],[14],[15],[16]
Investment, Identifier [Axis]: AVEX Aviation Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.80%	[11],[12],[17]		12.80%	[11],[12],[17]		12.17%	[13],[14],[15]
Spread		7.25%	[11],[12],[17]		7.25%	[11],[12],[17]		7.25%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 27,927
Ending balance	[11],[12],[17]	$ 23,898			23,898
Fair value		$ 23,898	[11],[12],[17]		$ 23,898	[11],[12],[17]		$ 27,927	[13],[14],[15]
Investment, Identifier [Axis]: Acousti Engineering Company of Florida, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.94%	[11],[12],[17]		13.94%	[11],[12],[17]		13.23%	[13],[15]
Spread		8.50%	[11],[12],[17]		8.50%	[11],[12],[17]		8.50%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 1,678
Ending balance	[11],[12],[17]	$ 1,678			1,678
Fair value		$ 1,678	[11],[12],[17]		$ 1,678	[11],[12],[17]		$ 1,678	[13],[15]
Investment, Identifier [Axis]: Acousti Engineering Company of Florida, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.94%	[11],[12],[17]		13.94%	[11],[12],[17]		13.23%	[13],[15]
Spread		8.50%	[11],[12],[17]		8.50%	[11],[12],[17]		8.50%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 9,891
Ending balance	[11],[12],[17]	$ 9,485			9,485
Fair value		$ 9,485	[11],[12],[17]		$ 9,485	[11],[12],[17]		$ 9,891	[13],[15]
Investment, Identifier [Axis]: Acousti Engineering Company of Florida, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		17.94%	[11],[12],[17]		17.94%	[11],[12],[17]		16.17%	[13],[15]
Spread		12.50%	[11],[12],[17]		12.50%	[11],[12],[17]		12.50%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 807
Ending balance	[11],[12],[17]	$ 764			764
Fair value		$ 764	[11],[12],[17]		$ 764	[11],[12],[17]		$ 807	[13],[15]
Investment, Identifier [Axis]: Acumera, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[13],[15]							13.88%
Spread		7.50%	[11],[12],[17],[18]		7.50%	[11],[12],[17],[18]		9.50%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 14,618
Ending balance	[11],[12],[17],[18]	$ (2)			(2)
Fair value		$ (2)	[11],[12],[17],[18]		$ (2)	[11],[12],[17],[18]		$ 14,618	[13],[15]
Investment, Identifier [Axis]: Acumera, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.99%	[11],[12],[17]		12.99%	[11],[12],[17]		13.57%	[13],[15]
Spread		7.50%	[11],[12],[17]		7.50%	[11],[12],[17]		9.00%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 4,368
Ending balance	[11],[12],[17]	$ 25,110			25,110
Fair value		25,110	[11],[12],[17]		25,110	[11],[12],[17]		$ 4,368	[13],[15]
Investment, Identifier [Axis]: Acumera, Inc., Warrants
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[23]	110			110
Fair value	[11],[23]	$ 110			$ 110
Investment, Identifier [Axis]: Adams Publishing Group, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.00%	[11],[12],[17],[24]		11.00%	[11],[12],[17],[24]		10.00%	[13],[15],[25]
Spread		7.00%	[11],[12],[17],[24]		7.00%	[11],[12],[17],[24]		6.00%	[13],[15],[25]
PIK Rate	[11],[12],[17],[24]	1.00%			1.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15],[25]				$ 4,729
Ending balance	[11],[12],[17],[24]	$ 7,029			7,029
Fair value		$ 7,029	[11],[12],[17],[24]		$ 7,029	[11],[12],[17],[24]		$ 4,729	[13],[15],[25]
Investment, Identifier [Axis]: Adams Publishing Group, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.00%	[11],[12],[17],[24]		11.00%	[11],[12],[17],[24]		10.00%	[13],[15],[25]
Spread		7.00%	[11],[12],[17],[24]		7.00%	[11],[12],[17],[24]		7.50%	[13],[15],[25]
PIK Rate	[11],[12],[17],[24]	1.00%			1.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15],[25]				$ 24,086
Ending balance	[11],[12],[17],[24]	$ 21,537			21,537
Fair value		$ 21,537	[11],[12],[17],[24]		$ 21,537	[11],[12],[17],[24]		$ 24,086	[13],[15],[25]
Investment, Identifier [Axis]: American Health Staffing Group, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.00%	[11],[12],[18]		6.00%	[11],[12],[18]		6.00%	[13],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15],[16]				$ (10)
Ending balance	[11],[12],[18]	$ (8)			(8)
Fair value		$ (8)	[11],[12],[18]		$ (8)	[11],[12],[18]		$ (10)	[13],[15],[16]
Investment, Identifier [Axis]: American Health Staffing Group, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.43%	[11],[12]		11.43%	[11],[12]		11.12%	[13],[15]
Spread		6.00%	[11],[12]		6.00%	[11],[12]		6.00%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 6,617
Ending balance	[11],[12]	$ 6,567			6,567
Fair value		$ 6,567	[11],[12]		$ 6,567	[11],[12]		$ 6,617	[13],[15]
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.15%	[11],[12],[17]		15.15%	[11],[12],[17]		10.46%	[13],[14],[15]
Spread		8.75%	[11],[12],[17]		8.75%	[11],[12],[17]		6.75%	[13],[14],[15]
PIK Rate		1.00%			1.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 14,606
Ending balance	[11],[12],[17]	$ 4,747			4,747
Fair value		$ 4,747	[11],[12],[17]		$ 4,747	[11],[12],[17]		$ 14,606	[13],[14],[15]
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.15%	[11],[12],[17]		15.15%	[11],[12],[17]		12.46%	[13],[14],[15]
Spread		8.75%	[11],[12],[17]		8.75%	[11],[12],[17]		8.75%	[13],[14],[15]
PIK Rate	[11],[12],[17]	1.00%			1.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 14,654
Ending balance	[11],[12],[17]	$ 7,712			7,712
Fair value		$ 7,712	[11],[12],[17]		$ 7,712	[11],[12],[17]		$ 14,654	[13],[14],[15]
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17],[21]	17.15%			17.15%
Spread	[11],[12],[17],[21]	10.75%			10.75%
PIK Rate	[11],[12],[17],[21]	1.00%			1.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17],[21]	$ 3,116			$ 3,116
Fair value	[11],[12],[17],[21]	$ 3,116			$ 3,116
Investment, Identifier [Axis]: American Nuts, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17],[21]	17.15%			17.15%
Spread	[11],[12],[17],[21]	10.75%			10.75%
PIK Rate	[11],[12],[17],[21]	1.00%			1.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17],[21]	$ 5,070			$ 5,070
Fair value	[11],[12],[17],[21]	$ 5,070			$ 5,070
Investment, Identifier [Axis]: American Teleconferencing Services, Ltd., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		7.50%	[8],[21],[26]		7.50%	[8],[21],[26]		7.50%	[7],[22]
Spread		6.50%	[8],[21],[26]		6.50%	[8],[21],[26]		6.50%	[7],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[22]				$ 168
Ending balance	[8],[21],[26]	$ 134			134
Fair value		$ 134	[8],[21],[26]		$ 134	[8],[21],[26]		$ 168	[7],[22]
Investment, Identifier [Axis]: American Teleconferencing Services, Ltd., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		7.50%	[8],[12],[21],[26]		7.50%	[8],[12],[21],[26]		7.50%	[7],[15],[22]
Spread		6.50%	[8],[12],[21],[26]		6.50%	[8],[12],[21],[26]		6.50%	[7],[15],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15],[22]				$ 808
Ending balance	[8],[12],[21],[26]	$ 647			647
Fair value		647	[8],[12],[21],[26]		647	[8],[12],[21],[26]		$ 808	[7],[15],[22]
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)					0		139
Amount of Interest, Fees or Dividends Credited to Income					171		1,302
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					14,914		32,597
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		0		0	0		0
Fair value		0		0	0		0	14,914		32,597
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)					0		0
Amount of Interest, Fees or Dividends Credited to Income					(171)		985
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					(14,914)		41,748
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		0		0	0		0
Fair value		$ 0		$ 0	$ 0		$ 0	$ (14,914)		41,748
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Total Rate		14.13%		12.63%	14.13%		12.63%	14.13%
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
Fair value		0		0	0		0	$ 0		0
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					1,076		(1,050)
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					3,504		4,894
Gross Additions					1,076		0
Gross Reductions					0		1,050
Ending balance		4,580		3,844	4,580		3,844
Fair value		$ 4,580		$ 3,844	$ 4,580		$ 3,844	$ 3,504		4,894
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[12],[17]	15.38%			15.38%
Spread		10.00%	[12],[17]	10.00%	10.00%	[12],[17]	10.00%	10.00%	[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					4		4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					(3)	[15],[16]	(4)
Gross Additions					162		1
Gross Reductions					0		0
Ending balance		$ 159	[12],[17]	$ (3)	159	[12],[17]	(3)
Fair value		$ 159	[12],[17]	$ (3)	$ 159	[12],[17]	$ (3)	$ (3)	[15],[16]	(4)
Investment, Identifier [Axis]: Analytical Systems Keco Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.38%	[12],[17]	12.63%	15.38%	[12],[17]	12.63%	14.13%	[15]
Spread		10.00%	[12],[17]	10.00%	10.00%	[12],[17]	10.00%	10.00%	[15]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					569		506
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,545	[15]	4,740
Gross Additions					61		65
Gross Reductions					469		210
Ending balance		$ 4,137	[12],[17]	$ 4,595	4,137	[12],[17]	4,595
Fair value		4,137	[12],[17]	4,595	4,137	[12],[17]	4,595	$ 4,545	[15]	4,740
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
Fair value		0	[10]	0	0	[10]	0	0	[9]	0
Investment, Identifier [Axis]: ArborWorks, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				0
Ending balance	[11]	0			0
Fair value		$ 0	[11]		$ 0	[11]		$ 0	[13]
Investment, Identifier [Axis]: ArborWorks, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.43%	[11],[12],[17],[21]		15.43%	[11],[12],[17],[21]		13.41%	[13],[15]
Spread		7.00%	[11],[12],[17],[21]		7.00%	[11],[12],[17],[21]		9.00%	[13],[15]
PIK Rate	[11],[12],[17],[21]	3.00%			3.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 3,945
Ending balance	[11],[12],[17],[21]	$ 3,899			3,899
Fair value		$ 3,899	[11],[12],[17],[21]		$ 3,899	[11],[12],[17],[21]		$ 3,945	[13],[15]
Investment, Identifier [Axis]: ArborWorks, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.43%	[11],[12],[17],[21]		15.43%	[11],[12],[17],[21]		13.56%	[13],[15]
Spread		7.00%	[11],[12],[17],[21]		7.00%	[11],[12],[17],[21]		9.00%	[13],[15]
PIK Rate	[11],[12],[17],[21]	3.00%			3.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 25,065
Ending balance	[11],[12],[17],[21]	$ 16,611			16,611
Fair value		16,611	[11],[12],[17],[21]		16,611	[11],[12],[17],[21]		$ 25,065	[13],[15]
Investment, Identifier [Axis]: Archer Systems, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				1,388
Ending balance	[11]	2,030			2,030
Fair value		$ 2,030	[11]		$ 2,030	[11]		$ 1,388	[13]
Investment, Identifier [Axis]: Archer Systems, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.00%	[11],[12],[17],[18]		6.00%	[11],[12],[17],[18]		6.50%	[13],[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15],[16]				$ (135)
Ending balance	[11],[12],[17],[18]	$ (114)			(114)
Fair value		$ (114)	[11],[12],[17],[18]		$ (114)	[11],[12],[17],[18]		$ (135)	[13],[14],[15],[16]
Investment, Identifier [Axis]: Archer Systems, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.54%	[11],[12],[17]		11.54%	[11],[12],[17]		10.92%	[13],[14],[15]
Spread		6.00%	[11],[12],[17]		6.00%	[11],[12],[17]		6.50%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 66,511
Ending balance	[11],[12],[17]	$ 45,375			45,375
Fair value		45,375	[11],[12],[17]		45,375	[11],[12],[17]		$ 66,511	[13],[14],[15]
Investment, Identifier [Axis]: Arrow International, Inc, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[13],[14],[15],[27]							10.36%
Spread	[13],[14],[15],[27]							6.60%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15],[27]				36,000
Fair value	[13],[14],[15],[27]							$ 36,000
Investment, Identifier [Axis]: BBB Tank Services, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0		0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		0		0	0		0
Fair value		$ 0		$ 0	$ 0		$ 0	$ 0		0
Investment, Identifier [Axis]: BBB Tank Services, LLC, Preferred Stock (non-voting)
Schedule of Investments [Line Items]
Total Rate		15.00%		15.00%	15.00%		15.00%	15.00%
PIK Rate		15.00%		15.00%	15.00%		15.00%
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
Fair value		$ 0		$ 0	$ 0		$ 0	$ 0		0
Investment, Identifier [Axis]: BBB Tank Services, LLC, Unsecured Debt 1
Schedule of Investments [Line Items]
Total Rate		16.44%	[12],[26]	13.56%	16.44%	[12],[26]	13.56%	15.12%	[15],[28]
Spread		11.00%	[12],[26]	11.00%	11.00%	[12],[26]	11.00%	11.00%	[15],[28]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					96		75
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					800	[15],[28]	800
Gross Additions					0		0
Gross Reductions					200		0
Ending balance		$ 600	[12],[26]	$ 800	600	[12],[26]	800
Fair value		$ 600	[12],[26]	$ 800	$ 600	[12],[26]	$ 800	$ 800	[15],[28]	800
Investment, Identifier [Axis]: BBB Tank Services, LLC, Unsecured Debt 2
Schedule of Investments [Line Items]
Total Rate		16.44%	[12],[26]	13.56%	16.44%	[12],[26]	13.56%	15.12%	[15],[28]
Spread		11.00%	[12],[26]	11.00%	11.00%	[12],[26]	11.00%	11.00%	[15],[28]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					116		(209)
Amount of Interest, Fees or Dividends Credited to Income					484		377
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,086	[15],[28]	1,707
Gross Additions					116		0
Gross Reductions					0		209
Ending balance		$ 2,202	[12],[26]	$ 1,498	2,202	[12],[26]	1,498
Fair value		2,202	[12],[26]	1,498	2,202	[12],[26]	1,498	$ 2,086	[15],[28]	1,707
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)					(280)		1,390
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					3,320	[13]	1,930
Gross Additions					0		1,390
Gross Reductions					280		0
Ending balance		3,040	[11]	3,320	3,040	[11]	3,320
Fair value		$ 3,040	[11]	$ 3,320	$ 3,040	[11]	$ 3,320	$ 3,320	[13]	1,930
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%	[13]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					45		38
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					711	[13]	710
Gross Additions					0		1
Gross Reductions					0		0
Ending balance		$ 711	[11]	$ 711	711	[11]	711
Fair value		711	[11]	711	711	[11]	711	$ 711	[13]	710
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)					2,055		0
Amount of Interest, Fees or Dividends Credited to Income					630		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,095	[19]	0
Gross Additions					2,055		4,095
Gross Reductions					0		0
Ending balance		6,150	[20]	4,095	6,150	[20]	4,095
Fair value		6,150	[20]	4,095	6,150	[20]	4,095	4,095	[19]	0
Investment, Identifier [Axis]: Batjer TopCo, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					6		0
Amount of Interest, Fees or Dividends Credited to Income					1		4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					(8)	[16]	0
Gross Additions					8		451
Gross Reductions					0		459
Ending balance		0	[18]	(8)	0	[18]	(8)
Fair value		$ 0	[18]	$ (8)	$ 0	[18]	$ (8)	(8)	[16]	0
Investment, Identifier [Axis]: Batjer TopCo, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.00%		11.00%	10.00%		11.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					11		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[16]	0
Gross Additions					630		0
Gross Reductions					0		0
Ending balance		$ 630		$ 0	630		0
Fair value		$ 630		$ 0	$ 630		$ 0	$ 0	[16]	0
Investment, Identifier [Axis]: Batjer TopCo, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.00%		11.00%	10.00%		11.00%	11.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					73		0
Amount of Interest, Fees or Dividends Credited to Income					859		824
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					10,933		0
Gross Additions					93		10,927
Gross Reductions					451		0
Ending balance		$ 10,575		$ 10,927	10,575		10,927
Fair value		10,575		10,927	10,575		10,927	$ 10,933		0
Investment, Identifier [Axis]: Berry Aviation, Inc., Preferred Member Units 1
Schedule of Investments [Line Items]
Total Rate	[13],[19],[29]							8.00%
PIK Rate	[13],[19],[29]							8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[19],[29]				4,561
Ending balance	[11],[20],[30]	2,820			2,820
Fair value		2,820	[11],[20],[30]		2,820	[11],[20],[30]		$ 4,561	[13],[19],[29]
Investment, Identifier [Axis]: Berry Aviation, Inc., Preferred Member Units 2
Schedule of Investments [Line Items]
PIK Rate	[13],[16],[19],[29]							16.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[16],[19],[29]				270
Ending balance	[11],[20],[30]	220			220
Fair value		$ 220	[11],[20],[30]		220	[11],[20],[30]		$ 270	[13],[16],[19],[29]
Investment, Identifier [Axis]: Berry Aviation, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate	[13]							12.00%
PIK Rate	[13]							1.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				$ 195
Fair value	[13]							$ 195
Investment, Identifier [Axis]: Bettercloud, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.25%	[11],[12],[17],[18]		7.25%	[11],[12],[17],[18]		1.00%	[13],[14],[15],[16]
PIK Rate	[13],[14],[15],[16]							6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15],[16]				$ (76)
Ending balance	[11],[12],[17],[18]	$ (65)			(65)
Fair value		$ (65)	[11],[12],[17],[18]		$ (65)	[11],[12],[17],[18]		$ (76)	[13],[14],[15],[16]
Investment, Identifier [Axis]: Bettercloud, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.67%	[11],[12],[17]		12.67%	[11],[12],[17]		11.40%	[13],[14],[15]
Spread		7.25%	[11],[12],[17]		7.25%	[11],[12],[17]		1.00%	[13],[14],[15]
PIK Rate		6.25%	[11],[12],[17]		6.25%	[11],[12],[17]		6.00%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 27,505
Ending balance	[11],[12],[17]	$ 27,737			27,737
Fair value		27,737	[11],[12],[17]		27,737	[11],[12],[17]		$ 27,505	[13],[14],[15]
Investment, Identifier [Axis]: Binswanger Enterprises, LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				420
Ending balance	[11]	20			20
Fair value		20	[11]		20	[11]		420	[13]
Investment, Identifier [Axis]: Bluestem Brands, Inc., Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[19]				4,860
Ending balance	[8]	1,140			1,140
Fair value		$ 1,140	[8]		$ 1,140	[8]		$ 4,860	[7],[19]
Investment, Identifier [Axis]: Bluestem Brands, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[8],[12]	16.00%			16.00%
Spread		7.50%	[8],[12]		7.50%	[8],[12]		8.50%	[7],[15],[16]
PIK Rate	[8],[12]	15.00%			15.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15],[16]				$ 0
Ending balance	[8],[12]	$ 2,311			2,311
Fair value		$ 2,311	[8],[12]		$ 2,311	[8],[12]		$ 0	[7],[15],[16]
Investment, Identifier [Axis]: Bluestem Brands, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.94%	[8],[12],[17]		13.94%	[8],[12],[17]		12.94%	[7],[15]
Spread		8.50%	[8],[12],[17]		8.50%	[8],[12],[17]		8.50%	[7],[15]
PIK Rate	[8],[12],[17]	12.94%			12.94%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]				$ 3,139
Ending balance	[8],[12],[17]	$ 3,344			3,344
Fair value		3,344	[8],[12],[17]		3,344	[8],[12],[17]		$ 3,139	[7],[15]
Investment, Identifier [Axis]: Bluestem Brands, Inc., Warrants
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[9]				1,095
Ending balance	[8],[10]	260			260
Fair value		260	[8],[10]		260	[8],[10]		1,095	[7],[9]
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)					(840)		(1,510)
Amount of Interest, Fees or Dividends Credited to Income					61		73
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,970	[19]	4,830
Gross Additions					0		0
Gross Reductions					840		1,510
Ending balance		2,130		3,320	2,130		3,320
Fair value		$ 2,130		$ 3,320	$ 2,130		$ 3,320	$ 2,970	[19]	4,830
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)					0		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					0		0
Ending balance		$ 320		$ 320	320		320
Fair value		$ 320		$ 320	$ 320		$ 320	$ 320		320
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Class B Preferred Member Units
Schedule of Investments [Line Items]
Total Rate		8.00%	[20]	8.00%	8.00%	[20]	8.00%	8.00%	[19]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(300)		3,840
Amount of Interest, Fees or Dividends Credited to Income					2,920		558
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					31,420	[19]	23,170
Gross Additions					0		3,840
Gross Reductions					300		0
Ending balance		$ 31,120	[20]	$ 27,010	31,120	[20]	27,010
Fair value		$ 31,120	[20]	$ 27,010	$ 31,120	[20]	$ 27,010	$ 31,420	[19]	23,170
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		14.52%	[12],[17],[31]		14.52%	[12],[17],[31]		13.39%	[14],[15],[32]
Spread		9.15%	[12],[17],[31]		9.15%	[12],[17],[31]		9.26%	[14],[15],[32]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[32]				$ 99,194
Ending balance	[12],[17],[31]	$ 97,216			97,216
Fair value		97,216	[12],[17],[31]		97,216	[12],[17],[31]		$ 99,194	[14],[15],[32]
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread				8.00%			8.00%
Amount of Realized Gain/(Loss)					0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					1		19
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
Fair value		$ 0		$ 0	$ 0		$ 0	0		0
Investment, Identifier [Axis]: Bolder Panther Group, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.52%		12.63%	14.52%		12.63%
Spread		9.15%		10.00%	9.15%		10.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(106)		266
Amount of Interest, Fees or Dividends Credited to Income					10,599		5,780
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					99,194		39,000
Gross Additions					106		60,194
Gross Reductions					2,084		0
Ending balance		$ 97,216		$ 99,194	97,216		99,194
Fair value		97,216		99,194	97,216		99,194	$ 99,194		39,000
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[33],[34]	571			571
Fair value	[11],[33],[34]	$ 571			$ 571
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Secured Debt 1
Schedule of Investments [Line Items]
Spread	[11],[12],[17],[18],[33],[34]	7.00%			7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17],[18],[33],[34]	$ (26)			$ (26)
Fair value	[11],[12],[17],[18],[33],[34]	$ (26)			$ (26)
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17],[33],[34]	11.40%			11.40%
Spread	[11],[12],[17],[33],[34]	6.00%			6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17],[33],[34]	$ 6,357			$ 6,357
Fair value	[11],[12],[17],[33],[34]	$ 6,357			$ 6,357
Investment, Identifier [Axis]: Bond Brand Loyalty ULC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17],[33],[34]	13.40%			13.40%
Spread	[11],[12],[17],[33],[34]	8.00%			8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17],[33],[34]	$ 6,356			$ 6,356
Fair value	[11],[12],[17],[33],[34]	$ 6,356			$ 6,356
Investment, Identifier [Axis]: Brainworks Software, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.50%	[11],[12],[21],[26]		12.50%	[11],[12],[21],[26]		12.50%	[13],[15],[22],[28]
Spread		9.25%	[11],[12],[21],[26]		9.25%	[11],[12],[21],[26]		9.25%	[13],[15],[22],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15],[22],[28]				$ 761
Ending balance	[11],[12],[21],[26]	$ 761			761
Fair value		$ 761	[11],[12],[21],[26]		$ 761	[11],[12],[21],[26]		$ 761	[13],[15],[22],[28]
Investment, Identifier [Axis]: Brainworks Software, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%	[11],[12],[21],[26]		12.50%	[11],[12],[21],[26]		12.50%	[13],[15],[22],[28]
Spread		9.25%	[11],[12],[21],[26]		9.25%	[11],[12],[21],[26]		9.25%	[13],[15],[22],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15],[22],[28]				$ 2,916
Ending balance	[11],[12],[21],[26]	$ 1,075			1,075
Fair value		1,075	[11],[12],[21],[26]		1,075	[11],[12],[21],[26]		$ 2,916	[13],[15],[22],[28]
Investment, Identifier [Axis]: Brewer Crane Holdings, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(1,460)		(2,040)
Amount of Interest, Fees or Dividends Credited to Income					90		795
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					7,080	[19]	7,710
Gross Additions					0		0
Gross Reductions					1,460		2,040
Ending balance		5,620	[20]	5,670	5,620	[20]	5,670
Fair value		$ 5,620	[20]	$ 5,670	$ 5,620	[20]	$ 5,670	$ 7,080	[19]	7,710
Investment, Identifier [Axis]: Brewer Crane Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		15.44%	[12]	12.56%	15.44%	[12]	12.56%	14.12%	[15]
Spread		10.00%	[12]	10.00%	10.00%	[12]	10.00%	10.00%	[15]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(117)		0
Amount of Interest, Fees or Dividends Credited to Income					682		649
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,964	[15]	8,037
Gross Additions					30		19
Gross Reductions					489		1,972
Ending balance		$ 5,505	[12]	$ 6,084	5,505	[12]	6,084
Fair value		5,505	[12]	6,084	5,505	[12]	6,084	$ 5,964	[15]	8,037
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					75		75
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,000	[19],[29]	1,000
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		1,000		1,000	1,000		1,000
Fair value		1,000		$ 1,000	1,000		$ 1,000	$ 1,000	[19],[29]	1,000
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Preferred Member Units 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[30]	1,000			1,000
Fair value	[20],[30]	$ 1,000			$ 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					869		869
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
Fair value		$ 8,813		$ 8,813	$ 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%	[30]	13.00%	13.00%	[30]	13.00%	13.00%	[29]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					99		99
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,000	[29]	1,000
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 1,000	[30]	$ 1,000	1,000	[30]	1,000
Fair value		1,000	[30]	1,000	1,000	[30]	1,000	$ 1,000	[29]	1,000
Investment, Identifier [Axis]: Bridge Capital Solutions Corporation, Warrants
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[9]				4,340
Ending balance	[10]	4,450			4,450
Fair value		4,450	[10]		4,450	[10]		4,340	[9]
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)					46		83
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,828		1,712
Gross Additions					46		83
Gross Reductions					0		0
Ending balance		1,874		1,795	1,874		1,795
Fair value		1,874		1,795	1,874		1,795	1,828		1,712
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)					64		117
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,512		2,348
Gross Additions					64		117
Gross Reductions					0		0
Ending balance		2,576		2,465	2,576		2,465
Fair value		2,576		$ 2,465	2,576		$ 2,465	2,512		2,348
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	[19],[35],[36],[37]				4,727
Ending balance	[33],[38],[39]	4,221			4,221
Fair value		4,221	[33],[38],[39]		4,221	[33],[38],[39]		4,727	[19],[35],[36],[37]
Investment, Identifier [Axis]: Brightwood Capital Fund Investments, LP Interests (Brightwood Capital Fund IV, LP)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19],[35],[36],[37]				4,541
Ending balance	[20],[33],[38],[39]	4,661			4,661
Fair value		4,661	[20],[33],[38],[39]		4,661	[20],[33],[38],[39]		4,541	[19],[35],[36],[37]
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	[35],[36],[37]				2,229
Ending balance	[20],[33],[38],[39]	2,391			2,391
Fair value		$ 2,391	[20],[33],[38],[39]		$ 2,391	[20],[33],[38],[39]		$ 2,229	[35],[36],[37]
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
Fair value		$ 0		$ 0	$ 0		$ 0	$ 0		0
Investment, Identifier [Axis]: Buca C, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%	[26]	9.00%	12.00%	[26]	9.00%	9.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					292		1,604
Amount of Interest, Fees or Dividends Credited to Income					1,659		1,488
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					12,337		14,370
Gross Additions					292		1,602
Gross Reductions					375		1,966
Ending balance		$ 12,254	[26]	$ 14,006	12,254	[26]	14,006
Fair value		$ 12,254	[26]	14,006	$ 12,254	[26]	14,006	$ 12,337		14,370
Investment, Identifier [Axis]: Burning Glass Intermediate Holding Company, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	10.42%			10.42%
Spread		5.00%	[11],[12],[17]		5.00%	[11],[12],[17]		5.00%	[13],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15],[16]				$ 0
Ending balance	[11],[12],[17]	$ 465			465
Fair value		$ 465	[11],[12],[17]		$ 465	[11],[12],[17]		$ 0	[13],[15],[16]
Investment, Identifier [Axis]: Burning Glass Intermediate Holding Company, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.42%	[11],[12],[17]		10.42%	[11],[12],[17]		8.91%	[13],[15]
Spread		5.00%	[11],[12],[17]		5.00%	[11],[12],[17]		5.00%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 19,933
Ending balance	[11],[12],[17]	$ 19,732			19,732
Fair value		19,732	[11],[12],[17]		19,732	[11],[12],[17]		$ 19,933	[13],[15]
Investment, Identifier [Axis]: CAI Software LLC, Preferred Equity 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19]				1,789
Ending balance		1,789			1,789
Fair value		1,789			1,789			1,789	[19]
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
Fair value		0			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)					1,838		(2,370)
Amount of Interest, Fees or Dividends Credited to Income					2,059		2,471
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					49,002	[19]	50,620
Gross Additions					1,838		0
Gross Reductions					0		2,370
Ending balance		50,840	[20]	48,250	50,840	[20]	48,250
Fair value		50,840	[20]	48,250	50,840	[20]	48,250	49,002	[19]	50,620
Investment, Identifier [Axis]: CMS Minerals Investments, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					99		0
Amount of Unrealized Gain/(Loss)					(366)		331
Amount of Interest, Fees or Dividends Credited to Income					44		150
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,670	[19],[29]	1,974
Gross Additions					99		331
Gross Reductions					1,769		415
Ending balance		0		1,890	0		1,890
Fair value		$ 0		1,890	0		1,890	$ 1,670	[19],[29]	1,974
Investment, Identifier [Axis]: Cadence Aerospace LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[13],[15],[40]							11.99%
Spread	[13],[15],[40]							8.50%
PIK Rate	[13],[15],[40]							0.01%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15],[40]				$ 28,328
Fair value	[13],[15],[40]							$ 28,328
Investment, Identifier [Axis]: Cadence Aerospace LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	12.07%			12.07%
Spread	[11],[12],[17]	6.50%			6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 5,003			$ 5,003
Fair value	[11],[12],[17]	$ 5,003			$ 5,003
Investment, Identifier [Axis]: Cadence Aerospace LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	12.07%			12.07%
Spread	[11],[12],[17]	6.50%			6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 1,557			$ 1,557
Fair value	[11],[12],[17]	$ 1,557			$ 1,557
Investment, Identifier [Axis]: Cadence Aerospace LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	12.07%			12.07%
Spread	[11],[12],[17]	6.50%			6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 2,048			$ 2,048
Fair value	[11],[12],[17]	$ 2,048			$ 2,048
Investment, Identifier [Axis]: Cadence Aerospace LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	12.07%			12.07%
Spread	[11],[12],[17]	6.50%			6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 587			$ 587
Fair value	[11],[12],[17]	$ 587			$ 587
Investment, Identifier [Axis]: Cadence Aerospace LLC, Secured Debt 5
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	12.07%			12.07%
Spread	[11],[12],[17]	6.50%			6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 61			$ 61
Fair value	[11],[12],[17]	61			61
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)					(180)		(200)
Amount of Interest, Fees or Dividends Credited to Income					149		178
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,210	[19]	2,570
Gross Additions					0		0
Gross Reductions					180		200
Ending balance		2,030	[20]	2,370	2,030	[20]	2,370
Fair value		2,030	[20]	2,370	2,030	[20]	2,370	2,210	[19]	2,570
Investment, Identifier [Axis]: California Splendor Holdings LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(4,550)		7,750
Amount of Interest, Fees or Dividends Credited to Income					188		188
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					25,495	[19]	13,275
Gross Additions					0		7,750
Gross Reductions					4,550		0
Ending balance		20,945	[20]	21,025	20,945	[20]	21,025
Fair value		$ 20,945	[20]	$ 21,025	$ 20,945	[20]	$ 21,025	$ 25,495	[19]	$ 13,275
Investment, Identifier [Axis]: California Splendor Holdings LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Total Rate		15.00%	[20]	15.00%	15.00%	[20]	15.00%	15.00%	[19]
PIK Rate		15.00%	[20]		15.00%	[20]		15.00%	[19]	15.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					454		792
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					3,994	[19]	9,510
Gross Additions					454		792
Gross Reductions					0		6,449
Ending balance		$ 4,448	[20]	$ 3,853	4,448	[20]	3,853
Fair value		$ 4,448	[20]	$ 3,853	$ 4,448	[20]	$ 3,853	$ 3,994	[19]	$ 9,510
Investment, Identifier [Axis]: California Splendor Holdings LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		15.50%	[12],[17]	12.38%	15.50%	[12],[17]	12.38%	13.75%	[15]
Spread		10.00%	[12],[17]	10.00%	10.00%	[12],[17]	10.00%	10.00%	[15]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(49)		52
Amount of Interest, Fees or Dividends Credited to Income					3,240		2,467
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					28,000	[15]	27,915
Gross Additions					10		85
Gross Reductions					49		0
Ending balance		$ 27,961	[12],[17]	$ 28,000	27,961	[12],[17]	28,000
Fair value		$ 27,961	[12],[17]	28,000	$ 27,961	[12],[17]	28,000	$ 28,000	[15]	27,915
Investment, Identifier [Axis]: Camin Cargo Control, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.93%	[8],[12],[17]		11.93%	[8],[12],[17]		10.88%	[7],[15]
Spread		6.50%	[8],[12],[17]		6.50%	[8],[12],[17]		6.50%	[7],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]				$ 14,685
Ending balance	[8],[12],[17]	$ 14,569			14,569
Fair value		14,569	[8],[12],[17]		14,569	[8],[12],[17]		$ 14,685	[7],[15]
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
Fair value		$ 4,500		$ 4,500	$ 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				8.63%			8.63%
Spread		6.00%	[12],[17],[18]	6.00%	6.00%	[12],[17],[18]	6.00%	6.00%	[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					18		5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					(9)	[15],[16]	0
Gross Additions					439		0
Gross Reductions					451		0
Ending balance		$ (21)	[12],[17],[18]	$ 0	(21)	[12],[17],[18]	0
Fair value		$ (21)	[12],[17],[18]	$ 0	$ (21)	[12],[17],[18]	$ 0	$ (9)	[15],[16]	0
Investment, Identifier [Axis]: Career Team Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%		12.50%	12.50%		12.50%	12.50%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					1,950		1,950
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					20,090		20,050
Gross Additions					31		30
Gross Reductions					90		0
Ending balance		$ 20,031		$ 20,080	20,031		20,080
Fair value		20,031		20,080	20,031		20,080	$ 20,090		20,050
Investment, Identifier [Axis]: CaseWorthy, Inc., Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				246
Ending balance	[11]	246			246
Fair value		$ 246	[11]		$ 246	[11]		$ 246	[13]
Investment, Identifier [Axis]: CaseWorthy, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.00%	[11],[12],[17],[18]		6.00%	[11],[12],[17],[18]		6.00%	[13],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15],[16]				$ (11)
Ending balance	[11],[12],[17],[18]	$ (9)			(9)
Fair value		$ (9)	[11],[12],[17],[18]		$ (9)	[11],[12],[17],[18]		$ (11)	[13],[15],[16]
Investment, Identifier [Axis]: CaseWorthy, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.65%	[11],[12],[17]		11.65%	[11],[12],[17]		10.73%	[13],[15]
Spread		6.00%	[11],[12],[17]		6.00%	[11],[12],[17]		6.00%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 7,914
Ending balance	[11],[12],[17]	$ 7,973			7,973
Fair value		$ 7,973	[11],[12],[17]		$ 7,973	[11],[12],[17]		$ 7,914	[13],[15]
Investment, Identifier [Axis]: CaseWorthy, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.65%	[11],[12],[17]		11.65%	[11],[12],[17]		10.48%	[13],[15]
Spread		6.00%	[11],[12],[17]		6.00%	[11],[12],[17]		5.75%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 6,133
Ending balance	[11],[12],[17]	$ 6,133			6,133
Fair value		6,133	[11],[12],[17]		6,133	[11],[12],[17]		$ 6,133	[13],[15]
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					1,700		2,038
Amount of Interest, Fees or Dividends Credited to Income					90		90
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					8,700		5,840
Gross Additions					1,700		2,320
Gross Reductions					0		0
Ending balance		10,400		8,160	10,400		8,160
Fair value		$ 10,400		$ 8,160	$ 10,400		$ 8,160	$ 8,700		5,840
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		9.00%	[12],[17],[18]	9.00%	9.00%	[12],[17],[18]	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					9		25
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[15],[16]	0
Gross Additions					0		1,440
Gross Reductions					0		1,440
Ending balance		$ 0	[12],[17],[18]	$ 0	0	[12],[17],[18]	0
Fair value		$ 0	[12],[17],[18]	$ 0	$ 0	[12],[17],[18]	$ 0	$ 0	[15],[16]	0
Investment, Identifier [Axis]: Centre Technologies Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.48%	[12],[17]	11.63%	14.48%	[12],[17]	11.63%	13.13%	[15]
Spread		9.00%	[12],[17]	9.00%	9.00%	[12],[17]	9.00%	9.00%	[15]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					70		507
Amount of Interest, Fees or Dividends Credited to Income					1,657		1,271
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					14,954	[15]	8,864
Gross Additions					2,620		6,470
Gross Reductions					0		387
Ending balance		$ 17,574	[12],[17]	$ 14,947	17,574	[12],[17]	14,947
Fair value		17,574	[12],[17]	14,947	17,574	[12],[17]	14,947	$ 14,954	[15]	8,864
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)					3,010		(1,810)
Amount of Interest, Fees or Dividends Credited to Income					2,792		1,335
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					22,920	[19]	24,140
Gross Additions					3,010		0
Gross Reductions					0		1,810
Ending balance		25,930	[20]	22,330	25,930	[20]	22,330
Fair value		25,930	[20]	22,330	25,930	[20]	22,330	22,920	[19]	24,140
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)					260		0
Amount of Interest, Fees or Dividends Credited to Income					69		55
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,710	[19],[29]	1,540
Gross Additions					260		451
Gross Reductions					0		0
Ending balance		2,970	[20],[30]	1,991	2,970	[20],[30]	1,991
Fair value		$ 2,970	[20],[30]	$ 1,991	$ 2,970	[20],[30]	$ 1,991	$ 2,710	[19],[29]	1,540
Investment, Identifier [Axis]: Chamberlin Holding LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				8.63%			8.63%
Spread		6.00%	[12],[17],[18]	6.00%	6.00%	[12],[17],[18]	6.00%	6.00%	[15],[16]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					140		0
Amount of Interest, Fees or Dividends Credited to Income					21		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],[17],[18]	$ 0	0	[12],[17],[18]	0
Fair value		$ 0	[12],[17],[18]	$ 0	$ 0	[12],[17],[18]	$ 0	$ 0	[15],[16]	0
Investment, Identifier [Axis]: Chamberlin Holding LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.49%	[12],[17]	10.63%	13.49%	[12],[17]	10.63%	12.13%	[15]
Spread		8.00%	[12],[17]	8.00%	8.00%	[12],[17]	8.00%	8.00%	[15]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(7)		(51)
Amount of Interest, Fees or Dividends Credited to Income					1,655		1,314
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					16,945	[15]	17,817
Gross Additions					7		51
Gross Reductions					545		402
Ending balance		$ 16,407	[12],[17]	$ 17,466	16,407	[12],[17]	17,466
Fair value		16,407	[12],[17]	17,466	16,407	[12],[17]	17,466	$ 16,945	[15]	17,817
Investment, Identifier [Axis]: Chandler Signs Holdings, LLC, Class A Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					1,797		0
Amount of Unrealized Gain/(Loss)					(290)		510
Amount of Interest, Fees or Dividends Credited to Income					60		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,790	[13]	460
Gross Additions					1,797		510
Gross Reductions					3,587		0
Ending balance		0		970	0		970
Fair value		$ 0		970	$ 0		970	$ 1,790	[13]	460
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.58%	[11],[12],[17],[41]		12.58%	[11],[12],[17],[41]		10.72%	[13],[14],[15],[42]
Spread		7.00%	[11],[12],[17],[41]		7.00%	[11],[12],[17],[41]		6.25%	[13],[14],[15],[42]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15],[42]				$ 1,841
Ending balance	[11],[12],[17],[41]	$ 3,007			3,007
Fair value		$ 3,007	[11],[12],[17],[41]		$ 3,007	[11],[12],[17],[41]		$ 1,841	[13],[14],[15],[42]
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.53%	[11],[12],[17]		12.53%	[11],[12],[17]		10.71%	[13],[14],[15],[43]
Spread		7.00%	[11],[12],[17]		7.00%	[11],[12],[17]		6.25%	[13],[14],[15],[43]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15],[43]				$ 38,484
Ending balance	[11],[12],[17]	$ 35,451			35,451
Fair value		$ 35,451	[11],[12],[17]		$ 35,451	[11],[12],[17]		$ 38,484	[13],[14],[15],[43]
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	12.53%			12.53%
Spread	[11],[12],[17]	7.00%			7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 1,964			$ 1,964
Fair value	[11],[12],[17]	$ 1,964			$ 1,964
Investment, Identifier [Axis]: Channel Partners Intermediateco, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	12.53%			12.53%
Spread	[11],[12],[17]	7.00%			7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 4,747			$ 4,747
Fair value	[11],[12],[17]	4,747			4,747
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)					670		(780)
Amount of Interest, Fees or Dividends Credited to Income					666		425
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					13,340	[19]	13,990
Gross Additions					670		0
Gross Reductions					0		780
Ending balance		14,010	[20]	13,210	14,010	[20]	13,210
Fair value		$ 14,010	[20]	$ 13,210	$ 14,010	[20]	$ 13,210	$ 13,340	[19]	13,990
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)					(26)		(36)
Amount of Interest, Fees or Dividends Credited to Income					452		461
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,694		5,694
Gross Additions					26		36
Gross Reductions					26		36
Ending balance		$ 5,694		$ 5,694	5,694		5,694
Fair value		5,694		5,694	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)					(2,640)		(760)
Amount of Interest, Fees or Dividends Credited to Income					275		595
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					8,220	[19]	10,250
Gross Additions					0		0
Gross Reductions					2,640		760
Ending balance		5,580	[20]	9,490	5,580	[20]	9,490
Fair value		5,580	[20]	9,490	5,580	[20]	9,490	8,220	[19]	10,250
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)					220		80
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					610	[29]	530
Gross Additions					519		80
Gross Reductions					0		0
Ending balance		1,129	[30]	610	1,129	[30]	610
Fair value		1,129	[30]	$ 610	1,129	[30]	$ 610	$ 610	[29]	530
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				12.13%			12.13%
Spread				9.50%			9.50%	9.00%	[14],[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					2		898
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[14],[15],[16]	10,401
Gross Additions					0		29
Gross Reductions					0		0
Ending balance		0	[18]	$ 10,430	0	[18]	10,430
Fair value		$ 0	[18]	$ 10,430	$ 0	[18]	$ 10,430	$ 0	[14],[15],[16]	10,401
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.50%		10.00%	11.50%		10.00%	13.23%	[14],[15]
Spread	[14],[15]							9.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(138)		0
Amount of Interest, Fees or Dividends Credited to Income					910		81
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					10,440	[14],[15]	1,071
Gross Additions					29		0
Gross Reductions					1,817		24
Ending balance		$ 8,652		$ 1,047	8,652		1,047
Fair value		$ 8,652		1,047	$ 8,652		1,047	$ 10,440	[14],[15]	1,071
Investment, Identifier [Axis]: Clad-Rex Steel, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.00%			10.00%			10.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					78
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,039
Gross Additions					1
Gross Reductions					27
Ending balance		$ 1,013			1,013
Fair value		$ 1,013			$ 1,013			$ 1,039
Investment, Identifier [Axis]: Clarius BIGS, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		15.00%	[11],[21],[26]		15.00%	[11],[21],[26]		15.00%	[13],[22],[28]
PIK Rate		15.00%	[11],[21],[26]		15.00%	[11],[21],[26]		15.00%	[13],[22],[28]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[22],[28]				$ 19
Ending balance	[11],[21],[26]	$ 19			19
Fair value		19	[11],[21],[26]		19	[11],[21],[26]		$ 19	[13],[22],[28]
Investment, Identifier [Axis]: Classic H&G Holdings, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(8,639)		8,530
Amount of Interest, Fees or Dividends Credited to Income					5,259		1,294
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					24,637	[19]	15,260
Gross Additions					0		8,530
Gross Reductions					8,637		0
Ending balance		16,000	[20]	23,790	16,000	[20]	23,790
Fair value		$ 16,000	[20]	$ 23,790	$ 16,000	[20]	$ 23,790	$ 24,637	[19]	15,260
Investment, Identifier [Axis]: Classic H&G Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.50%	[12],[17]	8.38%	11.50%	[12],[17]	8.38%	9.75%	[15]
Spread		6.00%	[12],[17]	6.00%	6.00%	[12],[17]	6.00%	6.00%	[15]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					397		455
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,560	[15]	4,000
Gross Additions					0		11,720
Gross Reductions					0		7,960
Ending balance		$ 4,560	[12],[17]	$ 7,760	4,560	[12],[17]	7,760
Fair value		$ 4,560	[12],[17]	$ 7,760	$ 4,560	[12],[17]	$ 7,760	$ 4,560	[15]	4,000
Investment, Identifier [Axis]: Classic H&G Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		8.00%		8.00%	8.00%		8.00%	8.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(32)		(32)
Amount of Interest, Fees or Dividends Credited to Income					1,201		1,201
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					19,274		19,274
Gross Additions					32		32
Gross Reductions					32		32
Ending balance		$ 19,274		$ 19,274	19,274		19,274
Fair value		19,274		19,274	19,274		19,274	$ 19,274		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)					10,970		9,570
Amount of Interest, Fees or Dividends Credited to Income					2,610		3,710
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					58,180	[19],[29]	47,640
Gross Additions					10,970		9,570
Gross Reductions					0		0
Ending balance		69,150	[20],[30]	57,210	69,150	[20],[30]	57,210
Fair value		69,150	[20],[30]	$ 57,210	69,150	[20],[30]	$ 57,210	$ 58,180	[19],[29]	47,640
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[15]							15.38%
Spread				10.50%			10.50%	10.50%	[15]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							84
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,462	[15]	(13)
Gross Additions							2,866
Gross Reductions							2,864
Ending balance		0	[18]	$ (11)	0	[18]	(11)
Fair value		0	[18]	$ (11)	0	[18]	$ (11)	$ 1,462	[15]	(13)
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 1.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					11
Amount of Interest, Fees or Dividends Credited to Income					8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance		0			0
Fair value		$ 0			$ 0			$ 0
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%		13.63%	12.50%		13.63%	15.38%	[15]
Spread				10.50%			10.50%	10.50%	[15]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(66)
Amount of Interest, Fees or Dividends Credited to Income							4,044
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 40,801	[15]	42,497
Gross Additions							66
Gross Reductions							1,338
Ending balance		$ 43,556		$ 41,225	43,556		41,225
Fair value		$ 43,556		41,225	$ 43,556		41,225	$ 40,801	[15]	42,497
Investment, Identifier [Axis]: Cody Pools, Inc., Secured Debt 2.1
Schedule of Investments [Line Items]
Total Rate		12.50%			12.50%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					35
Amount of Interest, Fees or Dividends Credited to Income					2,029
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					46,311
Gross Reductions					2,755
Ending balance		$ 43,556			43,556
Fair value		$ 43,556			$ 43,556			0
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
Fair value		$ 0			$ 0			1,462
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
Fair value		0			0			40,801
Investment, Identifier [Axis]: Colonial Electric Company LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							80
Amount of Interest, Fees or Dividends Credited to Income							1,287
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					9,160	[19]	9,130
Gross Additions							80
Gross Reductions							0
Ending balance				9,210			9,210
Fair value				9,210			9,210	9,160	[19]	9,130
Investment, Identifier [Axis]: Colonial Electric Company LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					1,440
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					2,400
Gross Reductions					0
Ending balance		2,400			2,400
Fair value		2,400			2,400			0
Investment, Identifier [Axis]: Colonial Electric Company LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(1,480)
Amount of Interest, Fees or Dividends Credited to Income					(1,179)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					9,160
Gross Additions					0
Gross Reductions					1,480
Ending balance		7,680			7,680
Fair value		7,680			7,680			9,160
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					50		46
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[16]	0
Gross Additions					1,600		1,600
Gross Reductions					1,600		1,600
Ending balance		0	[18]	0	0	[18]	0
Fair value		$ 0	[18]	$ 0	$ 0	[18]	$ 0	$ 0	[16]	0
Investment, Identifier [Axis]: Colonial Electric Company LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%	12.00%		12.00%	12.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(500)		0
Amount of Interest, Fees or Dividends Credited to Income					2,105		2,224
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					23,151		24,351
Gross Additions					42		45
Gross Reductions					1,446		945
Ending balance		$ 21,747		$ 23,451	21,747		23,451
Fair value		21,747		23,451	21,747		23,451	$ 23,151		24,351
Investment, Identifier [Axis]: CompareNetworks Topco, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(4,400)		6,570
Amount of Interest, Fees or Dividends Credited to Income					316		474
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					19,830	[19]	12,000
Gross Additions					0		6,570
Gross Reductions					4,400		0
Ending balance		15,430	[20]	18,570	15,430	[20]	18,570
Fair value		$ 15,430	[20]	$ 18,570	$ 15,430	[20]	$ 18,570	$ 19,830	[19]	12,000
Investment, Identifier [Axis]: CompareNetworks Topco, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[12],[17]	14.48%			14.48%
Spread	[12],[17]	9.00%			9.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[12],[17]	$ 3,869			$ 3,869
Fair value	[12],[17]	$ 3,869			$ 3,869
Investment, Identifier [Axis]: CompareNetworks Topco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		9.00%		9.00%	9.00%		9.00%	9.00%	[15],[16],[28]
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	[15],[16],[28]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0		$ 0	0		0
Fair value		$ 0		$ 0	$ 0		$ 0	$ 0	[15],[16],[28]	0
Investment, Identifier [Axis]: CompareNetworks Topco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.48%		11.63%	14.48%		11.63%	13.13%	[15]
Spread		9.00%		9.00%	9.00%		9.00%	9.00%	[15]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(7)		(13)
Amount of Interest, Fees or Dividends Credited to Income					533		468
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,241	[15]	6,477
Gross Additions					7		13
Gross Reductions					1,379		1,140
Ending balance		$ 3,869		$ 5,350	3,869		5,350
Fair value		$ 3,869		5,350	$ 3,869		5,350	$ 5,241	[15]	6,477
Investment, Identifier [Axis]: Computer Data Source, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.61%	[11],[12],[17],[44]		13.61%	[11],[12],[17],[44]		12.56%	[13],[15],[45]
Spread		8.00%	[11],[12],[17],[44]		8.00%	[11],[12],[17],[44]		8.00%	[13],[15],[45]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15],[45]				$ 4,621
Ending balance	[11],[12],[17],[44]	$ 4,804			4,804
Fair value		$ 4,804	[11],[12],[17],[44]		$ 4,804	[11],[12],[17],[44]		$ 4,621	[13],[15],[45]
Investment, Identifier [Axis]: Computer Data Source, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.52%	[11],[12],[17]		13.52%	[11],[12],[17]		12.56%	[13],[15]
Spread		8.00%	[11],[12],[17]		8.00%	[11],[12],[17]		8.00%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 17,178
Ending balance	[11],[12],[17]	$ 17,660			17,660
Fair value		17,660	[11],[12],[17]		17,660	[11],[12],[17]		$ 17,178	[13],[15]
Investment, Identifier [Axis]: Congruent Credit Opportunities Funds, LP Interests (Congruent Credit Opportunities Fund III, LP)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19],[35],[36],[37]				7,657
Ending balance	[20],[33],[38],[39]	4,426			4,426
Fair value		4,426	[20],[33],[38],[39]		4,426	[20],[33],[38],[39]		7,657	[19],[35],[36],[37]
Investment, Identifier [Axis]: Congruent Credit Opportunities Funds, LP Interests (Congruent Credit Opportunities Fund III, LP)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					87		(63)
Amount of Interest, Fees or Dividends Credited to Income					345		427
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					7,657		9,959
Gross Additions					87		0
Gross Reductions					3,318		2,105
Ending balance		4,426		7,854	4,426		7,854
Fair value		4,426		7,854	4,426		7,854	7,657		9,959
Investment, Identifier [Axis]: Construction Supply Investments, LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[19]				21,165
Ending balance	[11]	23,135			23,135
Fair value		23,135	[11]		23,135	[11]		21,165	[13],[19]
Investment, Identifier [Axis]: Copper Trail Fund Investments, LP Interests (CTMH, LP)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					38		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					588	[35],[36],[37]	710
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		588	[20],[33],[38],[39]	710	588	[20],[33],[38],[39]	710
Fair value		588	[20],[33],[38],[39]	710	588	[20],[33],[38],[39]	710	588	[35],[36],[37]	710
Investment, Identifier [Axis]: Cybermedia Technologies, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					15,000
Gross Reductions					0
Ending balance		15,000			15,000
Fair value		15,000			15,000			0
Investment, Identifier [Axis]: Cybermedia Technologies, 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					4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance	[18]	0			0
Fair value		$ 0	[18]		$ 0	[18]		0
Investment, Identifier [Axis]: Cybermedia Technologies, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%			13.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					2,020
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					28,734
Gross Reductions					0
Ending balance		$ 28,734			28,734
Fair value		28,734			28,734			0
Investment, Identifier [Axis]: DMA Industries, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		1,316
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					7,260		5,944
Gross Additions					0		1,316
Gross Reductions					0		0
Ending balance		7,260		7,260	7,260		7,260
Fair value		$ 7,260		$ 7,260	$ 7,260		$ 7,260	$ 7,260		5,944
Investment, Identifier [Axis]: DMA Industries, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%	12.00%		12.00%	12.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(32)		175
Amount of Interest, Fees or Dividends Credited to Income					1,896		1,961
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					21,200		20,993
Gross Additions					32		207
Gross Reductions					1,232		0
Ending balance		$ 20,000		$ 21,200	20,000		21,200
Fair value		$ 20,000		21,200	$ 20,000		21,200	$ 21,200		20,993
Investment, Identifier [Axis]: DTE Enterprises, LLC, Class A Preferred Member Units
Schedule of Investments [Line Items]
Total Rate		8.00%	[11]		8.00%	[11]		8.00%	[13]
PIK Rate		8.00%	[11]		8.00%	[11]		8.00%	[13]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				$ 380
Ending balance	[11]	$ 260			260
Fair value		$ 260	[11]		$ 260	[11]		$ 380	[13]
Investment, Identifier [Axis]: DTE Enterprises, LLC, Class AA Preferred Member Units (non-voting)
Schedule of Investments [Line Items]
Total Rate		10.00%	[11],[20]		10.00%	[11],[20]		10.00%	[13],[19]
PIK Rate		10.00%	[11],[20]		10.00%	[11],[20]		10.00%	[13],[19]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[19]				$ 1,161
Ending balance	[11],[20]	$ 1,252			1,252
Fair value		1,252	[11],[20]		1,252	[11],[20]		$ 1,161	[13],[19]
Investment, Identifier [Axis]: DTE Enterprises, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread	[13],[15],[16]							7.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15],[16]				(1)
Fair value	[13],[15],[16]							$ (1)
Investment, Identifier [Axis]: DTE Enterprises, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[13],[15]							12.24%
Spread	[13],[15]							7.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				5,934
Fair value	[13],[15]							$ 5,934
Investment, Identifier [Axis]: Dalton US Inc., Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				201
Ending balance	[11]	201			201
Fair value		$ 201	[11]		$ 201	[11]		$ 201	[13]
Investment, Identifier [Axis]: Dalton US Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.92%	[11],[12],[17],[46]		13.92%	[11],[12],[17],[46]		11.90%	[13],[14],[15]
Spread		8.50%	[11],[12],[17],[46]		8.50%	[11],[12],[17],[46]		8.00%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 1,077
Ending balance	[11],[12],[17],[46]	$ 803			803
Fair value		$ 803	[11],[12],[17],[46]		$ 803	[11],[12],[17],[46]		$ 1,077	[13],[14],[15]
Investment, Identifier [Axis]: Dalton US Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	14.18%			14.18%
Spread		8.50%	[11],[12],[17]		8.50%	[11],[12],[17]		8.00%	[13],[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15],[16]				$ (74)
Ending balance	[11],[12],[17]	$ 4,015			4,015
Fair value		$ 4,015	[11],[12],[17]		$ 4,015	[11],[12],[17]		$ (74)	[13],[14],[15],[16]
Investment, Identifier [Axis]: Dalton US Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		13.92%	[11],[12],[17]		13.92%	[11],[12],[17]		12.56%	[13],[14],[15]
Spread		8.50%	[11],[12],[17]		8.50%	[11],[12],[17]		8.00%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 14,186
Ending balance	[11],[12],[17]	$ 14,245			14,245
Fair value		14,245	[11],[12],[17]		14,245	[11],[12],[17]		$ 14,186	[13],[14],[15]
Investment, Identifier [Axis]: Datacom, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(2,430)		60
Amount of Interest, Fees or Dividends Credited to Income					0		72
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,670	[19]	2,610
Gross Additions					0		60
Gross Reductions					2,430		0
Ending balance		240	[20]	2,670	240	[20]	2,670
Fair value		$ 240	[20]	$ 2,670	$ 240	[20]	$ 2,670	$ 2,670	[19]	2,610
Investment, Identifier [Axis]: Datacom, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		7.50%		7.50%	7.50%		7.50%	7.50%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					30		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					223		0
Gross Additions					808		223
Gross Reductions					495		0
Ending balance		$ 536		$ 223	536		223
Fair value		$ 536		$ 223	$ 536		$ 223	$ 223		0
Investment, Identifier [Axis]: Datacom, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.00%		7.50%	10.00%		7.50%	7.50%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(85)		160
Amount of Interest, Fees or Dividends Credited to Income					761		624
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					7,789		7,668
Gross Additions					116		284
Gross Reductions					288		203
Ending balance		$ 7,617		$ 7,749	7,617		7,749
Fair value		7,617		7,749	7,617		7,749	$ 7,789		7,668
Investment, Identifier [Axis]: Digital Products Holdings LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					150		150
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					9,835	[19]	9,835
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		9,835	[20]	9,835	9,835	[20]	9,835
Fair value		$ 9,835	[20]	$ 9,835	$ 9,835	[20]	$ 9,835	$ 9,835	[19]	9,835
Investment, Identifier [Axis]: Digital Products Holdings LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		15.38%	[12],[17]	12.63%	15.38%	[12],[17]	12.63%	14.13%	[15]
Spread		10.00%	[12],[17]	10.00%	10.00%	[12],[17]	10.00%	10.00%	[15]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(67)		0
Amount of Interest, Fees or Dividends Credited to Income					1,735		1,436
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					15,523	[15]	16,801
Gross Additions					0		33
Gross Reductions					845		990
Ending balance		$ 14,678	[12],[17]	$ 15,844	14,678	[12],[17]	15,844
Fair value		14,678	[12],[17]	15,844	14,678	[12],[17]	15,844	$ 15,523	[15]	16,801
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc., Preferred Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(850)		3,870
Amount of Interest, Fees or Dividends Credited to Income					171		1,029
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					22,220	[19]	18,350
Gross Additions					0		3,870
Gross Reductions					850		0
Ending balance		21,370	[20]	22,220	21,370	[20]	22,220
Fair value		$ 21,370	[20]	$ 22,220	$ 21,370	[20]	$ 22,220	$ 22,220	[19]	18,350
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		14.00%		13.63%	14.00%		13.63%
Spread				11.00%			11.00%	11.00%	[15],[16]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(22)		14
Amount of Interest, Fees or Dividends Credited to Income					36		102
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[15],[16]	(22)
Gross Additions					1,297		4,272
Gross Reductions					22		850
Ending balance		$ 1,275		$ 3,400	1,275		3,400
Fair value		$ 1,275		$ 3,400	$ 1,275		$ 3,400	$ 0	[15],[16]	(22)
Investment, Identifier [Axis]: Direct Marketing Solutions, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.00%		13.63%	14.00%		13.63%	15.13%	[15]
Spread				11.00%			11.00%	11.00%	[15]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(47)		(53)
Amount of Interest, Fees or Dividends Credited to Income					2,778		2,322
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					27,267	[15]	24,070
Gross Additions					47		53
Gross Reductions					1,361		1,073
Ending balance		$ 25,953		$ 23,050	25,953		23,050
Fair value		25,953		23,050	25,953		23,050	$ 27,267	[15]	24,070
Investment, Identifier [Axis]: Dos Rios Partners, LP Interests (Dos Rios Partners - A, LP)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					241		0
Amount of Unrealized Gain/(Loss)					(173)		(1,147)
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,898	[35],[36],[37]	10,329
Gross Additions					241		0
Gross Reductions					460		1,147
Ending balance		2,679	[33],[38],[39]	9,182	2,679	[33],[38],[39]	9,182
Fair value		2,679	[33],[38],[39]	9,182	2,679	[33],[38],[39]	9,182	2,898	[35],[36],[37]	10,329
Investment, Identifier [Axis]: Dos Rios Partners, LP Interests (Dos Rios Partners, LP)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					754		0
Amount of Unrealized Gain/(Loss)					(388)		(364)
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					9,127	[35],[36],[37]	3,280
Gross Additions					759		0
Gross Reductions					1,292		364
Ending balance		8,594	[33],[38],[39]	2,916	8,594	[33],[38],[39]	2,916
Fair value		8,594	[33],[38],[39]	2,916	8,594	[33],[38],[39]	2,916	9,127	[35],[36],[37]	3,280
Investment, Identifier [Axis]: Dos Rios Stone Products LLC, Class A Preferred Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					250		(290)
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,330	[13],[29]	640
Gross Additions					250		0
Gross Reductions					0		290
Ending balance		1,580	[11],[30]	350	1,580	[11],[30]	350
Fair value		$ 1,580	[11],[30]	350	$ 1,580	[11],[30]	350	1,330	[13],[29]	640
Investment, Identifier [Axis]: Dreyfus Government Cash Management
Schedule of Investments [Line Items]
Total Rate		4.96%			4.96%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[47]	$ 36,507			$ 36,507
Fair value	[47]	36,507			36,507
Investment, Identifier [Axis]: Dynamic Communities, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				0
Ending balance	[11]	0			0
Fair value		0	[11]		0	[11]		0	[13]
Investment, Identifier [Axis]: Dynamic Communities, LLC, Preferred Equity 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				128
Ending balance	[11]	128			128
Fair value		128	[11]		128	[11]		128	[13]
Investment, Identifier [Axis]: Dynamic Communities, LLC, Preferred Equity 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				0
Ending balance	[11]	0			0
Fair value		$ 0	[11]		$ 0	[11]		$ 0	[13]
Investment, Identifier [Axis]: Dynamic Communities, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		9.91%	[11],[12],[17]		9.91%	[11],[12],[17]		9.18%	[13],[14],[15]
Spread		4.50%	[11],[12],[17]		4.50%	[11],[12],[17]		4.50%	[13],[14],[15]
PIK Rate		9.91%	[11],[12],[17]		9.91%	[11],[12],[17]		9.18%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 1,717
Ending balance	[11],[12],[17]	$ 1,847			1,847
Fair value		$ 1,847	[11],[12],[17]		$ 1,847	[11],[12],[17]		$ 1,717	[13],[14],[15]
Investment, Identifier [Axis]: Dynamic Communities, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.91%	[11],[12],[17]		11.91%	[11],[12],[17]		11.18%	[13],[14],[15]
Spread		6.50%	[11],[12],[17]		6.50%	[11],[12],[17]		6.50%	[13],[14],[15]
PIK Rate		11.91%	[11],[12],[17]		11.91%	[11],[12],[17]		11.18%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 1,642
Ending balance	[11],[12],[17]	$ 1,562			1,562
Fair value		1,562	[11],[12],[17]		1,562	[11],[12],[17]		$ 1,642	[13],[14],[15]
Investment, Identifier [Axis]: EIG Fund Investments, LP Interests (EIG Global Private Debt Fund-A, L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					16		11
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					68		46
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,013	[19],[35],[36],[37]	547
Gross Additions					16		1,093
Gross Reductions					56		170
Ending balance		973	[20],[33],[38],[39]	1,470	973	[20],[33],[38],[39]	1,470
Fair value		$ 973	[20],[33],[38],[39]	1,470	973	[20],[33],[38],[39]	1,470	$ 1,013	[19],[35],[36],[37]	547
Investment, Identifier [Axis]: EPIC Y-Grade Services, LP, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[7],[15]							10.70%
Spread	[7],[15]							6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]				$ 6,141
Fair value	[7],[15]							$ 6,141
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.54%	[11],[12],[17]		13.54%	[11],[12],[17]		11.73%	[13],[15]
Spread		8.00%	[11],[12],[17]		8.00%	[11],[12],[17]		7.00%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 3,276
Ending balance	[11],[12],[17]	$ 917			917
Fair value		$ 917	[11],[12],[17]		$ 917	[11],[12],[17]		$ 3,276	[13],[15]
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.54%	[11],[12],[17]		13.54%	[11],[12],[17]		11.73%	[13],[15]
Spread		8.00%	[11],[12],[17]		8.00%	[11],[12],[17]		7.00%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 4,916
Ending balance	[11],[12],[17]	$ 4,545			4,545
Fair value		$ 4,545	[11],[12],[17]		$ 4,545	[11],[12],[17]		$ 4,916	[13],[15]
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		13.54%	[11],[12],[17]		13.54%	[11],[12],[17]		11.73%	[13],[15]
Spread		8.00%	[11],[12],[17]		8.00%	[11],[12],[17]		7.00%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 22,967
Ending balance	[11],[12],[17]	$ 9,067			9,067
Fair value		$ 9,067	[11],[12],[17]		$ 9,067	[11],[12],[17]		$ 22,967	[13],[15]
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	13.54%			13.54%
Spread	[11],[12],[17]	8.00%			8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 1,880			$ 1,880
Fair value	[11],[12],[17]	$ 1,880			$ 1,880
Investment, Identifier [Axis]: Eastern Wholesale Fence LLC, Secured Debt 5
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	13.54%			13.54%
Spread	[11],[12],[17]	8.00%			8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 10,289			$ 10,289
Fair value	[11],[12],[17]	10,289			10,289
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Common Stock 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					364
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					7,603
Gross Additions					364
Gross Reductions					1,877
Ending balance		6,090			6,090
Fair value		6,090			6,090			7,603
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Common Stock 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					112
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[29]				1,558
Gross Additions					112
Gross Reductions					0
Ending balance	[30]	1,670			1,670
Fair value		$ 1,670	[30]		$ 1,670	[30]		$ 1,558	[29]
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.00%	[12],[17],[18]		6.00%	[12],[17],[18]		6.00%	[14],[15],[16]
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[14],[15],[16]				(9)
Gross Additions					1
Gross Reductions					0
Ending balance	[12],[17],[18]	$ (8)			(8)
Fair value		$ (8)	[12],[17],[18]		$ (8)	[12],[17],[18]		$ (9)	[14],[15],[16]
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%			12.00%			12.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					1,736
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					18,594
Gross Additions					29
Gross Reductions					0
Ending balance		$ 18,623			18,623
Fair value		$ 18,623			$ 18,623			$ 18,594
Investment, Identifier [Axis]: Elgin AcquireCo, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		9.00%			9.00%			9.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					430
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					6,294
Gross Additions					2
Gross Reductions					33
Ending balance		$ 6,263			6,263
Fair value		$ 6,263			$ 6,263			$ 6,294
Investment, Identifier [Axis]: Emerald Technologies Acquisition Co, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.82%	[8],[12],[17]		11.82%	[8],[12],[17]		10.67%	[7],[14],[15]
Spread		6.25%	[8],[12],[17]		6.25%	[8],[12],[17]		6.25%	[7],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[14],[15]				$ 8,787
Ending balance	[8],[12],[17]	$ 8,663			8,663
Fair value		8,663	[8],[12],[17]		8,663	[8],[12],[17]		$ 8,787	[7],[14],[15]
Investment, Identifier [Axis]: EnCap Energy Fund Investments, LP Interests (EnCap Energy Capital Fund IX, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19],[35],[36],[37]				2,019
Ending balance	[20],[33],[38],[39]	1,514			1,514
Fair value		1,514	[20],[33],[38],[39]		1,514	[20],[33],[38],[39]		2,019	[19],[35],[36],[37]
Investment, Identifier [Axis]: EnCap Energy Fund Investments, LP Interests (EnCap Energy Capital Fund VIII Co-Investors, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19],[35],[36],[37]				1,037
Ending balance	[20],[33],[38],[39]	950			950
Fair value		950	[20],[33],[38],[39]		950	[20],[33],[38],[39]		1,037	[19],[35],[36],[37]
Investment, Identifier [Axis]: EnCap Energy Fund Investments, LP Interests (EnCap Energy Capital Fund VIII, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19],[35],[36],[37]				2,092
Ending balance	[20],[33],[38],[39]	1,917			1,917
Fair value		1,917	[20],[33],[38],[39]		1,917	[20],[33],[38],[39]		2,092	[19],[35],[36],[37]
Investment, Identifier [Axis]: EnCap Energy Fund Investments, LP Interests (EnCap Energy Capital Fund X, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19],[35],[36],[37]				9,351
Ending balance	[20],[33],[38],[39]	5,609			5,609
Fair value		5,609	[20],[33],[38],[39]		5,609	[20],[33],[38],[39]		9,351	[19],[35],[36],[37]
Investment, Identifier [Axis]: EnCap Energy Fund Investments, LP Interests (EnCap Flatrock Midstream Fund II, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[35],[36],[37]				1,688
Ending balance	[20],[33],[38],[39]	1,413			1,413
Fair value		1,413	[20],[33],[38],[39]		1,413	[20],[33],[38],[39]		1,688	[35],[36],[37]
Investment, Identifier [Axis]: EnCap Energy Fund Investments, LP Interests (EnCap Flatrock Midstream Fund III, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19],[35],[36],[37]				5,718
Ending balance	[20],[33],[38],[39]	4,458			4,458
Fair value		$ 4,458	[20],[33],[38],[39]		$ 4,458	[20],[33],[38],[39]		$ 5,718	[19],[35],[36],[37]
Investment, Identifier [Axis]: Engineering Research & Consulting, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[13],[14],[15]							11.68%
Spread		5.50%	[11],[12],[18]		5.50%	[11],[12],[18]		6.50%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 131
Ending balance	[11],[12],[18]	$ 0			0
Fair value		$ 0	[11],[12],[18]		$ 0	[11],[12],[18]		$ 131	[13],[14],[15]
Investment, Identifier [Axis]: Engineering Research & Consulting, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.98%	[11],[12],[17]		11.98%	[11],[12],[17]		10.92%	[13],[14],[15]
Spread		6.50%	[11],[12],[17]		6.50%	[11],[12],[17]		6.50%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 16,338
Ending balance	[11],[12],[17]	$ 16,175			16,175
Fair value		16,175	[11],[12],[17]		16,175	[11],[12],[17]		$ 16,338	[13],[14],[15]
Investment, Identifier [Axis]: Escalent, Inc., Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11]	663			663
Fair value	[11]	$ 663			$ 663
Investment, Identifier [Axis]: Escalent, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread	[11],[15],[17],[18]	8.00%			8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[15],[17],[18]	$ (36)			$ (36)
Fair value	[11],[15],[17],[18]	$ (36)			$ (36)
Investment, Identifier [Axis]: Escalent, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[11],[15],[17]	13.49%			13.49%
Spread	[11],[15],[17]	8.00%			8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[15],[17]	$ 26,168			$ 26,168
Fair value	[11],[15],[17]	$ 26,168			$ 26,168
Investment, Identifier [Axis]: Event Holdco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.65%	[11],[12],[17],[30]		12.65%	[11],[12],[17],[30]		10.67%	[13],[15],[29]
Spread		7.00%	[11],[12],[17],[30]		7.00%	[11],[12],[17],[30]		7.00%	[13],[15],[29]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15],[29]				$ 3,507
Ending balance	[11],[12],[17],[30]	$ 3,692			3,692
Fair value		$ 3,692	[11],[12],[17],[30]		$ 3,692	[11],[12],[17],[30]		$ 3,507	[13],[15],[29]
Investment, Identifier [Axis]: Event Holdco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.65%	[11],[12],[17],[30]		12.65%	[11],[12],[17],[30]		10.67%	[13],[15],[29]
Spread		7.00%	[11],[12],[17],[30]		7.00%	[11],[12],[17],[30]		7.00%	[13],[15],[29]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15],[29]				$ 42,083
Ending balance	[11],[12],[17],[30]	$ 44,308			44,308
Fair value		$ 44,308	[11],[12],[17],[30]		$ 44,308	[11],[12],[17],[30]		$ 42,083	[13],[15],[29]
Investment, Identifier [Axis]: Fidelity Government Fund
Schedule of Investments [Line Items]
Total Rate		4.99%			4.99%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[48]	$ 826			$ 826
Fair value	[48]	$ 826			$ 826
Investment, Identifier [Axis]: Fidelity Treasury
Schedule of Investments [Line Items]
Total Rate		4.98%			4.98%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[49]	$ 71			$ 71
Fair value	[49]	71			71
Investment, Identifier [Axis]: Flame King Holdings, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					10,320		3,440
Amount of Interest, Fees or Dividends Credited to Income					2,478		909
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					17,580	[19]	10,400
Gross Additions					10,320		3,440
Gross Reductions					0		0
Ending balance		27,900	[20]	13,840	27,900	[20]	13,840
Fair value		$ 27,900	[20]	$ 13,840	$ 27,900	[20]	$ 13,840	$ 17,580	[19]	10,400
Investment, Identifier [Axis]: Flame King Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				9.25%			9.25%	10.75%	[15]
Spread		6.50%		6.50%	6.50%		6.50%	6.50%	[15]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(60)		64
Amount of Interest, Fees or Dividends Credited to Income					484		464
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					7,600	[15]	6,324
Gross Additions					60		1,276
Gross Reductions					7,660		0
Ending balance		$ 0		$ 7,600	0		7,600
Fair value		$ 0		$ 7,600	$ 0		$ 7,600	$ 7,600	[15]	6,324
Investment, Identifier [Axis]: Flame King Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				13.75%			13.75%	13.25%	[15]
Spread		9.00%		11.00%	9.00%		11.00%	9.00%	[15]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(162)		173
Amount of Interest, Fees or Dividends Credited to Income					1,583		2,035
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					21,200	[15]	20,996
Gross Additions					162		204
Gross Reductions					21,362		0
Ending balance		$ 0		$ 21,200	0		21,200
Fair value		$ 0		21,200	$ 0		21,200	$ 21,200	[15]	20,996
Investment, Identifier [Axis]: Flip Electronics LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.90%	[11],[17]		12.90%	[11],[17]		11.21%	[13],[14],[15]
Spread		7.50%	[11],[17]		7.50%	[11],[17]		7.50%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 736
Ending balance	[11],[17]	$ 982			982
Fair value		$ 982	[11],[17]		$ 982	[11],[17]		$ 736	[13],[14],[15]
Investment, Identifier [Axis]: Flip Electronics LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.01%	[11],[17]		13.01%	[11],[17]		12.19%	[13],[14],[15]
Spread		7.50%	[11],[17]		7.50%	[11],[17]		7.50%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 11,095
Ending balance	[11],[17]	$ 6,185			6,185
Fair value		$ 6,185	[11],[17]		$ 6,185	[11],[17]		$ 11,095	[13],[14],[15]
Investment, Identifier [Axis]: Flip Electronics LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[17]	12.98%			12.98%
Spread	[11],[17]	7.50%			7.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[17]	$ 4,909			$ 4,909
Fair value	[11],[17]	4,909			4,909
Investment, Identifier [Axis]: Freeport Financial Funds, LP Interests (Freeport Financial SBIC Fund LP)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[35],[36],[37]				3,483
Ending balance	[33],[38],[39]	3,497			3,497
Fair value		3,497	[33],[38],[39]		3,497	[33],[38],[39]		3,483	[35],[36],[37]
Investment, Identifier [Axis]: Freeport Financial Funds, LP Interests (Freeport First Lien Loan Fund III LP)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19],[35],[36],[37]				5,848
Ending balance	[20],[33],[38],[39]	4,873			4,873
Fair value		4,873	[20],[33],[38],[39]		4,873	[20],[33],[38],[39]		5,848	[19],[35],[36],[37]
Investment, Identifier [Axis]: Freeport Financial SBIC Fund LP, LP Interests (Freeport Financial SBIC Fund LP)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					14		(52)
Amount of Interest, Fees or Dividends Credited to Income					0		2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					3,483		6,078
Gross Additions					14		0
Gross Reductions					0		1,962
Ending balance		3,497		4,116	3,497		4,116
Fair value		3,497		4,116	3,497		4,116	3,483		6,078
Investment, Identifier [Axis]: Freeport Financial SBIC Fund LP, LP Interests (Freeport First Lien Loan Fund III LP)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		(57)
Amount of Interest, Fees or Dividends Credited to Income					446		309
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,848		7,231
Gross Additions					0		0
Gross Reductions					975		1,056
Ending balance		4,873		6,175	4,873		6,175
Fair value		4,873		6,175	4,873		6,175	5,848		7,231
Investment, Identifier [Axis]: Fuse, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7]				0
Ending balance	[8]	0			0
Fair value		$ 0	[8]		$ 0	[8]		$ 0	[7]
Investment, Identifier [Axis]: Fuse, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%	[8]		12.00%	[8]		12.00%	[7]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7]				$ 1,512
Ending balance	[8]	$ 1,374			1,374
Fair value		1,374	[8]		1,374	[8]		$ 1,512	[7]
Investment, Identifier [Axis]: GFG Group, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					3,240		150
Amount of Interest, Fees or Dividends Credited to Income					328		417
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					7,140		6,990
Gross Additions					3,240		150
Gross Reductions					0		0
Ending balance		10,380	[20]	7,140	10,380	[20]	7,140
Fair value		$ 10,380	[20]	$ 7,140	$ 10,380	[20]	$ 7,140	7,140		6,990
Investment, Identifier [Axis]: GFG Group, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		8.00%		9.00%	8.00%		9.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(22)		(25)
Amount of Interest, Fees or Dividends Credited to Income					763		969
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					11,345		12,545
Gross Additions					22		25
Gross Reductions					822		825
Ending balance		$ 10,545		$ 11,745	10,545		11,745
Fair value		10,545		11,745	10,545		11,745	11,345		12,545
Investment, Identifier [Axis]: GFG Group, LLC., Preferred Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19]				7,140
Fair value	[19]							$ 7,140
Investment, Identifier [Axis]: GFG Group, LLC., Secured Debt
Schedule of Investments [Line Items]
Total Rate								9.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					11,345
Fair value								$ 11,345
Investment, Identifier [Axis]: GRT Rubber Technologies LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					126		2,483
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					44,440	[19]	46,190
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		44,440		46,190	44,440		46,190
Fair value		$ 44,440		$ 46,190	$ 44,440		$ 46,190	$ 44,440	[19]	46,190
Investment, Identifier [Axis]: GRT Rubber Technologies LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate				10.56%			10.56%
Spread				8.00%			8.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(21)
Amount of Interest, Fees or Dividends Credited to Income							2,756
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							38,885
Gross Additions							1,629
Gross Reductions							21
Ending balance				$ 40,493			40,493
Fair value				40,493			40,493			38,885
Investment, Identifier [Axis]: GRT Rubber Technologies LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.48%	[17]		11.48%	[17]		10.12%
Spread		6.00%	[17]		6.00%	[17]		6.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					5
Amount of Interest, Fees or Dividends Credited to Income					113
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					670
Gross Additions					1,032
Gross Reductions					0
Ending balance	[17]	$ 1,702			1,702
Fair value		$ 1,702	[17]		$ 1,702	[17]		$ 670
Investment, Identifier [Axis]: GRT Rubber Technologies LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.48%	[17]		13.48%	[17]		12.12%
Spread		8.00%	[17]		8.00%	[17]		8.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					(35)
Amount of Interest, Fees or Dividends Credited to Income					4,022
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					40,493
Gross Additions					35
Gross Reductions					35
Ending balance	[17]	$ 40,493			40,493
Fair value		$ 40,493	[17]		$ 40,493	[17]		$ 40,493
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.92%	[11],[12],[17],[50]		11.92%	[11],[12],[17],[50]		11.20%	[13],[15]
Spread		6.50%	[11],[12],[17],[50]		6.50%	[11],[12],[17],[50]		6.50%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 2,171
Ending balance	[11],[12],[17],[50]	$ 1,955			1,955
Fair value		$ 1,955	[11],[12],[17],[50]		$ 1,955	[11],[12],[17],[50]		$ 2,171	[13],[15]
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.92%	[11],[12],[17],[18]		11.92%	[11],[12],[17],[18]		11.24%	[13],[15]
Spread		6.50%	[11],[12],[17],[18]		6.50%	[11],[12],[17],[18]		6.50%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 10,705
Ending balance	[11],[12],[17],[18]	$ (11)			(11)
Fair value		$ (11)	[11],[12],[17],[18]		$ (11)	[11],[12],[17],[18]		$ 10,705	[13],[15]
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	11.92%			11.92%
Spread	[11],[12],[17]	6.50%			6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 10,651			$ 10,651
Fair value	[11],[12],[17]	$ 10,651			$ 10,651
Investment, Identifier [Axis]: GS HVAM Intermediate, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	11.93%			11.93%
Spread	[11],[12],[17]	6.50%			6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 955			$ 955
Fair value	[11],[12],[17]	$ 955			$ 955
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[13],[14],[15]							10.42%
Spread		5.75%	[11],[12],[17],[18]		5.75%	[11],[12],[17],[18]		6.00%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 252
Ending balance	[11],[12],[17],[18]	$ 0			0
Fair value		$ 0	[11],[12],[17],[18]		$ 0	[11],[12],[17],[18]		$ 252	[13],[14],[15]
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	11.38%			11.38%
Spread		5.75%	[11],[12],[17]		5.75%	[11],[12],[17]		6.00%	[13],[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15],[16]				$ (15)
Ending balance	[11],[12],[17]	$ 301			301
Fair value		$ 301	[11],[12],[17]		$ 301	[11],[12],[17]		$ (15)	[13],[14],[15],[16]
Investment, Identifier [Axis]: GULF PACIFIC ACQUISITION, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.29%	[11],[12],[17]		11.29%	[11],[12],[17]		10.73%	[13],[14],[15]
Spread		5.75%	[11],[12],[17]		5.75%	[11],[12],[17]		6.00%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 3,661
Ending balance	[11],[12],[17]	$ 3,624			3,624
Fair value		3,624	[11],[12],[17]		3,624	[11],[12],[17]		$ 3,661	[13],[14],[15]
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					30,720		(3,230)
Amount of Interest, Fees or Dividends Credited to Income					4,963		715
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					50,890	[19]	49,700
Gross Additions					30,720		0
Gross Reductions					0		3,230
Ending balance		81,610	[20]	46,470	81,610	[20]	46,470
Fair value		$ 81,610	[20]	$ 46,470	$ 81,610	[20]	$ 46,470	$ 50,890	[19]	49,700
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				10.63%			10.63%
Spread		7.50%	[12],[17],[18],[24]	8.00%	7.50%	[12],[17],[18],[24]	8.00%	8.50%	[14],[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					5		5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[14],[15],[16]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 0	[12],[17],[18],[24]	$ 0	0	[12],[17],[18],[24]	0
Fair value		$ 0	[12],[17],[18],[24]	$ 0	$ 0	[12],[17],[18],[24]	$ 0	$ 0	[14],[15],[16]	0
Investment, Identifier [Axis]: Gamber-Johnson Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.50%	[12],[17],[24]	10.63%	10.50%	[12],[17],[24]	10.63%	11.50%	[14],[15]
Spread		7.50%	[12],[17],[24]	8.00%	7.50%	[12],[17],[24]	8.00%	8.50%	[14],[15]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(99)		(4)
Amount of Interest, Fees or Dividends Credited to Income					5,185		1,722
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					64,078	[14],[15]	21,598
Gross Additions					99		2,484
Gross Reductions					7,699		4
Ending balance		$ 56,478	[12],[17],[24]	$ 24,078	56,478	[12],[17],[24]	24,078
Fair value		56,478	[12],[17],[24]	24,078	56,478	[12],[17],[24]	24,078	$ 64,078	[14],[15]	21,598
Investment, Identifier [Axis]: Garreco, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(220)		(280)
Amount of Interest, Fees or Dividends Credited to Income					25		321
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,800	[19]	2,270
Gross Additions					0		0
Gross Reductions					220		280
Ending balance		1,580		1,990	1,580		1,990
Fair value		$ 1,580		$ 1,990	$ 1,580		$ 1,990	$ 1,800	[19]	2,270
Investment, Identifier [Axis]: Garreco, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%	[12],[17],[51]	9.50%	12.00%	[12],[17],[51]	9.50%	9.50%	[15],[52]
Spread		10.00%	[12],[17],[51]	8.00%	10.00%	[12],[17],[51]	8.00%	8.00%	[15],[52]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					315		290
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					3,826	[15],[52]	4,196
Gross Additions					0		0
Gross Reductions					738		370
Ending balance		$ 3,088	[12],[17],[51]	$ 3,826	3,088	[12],[17],[51]	3,826
Fair value		$ 3,088	[12],[17],[51]	3,826	$ 3,088	[12],[17],[51]	3,826	$ 3,826	[15],[52]	4,196
Investment, Identifier [Axis]: GeoStabilization International (GSI), Secured Debt
Schedule of Investments [Line Items]
Total Rate		10.80%	[8],[17]		10.80%	[8],[17]		9.44%	[7],[14]
Spread		5.25%	[8],[17]		5.25%	[8],[17]		5.25%	[7],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[14]				$ 19,472
Ending balance	[8],[17]	$ 19,981			19,981
Fair value		19,981	[8],[17]		19,981	[8],[17]		$ 19,472	[7],[14]
Investment, Identifier [Axis]: Gulf Manufacturing, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					1,980		170
Amount of Interest, Fees or Dividends Credited to Income					2,533		1,365
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					6,790	[19]	5,640
Gross Additions					1,980		170
Gross Reductions					0		0
Ending balance		8,770	[20]	5,810	8,770	[20]	5,810
Fair value		8,770	[20]	5,810	8,770	[20]	5,810	6,790	[19]	5,640
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance		0			0
Fair value		0			0			0
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							0
Gross Additions							0
Gross Reductions							0
Ending balance				0			0
Fair value				0			0			0
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							(1,680)
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							5,600
Gross Reductions							1,680
Ending balance				3,920			3,920
Fair value				$ 3,920			$ 3,920			0
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(980)
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					3,780
Gross Additions					0
Gross Reductions					980
Ending balance		2,800			2,800
Fair value		$ 2,800			$ 2,800			$ 3,780
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		9.50%	[12],[17],[18]	9.50%	9.50%	[12],[17],[18]	9.50%	9.50%	[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					0		7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[15],[16]	257
Gross Additions					0		0
Gross Reductions					0		257
Ending balance		$ 0	[12],[17],[18]	$ 0	0	[12],[17],[18]	0
Fair value		$ 0	[12],[17],[18]	0	$ 0	[12],[17],[18]	0	$ 0	[15],[16]	257
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%			12.50%			12.50%
Amount of Realized Gain/(Loss)					$ 0		(5,822)
Amount of Unrealized Gain/(Loss)					0		3,848
Amount of Interest, Fees or Dividends Credited to Income					227		503
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,284		9,717
Gross Additions					0		0
Gross Reductions					0		9,717
Ending balance		$ 2,284		0	2,284		0
Fair value		$ 2,284		$ 0	$ 2,284		$ 0	$ 2,284		9,717
Investment, Identifier [Axis]: Gulf Publishing Holdings, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate				12.50%			12.50%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(116)
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							0
Gross Additions							2,400
Gross Reductions							116
Ending balance				$ 2,284			2,284
Fair value				2,284			2,284			0
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		14.34%	[11],[12],[17]		14.34%	[11],[12],[17]		14.34%	[13],[14],[15]
Spread		9.50%	[11],[12],[17]		9.50%	[11],[12],[17]		9.50%	[13],[14],[15]
PIK Rate		14.34%	[11],[12],[17]		14.34%	[11],[12],[17]		2.00%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 311
Ending balance	[11],[12],[17]	$ 328			328
Fair value		$ 328	[11],[12],[17]		$ 328	[11],[12],[17]		$ 311	[13],[14],[15]
Investment, Identifier [Axis]: HDC/HW Intermediate Holdings, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.34%	[11],[12],[17]		14.34%	[11],[12],[17]		14.34%	[13],[14],[15]
Spread		9.50%	[11],[12],[17]		9.50%	[11],[12],[17]		9.50%	[13],[14],[15]
PIK Rate		14.34%	[11],[12],[17]		14.34%	[11],[12],[17]		2.00%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 3,186
Ending balance	[11],[12],[17]	$ 3,321			3,321
Fair value		$ 3,321	[11],[12],[17]		$ 3,321	[11],[12],[17]		$ 3,186	[13],[14],[15]
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.50%	[11],[12],[17],[18]		6.50%	[11],[12],[17],[18]		6.50%	[13],[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15],[16]				$ (62)
Ending balance	[11],[12],[17],[18]	$ (52)			(52)
Fair value		$ (52)	[11],[12],[17],[18]		$ (52)	[11],[12],[17],[18]		$ (62)	[13],[14],[15],[16]
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 2
Schedule of Investments [Line Items]
Spread		6.50%	[11],[12],[17],[18]		6.50%	[11],[12],[17],[18]		6.50%	[13],[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15],[16]				$ (62)
Ending balance	[11],[12],[17],[18]	$ (52)			(52)
Fair value		$ (52)	[11],[12],[17],[18]		$ (52)	[11],[12],[17],[18]		$ (62)	[13],[14],[15],[16]
Investment, Identifier [Axis]: HEADLANDS OP-CO LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.82%	[11],[12],[17]		11.82%	[11],[12],[17]		10.62%	[13],[14],[15]
Spread		6.50%	[11],[12],[17]		6.50%	[11],[12],[17]		6.50%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 16,791
Ending balance	[11],[12],[17]	$ 16,664			16,664
Fair value		$ 16,664	[11],[12],[17]		$ 16,664	[11],[12],[17]		$ 16,791	[13],[14],[15]
Investment, Identifier [Axis]: HOWLCO LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.42%	[8],[12],[17],[33],[34]		11.42%	[8],[12],[17],[33],[34]		10.69%	[7],[15],[36],[53]
Spread		6.00%	[8],[12],[17],[33],[34]		6.00%	[8],[12],[17],[33],[34]		6.00%	[7],[15],[36],[53]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15],[36],[53]				$ 24,381
Ending balance	[8],[12],[17],[33],[34]	$ 24,397			24,397
Fair value		24,397	[8],[12],[17],[33],[34]		24,397	[8],[12],[17],[33],[34]		$ 24,381	[7],[15],[36],[53]
Investment, Identifier [Axis]: HPEP 3, L.P., LP Interests (423 COR, L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					117
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,400
Gross Additions					0
Gross Reductions					0
Ending balance		1,400			1,400
Fair value		1,400			1,400			1,400
Investment, Identifier [Axis]: HPEP 3, L.P., LP Interests (423 COR, LP)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							0
Gross Additions							1,400
Gross Reductions							0
Ending balance				1,400			1,400
Fair value				1,400			1,400			0
Investment, Identifier [Axis]: HPEP 3, L.P., LP Interests (HPEP 3, L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		779
Amount of Unrealized Gain/(Loss)					283		254
Amount of Interest, Fees or Dividends Credited to Income					0		(80)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,331		4,712
Gross Additions					283		1,033
Gross Reductions					508		1,414
Ending balance		4,106		4,331	4,106		4,331
Fair value		4,106		4,331	4,106		4,331	4,331		4,712
Investment, Identifier [Axis]: HPEP 3, L.P., LP Interests (HPEP 4, L.P.)
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,332		0
Gross Additions					464		1,896
Gross Reductions					0		0
Ending balance		2,796		1,896	2,796		1,896
Fair value		2,796		1,896	2,796		1,896	2,332		0
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (2717 HPP-MS, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[35],[36],[37]				248
Ending balance	[33],[38],[39]	315			315
Fair value		315	[33],[38],[39]		315	[33],[38],[39]		248	[35],[36],[37]
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (2717 MH, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[35],[36],[37]				7,552
Ending balance	[20],[33],[38],[39]	5,896			5,896
Fair value		5,896	[20],[33],[38],[39]		5,896	[20],[33],[38],[39]		7,552	[35],[36],[37]
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (423 COR, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20],[33],[38],[39]	1,400			1,400
Fair value	[20],[33],[38],[39]	1,400			1,400
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (423 COR, LP)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[35],[36],[37]				1,400
Fair value	[35],[36],[37]							1,400
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (423 HAR, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[33],[38],[39]	750			750
Fair value	[33],[38],[39]	750			750
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (HPEP 3, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[35],[36],[37]				4,331
Ending balance	[20],[33],[38],[39]	4,106			4,106
Fair value		4,106	[20],[33],[38],[39]		4,106	[20],[33],[38],[39]		4,331	[35],[36],[37]
Investment, Identifier [Axis]: Harris Preston Fund Investments, LP Interests (HPEP 4, L.P.)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[35],[36],[37]				2,332
Ending balance	[33],[38],[39]	2,796			2,796
Fair value		2,796	[33],[38],[39]		2,796	[33],[38],[39]		2,332	[35],[36],[37]
Investment, Identifier [Axis]: Harrison Hydra-Gen, Ltd., Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					990		(250)
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					3,280		3,530
Gross Additions					990		0
Gross Reductions					0		250
Ending balance		4,270		3,280	4,270		3,280
Fair value		4,270		3,280	4,270		3,280	3,280		3,530
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		4,400
Amount of Interest, Fees or Dividends Credited to Income					196		803
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					17,460	[19]	14,680
Gross Additions					0		4,400
Gross Reductions					0		0
Ending balance		17,460	[20]	19,080	17,460	[20]	19,080
Fair value		17,460	[20]	19,080	17,460	[20]	19,080	17,460	[19]	14,680
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		230
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					920	[29]	770
Gross Additions					0		230
Gross Reductions					0		0
Ending balance		920	[30]	1,000	920	[30]	1,000
Fair value		$ 920	[30]	$ 1,000	$ 920	[30]	$ 1,000	$ 920	[29]	770
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.65%	[12],[17]	8.38%	11.65%	[12],[17]	8.38%	10.13%	[15]
Spread		6.00%	[12],[17]	6.00%	6.00%	[12],[17]	6.00%	6.00%	[15]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(1)		0
Amount of Interest, Fees or Dividends Credited to Income					234		150
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					3,185	[15]	2,585
Gross Additions					4,581		597
Gross Reductions					5,967		0
Ending balance		$ 1,799	[12],[17]	$ 3,182	1,799	[12],[17]	3,182
Fair value		$ 1,799	[12],[17]	$ 3,182	$ 1,799	[12],[17]	$ 3,182	$ 3,185	[15]	2,585
Investment, Identifier [Axis]: Hawk Ridge Systems, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%		8.00%	12.50%		8.00%	9.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					10		(4)
Amount of Interest, Fees or Dividends Credited to Income					3,636		2,145
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					37,800		34,800
Gross Additions					7,456		3,004
Gross Reductions					0		4
Ending balance		$ 45,256		$ 37,800	45,256		37,800
Fair value		45,256		37,800	45,256		37,800	$ 37,800		34,800
Investment, Identifier [Axis]: Heartland Dental, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[13],[15]							10.88%
Spread	[13],[15]							6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				13,599
Fair value	[13],[15]							$ 13,599
Investment, Identifier [Axis]: Houston Plating and Coatings, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					1,240		(990)
Amount of Interest, Fees or Dividends Credited to Income					51		17
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,400		3,210
Gross Additions					1,240		0
Gross Reductions					0		990
Ending balance		3,640	[20]	2,220	3,640	[20]	2,220
Fair value		$ 3,640	[20]	$ 2,220	$ 3,640	[20]	$ 2,220	$ 2,400		3,210
Investment, Identifier [Axis]: Houston Plating and Coatings, LLC, Unsecured Convertible Debt
Schedule of Investments [Line Items]
Total Rate		8.00%		8.00%	8.00%		8.00%	8.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(120)		(210)
Amount of Interest, Fees or Dividends Credited to Income					182		182
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					3,000		2,960
Gross Additions					0		0
Gross Reductions					120		210
Ending balance		$ 2,880		$ 2,750	2,880		2,750
Fair value		$ 2,880		$ 2,750	$ 2,880		$ 2,750	$ 3,000		2,960
Investment, Identifier [Axis]: Hybrid Promotions, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		15.76%	[11],[12],[17]		15.76%	[11],[12],[17]		12.07%	[13],[14]
Spread		8.25%	[11],[12],[17]		8.25%	[11],[12],[17]		8.25%	[13],[14]
PIK Rate	[11],[12],[17]	2.00%			2.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14]				$ 6,144
Ending balance	[11],[12],[17]	$ 5,893			5,893
Fair value		$ 5,893	[11],[12],[17]		$ 5,893	[11],[12],[17]		$ 6,144	[13],[14]
Investment, Identifier [Axis]: I-45 SLF LLC, Member Units (Fully diluted 20.0%; 21.75% profits interest)
Schedule of Investments [Line Items]
Diluted, percentage				20.00%			20.00%
Profits, percentage				21.75%			21.75%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(1,880)
Amount of Interest, Fees or Dividends Credited to Income							1,499
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							14,387
Gross Additions							0
Gross Reductions							1,880
Ending balance				$ 12,507			12,507
Fair value				12,507			12,507			14,387
Investment, Identifier [Axis]: I-45 SLF LLC, Member Units (Fully diluted 20.0%; 21.75% profits interest)
Schedule of Investments [Line Items]
Diluted, percentage		20.00%	[33],[38]		20.00%	[33],[38]		20.00%	[35],[36]
Profits, percentage		21.75%	[33],[38]		21.75%	[33],[38]		21.75%	[35],[36]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19],[35],[36]				$ 11,758
Ending balance	[20],[33],[38]	$ 13,217			13,217
Fair value		$ 13,217	[20],[33],[38]		$ 13,217	[20],[33],[38]		$ 11,758	[19],[35],[36]
Investment, Identifier [Axis]: I-45 SLF LLC, Member Units (Fully diluted 20.0%; 21.75% profits interest)
Schedule of Investments [Line Items]
Diluted, percentage		20.00%			20.00%
Profits, percentage		21.75%			21.75%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					259
Amount of Interest, Fees or Dividends Credited to Income					1,725
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					11,758
Gross Additions					1,459
Gross Reductions					0
Ending balance		$ 13,217			13,217
Fair value		13,217			13,217			11,758
Investment, Identifier [Axis]: IG Investor, LLC, Common Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					15,096
Gross Reductions					696
Ending balance		14,400			14,400
Fair value		14,400			14,400			0
Investment, Identifier [Axis]: IG Investor, 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					91
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					763
Gross Reductions					800
Ending balance	[18]	(37)			(37)
Fair value		$ (37)	[18]		$ (37)	[18]		0
Investment, Identifier [Axis]: IG Investor, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.00%			13.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					2,168
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					37,352
Gross Reductions					0
Ending balance		$ 37,352			37,352
Fair value		$ 37,352			$ 37,352			$ 0
Investment, Identifier [Axis]: IG Parent Corporation, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[7],[14],[15],[54]							10.17%
Spread		5.75%	[8],[12],[17],[18]		5.75%	[8],[12],[17],[18]		5.75%	[7],[14],[15],[54]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[14],[15],[54]				$ 698
Ending balance	[8],[12],[17],[18]	$ 0			0
Fair value		$ 0	[8],[12],[17],[18]		$ 0	[8],[12],[17],[18]		$ 698	[7],[14],[15],[54]
Investment, Identifier [Axis]: IG Parent Corporation, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.17%	[8],[12],[17]		11.17%	[8],[12],[17]		10.17%	[7],[14],[15]
Spread		5.75%	[8],[12],[17]		5.75%	[8],[12],[17]		5.75%	[7],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[14],[15]				$ 14,499
Ending balance	[8],[12],[17]	$ 9,423			9,423
Fair value		$ 9,423	[8],[12],[17]		$ 9,423	[8],[12],[17]		$ 14,499	[7],[14],[15]
Investment, Identifier [Axis]: IG Parent Corporation, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[8],[12],[17]	11.17%			11.17%
Spread	[8],[12],[17]	5.75%			5.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[8],[12],[17]	$ 4,966			$ 4,966
Fair value	[8],[12],[17]	$ 4,966			$ 4,966
Investment, Identifier [Axis]: INW Manufacturing, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.40%	[8],[12],[17]		11.40%	[8],[12],[17]		10.48%	[7],[15]
Spread		5.75%	[8],[12],[17]		5.75%	[8],[12],[17]		5.75%	[7],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]				$ 6,092
Ending balance	[8],[12],[17]	$ 5,310			5,310
Fair value		$ 5,310	[8],[12],[17]		$ 5,310	[8],[12],[17]		$ 6,092	[7],[15]
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread	[17],[18]	9.00%			9.00%
PIK Rate	[17],[18]	2.00%			2.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					16
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					11
Ending balance	[17],[18]	$ (11)			(11)
Fair value		$ (11)	[17],[18]		$ (11)	[17],[18]		0
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Spread	[17],[18]	9.00%			9.00%
PIK Rate	[17],[18]	2.00%			2.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					9
Ending balance	[17],[18]	$ (9)			(9)
Fair value		$ (9)	[17],[18]		$ (9)	[17],[18]		0
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[17]	15.40%			15.40%
Spread	[17]	8.00%			8.00%
PIK Rate	[17]	2.00%			2.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					321
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					3,341
Gross Reductions					0
Ending balance	[17]	$ 3,341			3,341
Fair value		$ 3,341	[17]		$ 3,341	[17]		0
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[17]	17.40%			17.40%
Spread	[17]	10.00%			10.00%
PIK Rate	[17]	2.00%			2.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					345
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					3,341
Gross Reductions					0
Ending balance	[17]	$ 3,341			3,341
Fair value		3,341	[17]		3,341	[17]		0
Investment, Identifier [Axis]: ITA Holdings Group, LLC, Warrants
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					2,091
Gross Reductions					0
Ending balance	[10]	2,091			2,091
Fair value		2,091	[10]		2,091	[10]		$ 0
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C., Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11]	1,166			1,166
Fair value	[11]	$ 1,166			$ 1,166
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	12.43%			12.43%
Spread	[11],[12],[17]	7.00%			7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 1,957			$ 1,957
Fair value	[11],[12],[17]	$ 1,957			$ 1,957
Investment, Identifier [Axis]: Imaging Business Machines, L.L.C., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	12.45%			12.45%
Spread	[11],[12],[17]	7.00%			7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 20,611			$ 20,611
Fair value	[11],[12],[17]	$ 20,611			$ 20,611
Investment, Identifier [Axis]: Implus Footcare, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		14.30%	[11],[12],[17]		14.30%	[11],[12],[17]		13.98%	[13],[15]
Spread		7.75%	[11],[12],[17]		7.75%	[11],[12],[17]		7.75%	[13],[15]
PIK Rate		1.00%	[11],[12],[17]		1.00%	[11],[12],[17]		1.50%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 17,464
Ending balance	[11],[12],[17]	$ 17,161			17,161
Fair value		17,161	[11],[12],[17]		17,161	[11],[12],[17]		$ 17,464	[13],[15]
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Common Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(790)
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					18,300
Gross Reductions					790
Ending balance	[11]	17,510			17,510
Fair value		17,510	[11]		17,510	[11]		0
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				0
Fair value	[13]							$ 0
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Preferred Stock (non-voting) 1
Schedule of Investments [Line Items]
Total Rate	[13]							6.00%
PIK Rate	[13]							6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				0
Fair value	[13]							$ 0
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Preferred Stock (non-voting) 2
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				0
Fair value	[13]							$ 0
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[13],[15],[55]							13.00%
Spread	[13],[15],[55]							5.50%
PIK Rate	[13],[15],[55]							13.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15],[55]				7,027
Fair value	[13],[15],[55]							$ 7,027
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[13],[22]							6.00%
PIK Rate	[13],[22]							6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[22]				7,633
Fair value	[13],[22]							$ 7,633
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[13],[14]							14.42%
Spread	[13],[14]							10.00%
PIK Rate	[13],[14]							14.42%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14]				769
Fair value	[13],[14]							$ 769
Investment, Identifier [Axis]: Independent Pet Partners Intermediate Holdings, LLC, Warrants
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[16],[56]				0
Fair value	[13],[16],[56]							0
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[29]				600
Ending balance	[11],[30]	620			620
Fair value		$ 620	[11],[30]		$ 620	[11],[30]		$ 600	[13],[29]
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Total Rate		10.00%	[11],[20],[30]		10.00%	[11],[20],[30]		10.00%	[13],[19],[29]
PIK Rate		10.00%	[11],[20],[30]		10.00%	[11],[20],[30]		10.00%	[13],[19],[29]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[19],[29]				$ 145
Ending balance	[11],[20],[30]	$ 157			157
Fair value		$ 157	[11],[20],[30]		$ 157	[11],[20],[30]		$ 145	[13],[19],[29]
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Total Rate		20.00%	[11],[20],[30]		20.00%	[11],[20],[30]		20.00%	[13],[19],[29]
PIK Rate		20.00%	[11],[20],[30]		20.00%	[11],[20],[30]		20.00%	[13],[19],[29]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[19],[29]				$ 93
Ending balance	[11],[20],[30]	$ 104			104
Fair value		$ 104	[11],[20],[30]		$ 104	[11],[20],[30]		$ 93	[13],[19],[29]
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.35%	[11],[12],[17],[57]		12.35%	[11],[12],[17],[57]		11.50%	[13],[15]
Spread		6.75%	[11],[12],[17],[57]		6.75%	[11],[12],[17],[57]		6.75%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 463
Ending balance	[11],[12],[17],[57]	$ 1,004			1,004
Fair value		$ 1,004	[11],[12],[17],[57]		$ 1,004	[11],[12],[17],[57]		$ 463	[13],[15]
Investment, Identifier [Axis]: Industrial Services Acquisition, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.18%	[11],[12],[17]		12.18%	[11],[12],[17]		11.50%	[13],[15]
Spread		6.75%	[11],[12],[17]		6.75%	[11],[12],[17]		6.75%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 19,239
Ending balance	[11],[12],[17]	$ 19,093			19,093
Fair value		19,093	[11],[12],[17]		19,093	[11],[12],[17]		$ 19,239	[13],[15]
Investment, Identifier [Axis]: Infinity X1 Holdings, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					4,000
Gross Reductions					0
Ending balance		4,000			4,000
Fair value		$ 4,000			$ 4,000			0
Investment, Identifier [Axis]: Infinity X1 Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.00%			13.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					1,391
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					17,843
Gross Reductions					225
Ending balance		$ 17,618			17,618
Fair value		$ 17,618			$ 17,618			$ 0
Investment, Identifier [Axis]: Infolinks Media Buyco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	11.17%			11.17%
Spread		5.75%	[11],[12],[17]		5.75%	[11],[12],[17]		5.50%	[13],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15],[16]				$ (19)
Ending balance	[11],[12],[17]	$ 1,508			1,508
Fair value		$ 1,508	[11],[12],[17]		$ 1,508	[11],[12],[17]		$ (19)	[13],[15],[16]
Investment, Identifier [Axis]: Infolinks Media Buyco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.17%	[11],[12],[17]		11.17%	[11],[12],[17]		10.23%	[13],[15]
Spread		5.75%	[11],[12],[17]		5.75%	[11],[12],[17]		5.50%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 8,593
Ending balance	[11],[12],[17]	$ 8,528			8,528
Fair value		8,528	[11],[12],[17]		8,528	[11],[12],[17]		$ 8,593	[13],[15]
Investment, Identifier [Axis]: Insight Borrower Corporation, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11]	656			656
Fair value	[11]	$ 656			$ 656
Investment, Identifier [Axis]: Insight Borrower Corporation, Secured Debt 1
Schedule of Investments [Line Items]
Spread	[11],[12],[18]	6.25%			6.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[18]	$ (73)			$ (73)
Fair value	[11],[12],[18]	$ (73)			$ (73)
Investment, Identifier [Axis]: Insight Borrower Corporation, Secured Debt 2
Schedule of Investments [Line Items]
Spread	[11],[12],[18]	6.25%			6.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[18]	$ (59)			$ (59)
Fair value	[11],[12],[18]	$ (59)			$ (59)
Investment, Identifier [Axis]: Insight Borrower Corporation, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	11.57%			11.57%
Spread	[11],[12],[17]	6.25%			6.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 13,992			$ 13,992
Fair value	[11],[12],[17]	13,992			13,992
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11]	417			417
Fair value	[11]	$ 417			$ 417
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	13.49%			13.49%
Spread	[11],[12],[17]	8.00%			8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 616			$ 616
Fair value	[11],[12],[17]	$ 616			$ 616
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	13.40%			13.40%
Spread	[11],[12],[17]	8.00%			8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 7,252			$ 7,252
Fair value	[11],[12],[17]	$ 7,252			$ 7,252
Investment, Identifier [Axis]: Inspire Aesthetics Management, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	13.40%			13.40%
Spread	[11],[12],[17]	8.00%			8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 2,917			$ 2,917
Fair value	[11],[12],[17]	2,917			2,917
Investment, Identifier [Axis]: Integral Energy Services, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(990)
Amount of Interest, Fees or Dividends Credited to Income					32
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,280
Gross Additions					0
Gross Reductions					990
Ending balance	[11]	290			290
Fair value		$ 290	[11]		$ 290	[11]		1,280
Investment, Identifier [Axis]: Integral Energy Services, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	13.01%			13.01%
Spread	[11],[12],[17]	7.50%			7.50%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					(750)
Amount of Interest, Fees or Dividends Credited to Income					1,578
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					15,769
Gross Additions					50
Gross Reductions					750
Ending balance	[11],[12],[17]	$ 15,069			15,069
Fair value		15,069	[11],[12],[17]		15,069	[11],[12],[17]		15,769
Investment, Identifier [Axis]: Interface Security Systems, L.L.C, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				0
Ending balance	[11]	0			0
Fair value		$ 0	[11]		$ 0	[11]		$ 0	[13]
Investment, Identifier [Axis]: Interface Security Systems, L.L.C, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.51%	[11],[17],[26],[58]		15.51%	[11],[17],[26],[58]		14.22%	[13],[59]
Spread		10.00%	[11],[17],[26],[58]		10.00%	[11],[17],[26],[58]		10.00%	[13],[59]
PIK Rate	[11],[17],[26],[58]	15.51%			15.51%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[59]				$ 1,682
Ending balance	[11],[17],[26],[58]	$ 1,781			1,781
Fair value		$ 1,781	[11],[17],[26],[58]		$ 1,781	[11],[17],[26],[58]		$ 1,682	[13],[59]
Investment, Identifier [Axis]: Interface Security Systems, L.L.C, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.43%	[11],[12],[17],[21],[26]		12.43%	[11],[12],[17],[21],[26]		12.07%	[13],[15],[22]
Spread		7.00%	[11],[12],[17],[21],[26]		7.00%	[11],[12],[17],[21],[26]		7.00%	[13],[15],[22]
PIK Rate		12.43%	[11],[12],[17],[21],[26]		12.43%	[11],[12],[17],[21],[26]		1.00%	[13],[15],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15],[22]				$ 1,082
Ending balance	[11],[12],[17],[21],[26]	$ 535			535
Fair value		$ 535	[11],[12],[17],[21],[26]		$ 535	[11],[12],[17],[21],[26]		$ 1,082	[13],[15],[22]
Investment, Identifier [Axis]: Intermedia Holdings, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.43%	[8],[12],[17]		11.43%	[8],[12],[17]		10.38%	[7],[15]
Spread		6.00%	[8],[12],[17]		6.00%	[8],[12],[17]		6.00%	[7],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]				$ 15,811
Ending balance	[8],[12],[17]	$ 19,318			19,318
Fair value		$ 19,318	[8],[12],[17]		$ 19,318	[8],[12],[17]		$ 15,811	[7],[15]
Investment, Identifier [Axis]: Invincible Boat Company, LLC., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.15%	[11],[12]		12.15%	[11],[12]		10.14%	[13],[15]
Spread		6.50%	[11],[12]		6.50%	[11],[12]		6.50%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 622
Ending balance	[11],[12]	$ 302			302
Fair value		$ 302	[11],[12]		$ 302	[11],[12]		$ 622	[13],[15]
Investment, Identifier [Axis]: Invincible Boat Company, LLC., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.15%	[11],[12]		12.15%	[11],[12]		10.17%	[13],[15]
Spread		6.50%	[11],[12]		6.50%	[11],[12]		6.50%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 16,889
Ending balance	[11],[12]	$ 16,373			16,373
Fair value		16,373	[11],[12]		16,373	[11],[12]		$ 16,889	[13],[15]
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					74		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,798		1,798
Gross Additions					1,032		0
Gross Reductions					0		0
Ending balance		2,830		1,798	2,830		1,798
Fair value		$ 2,830		$ 1,798	$ 2,830		$ 1,798	$ 1,798		1,798
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.50%		12.50%	13.50%		12.50%	12.50%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					465		443
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,500		4,557
Gross Additions					5		7
Gross Reductions					20		0
Ending balance		$ 4,485		$ 4,564	4,485		4,564
Fair value		$ 4,485		$ 4,564	$ 4,485		$ 4,564	$ 4,500		4,557
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.50%		12.50%	13.50%		12.50%	12.50%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					323		308
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					3,130		3,170
Gross Additions					4		4
Gross Reductions					14		0
Ending balance		$ 3,120		$ 3,174	3,120		3,174
Fair value		$ 3,120		$ 3,174	$ 3,120		$ 3,174	$ 3,130		3,170
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		13.50%		12.50%	13.50%		12.50%	12.50%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					908		848
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					8,944		8,944
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 8,944		$ 8,944	8,944		8,944
Fair value		$ 8,944		$ 8,944	$ 8,944		$ 8,944	$ 8,944		8,944
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		13.50%		12.50%	13.50%		12.50%	12.50%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					2,021		1,926
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					19,559		19,805
Gross Additions					25		30
Gross Reductions					88		0
Ending balance		$ 19,496		$ 19,835	19,496		19,835
Fair value		$ 19,496		19,835	$ 19,496		19,835	$ 19,559		19,805
Investment, Identifier [Axis]: Iron-Main Investments, LLC, Secured Debt 5
Schedule of Investments [Line Items]
Total Rate		13.50%			13.50%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					1,298
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					10,887
Gross Reductions					438
Ending balance		$ 10,449			10,449
Fair value		10,449			10,449			$ 0
Investment, Identifier [Axis]: Isagenix International, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[8]	0			0
Fair value	[8]	$ 0			$ 0
Investment, Identifier [Axis]: Isagenix International, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		10.59%	[8],[12],[17]		10.59%	[8],[12],[17]		9.93%	[7],[15],[22]
Spread		5.50%	[8],[12],[17]		5.50%	[8],[12],[17]		7.75%	[7],[15],[22]
PIK Rate	[8],[12],[17]	8.09%			8.09%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15],[22]				$ 1,537
Ending balance	[8],[12],[17]	$ 2,304			2,304
Fair value		2,304	[8],[12],[17]		2,304	[8],[12],[17]		$ 1,537	[7],[15],[22]
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				2,840
Ending balance	[11]	2,230			2,230
Fair value		$ 2,230	[11]		$ 2,230	[11]		$ 2,840	[13]
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	11.59%			11.59%
Spread		6.00%	[11],[12],[17]		6.00%	[11],[12],[17]		6.00%	[13],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15],[16]				$ (135)
Ending balance	[11],[12],[17]	$ 1,684			1,684
Fair value		$ 1,684	[11],[12],[17]		$ 1,684	[11],[12],[17]		$ (135)	[13],[15],[16]
Investment, Identifier [Axis]: JTI Electrical & Mechanical, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.66%	[11],[12],[17]		11.66%	[11],[12],[17]		10.73%	[13],[15]
Spread		6.00%	[11],[12],[17]		6.00%	[11],[12],[17]		6.00%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 36,947
Ending balance	[11],[12],[17]	$ 36,237			36,237
Fair value		36,237	[11],[12],[17]		36,237	[11],[12],[17]		$ 36,947	[13],[15]
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Preferred Equity
Schedule of Investments [Line Items]
Total Rate	[13],[19]							12.00%
PIK Rate	[13],[19]							12.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[19]				623
Ending balance	[11]	500			500
Fair value		$ 500	[11]		$ 500	[11]		$ 623	[13],[19]
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.45%	[11],[12],[17]		12.45%	[11],[12],[17]		12.23%	[13],[15]
Spread		7.00%	[11],[12],[17]		7.00%	[11],[12],[17]		7.50%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 500
Ending balance	[11],[12],[17]	$ 842			842
Fair value		$ 842	[11],[12],[17]		$ 842	[11],[12],[17]		$ 500	[13],[15]
Investment, Identifier [Axis]: Jackmont Hospitality, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.43%	[11],[12],[17]		12.43%	[11],[12],[17]		12.23%	[13],[15]
Spread		7.00%	[11],[12],[17]		7.00%	[11],[12],[17]		7.50%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 2,079
Ending balance	[11],[12],[17]	$ 2,000			2,000
Fair value		2,000	[11],[12],[17]		2,000	[11],[12],[17]		$ 2,079	[13],[15]
Investment, Identifier [Axis]: Jensen Jewelers of Idaho, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(2,550)		2,550
Amount of Interest, Fees or Dividends Credited to Income					983		1,996
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					14,970	[15]	12,420
Gross Additions					0		2,550
Gross Reductions					2,550		0
Ending balance		12,420	[20]	14,970	12,420	[20]	14,970
Fair value		$ 12,420	[20]	$ 14,970	$ 12,420	[20]	$ 14,970	$ 14,970	[15]	12,420
Investment, Identifier [Axis]: Jensen Jewelers of Idaho, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate				12.25%			12.25%
Spread				6.75%			6.75%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(6)
Amount of Interest, Fees or Dividends Credited to Income							207
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							2,550
Gross Additions							6
Gross Reductions							106
Ending balance				$ 2,450			2,450
Fair value				2,450			2,450			2,550
Investment, Identifier [Axis]: Jensen Jewelers of Idaho, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.75%	[18]		6.75%	[18]		6.75%	[16]
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[16]				0
Gross Additions					0
Gross Reductions					0
Ending balance	[18]	$ 0			0
Fair value		$ 0	[18]		$ 0	[18]		$ 0	[16]
Investment, Identifier [Axis]: Jensen Jewelers of Idaho, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.25%	[12]		15.25%	[12]		13.75%	[15]
Spread		6.75%	[12]		6.75%	[12]		6.75%	[15]
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					(5)
Amount of Interest, Fees or Dividends Credited to Income					278
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15]				2,450
Gross Additions					5
Gross Reductions					455
Ending balance	[12]	$ 2,000			2,000
Fair value		2,000	[12]		2,000	[12]		$ 2,450	[15]
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7]				0
Ending balance	[8]	0			0
Fair value		$ 0	[8]		$ 0	[8]		$ 0	[7]
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		23.64%	[8],[17],[21]		23.64%	[8],[17],[21]		18.00%	[7]
Spread	[8],[17],[21]	18.00%			18.00%
PIK Rate	[8],[17],[21]	23.64%			23.64%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7]				$ 2,297
Ending balance	[8],[17],[21]	$ 1,977			1,977
Fair value		$ 1,977	[8],[17],[21]		$ 1,977	[8],[17],[21]		$ 2,297	[7]
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		21.48%	[8],[17],[21]		21.48%	[8],[17],[21]		19.75%	[7],[22]
Spread	[8],[17],[21]	16.00%			16.00%
PIK Rate		21.48%	[8],[17],[21]		21.48%	[8],[17],[21]		19.75%	[7],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[22]				$ 504
Ending balance	[8],[17],[21]	$ 143			143
Fair value		$ 143	[8],[17],[21]		$ 143	[8],[17],[21]		$ 504	[7],[22]
Investment, Identifier [Axis]: Joerns Healthcare, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[8],[17],[21]	21.48%			21.48%
Spread	[8],[17],[21]	16.00%			16.00%
PIK Rate	[8],[17],[21]	21.48%			21.48%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[8],[17],[21]	$ 137			$ 137
Fair value	[8],[17],[21]	137			137
Investment, Identifier [Axis]: Johnson Downie Opco, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					2,120		2,730
Amount of Interest, Fees or Dividends Credited to Income					253		808
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,540	[19]	3,150
Gross Additions					2,120		2,730
Gross Reductions					0		0
Ending balance		7,660	[20]	5,880	7,660	[20]	5,880
Fair value		$ 7,660	[20]	$ 5,880	$ 7,660	[20]	$ 5,880	$ 5,540	[19]	3,150
Investment, Identifier [Axis]: Johnson Downie Opco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				14.13%			14.13%
Spread		11.50%	[12],[17],[18]	11.50%	11.50%	[12],[17],[18]	11.50%	11.50%	[15],[16]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(3)		0
Amount of Interest, Fees or Dividends Credited to Income					10		10
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[15],[16]	(18)
Gross Additions					3		3
Gross Reductions					3		0
Ending balance		$ 0	[12],[17],[18]	$ (15)	0	[12],[17],[18]	(15)
Fair value		$ 0	[12],[17],[18]	$ (15)	$ 0	[12],[17],[18]	$ (15)	$ 0	[15],[16]	(18)
Investment, Identifier [Axis]: Johnson Downie Opco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		16.98%	[12],[17]	14.13%	16.98%	[12],[17]	14.13%	15.63%	[15]
Spread		11.50%	[12],[17]	11.50%	11.50%	[12],[17]	11.50%	11.50%	[15]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(19)		84
Amount of Interest, Fees or Dividends Credited to Income					1,247		1,109
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					9,999	[15]	11,362
Gross Additions					19		114
Gross Reductions					661		1,477
Ending balance		$ 9,357	[12],[17]	$ 9,999	9,357	[12],[17]	9,999
Fair value		9,357	[12],[17]	9,999	9,357	[12],[17]	9,999	$ 9,999	[15]	11,362
Investment, Identifier [Axis]: JorVet Holdings, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							468
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							0
Gross Additions							10,741
Gross Reductions							0
Ending balance				10,741			10,741
Fair value				$ 10,741			$ 10,741			0
Investment, Identifier [Axis]: JorVet Holdings, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					704
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19]				10,741
Gross Additions					0
Gross Reductions					0
Ending balance	[20]	10,741			10,741
Fair value		$ 10,741	[20]		$ 10,741	[20]		$ 10,741	[19]
Investment, Identifier [Axis]: JorVet Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%	12.00%		12.00%	12.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					2,373		1,881
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					25,432		0
Gross Additions					38		25,419
Gross Reductions					0		0
Ending balance		$ 25,470		$ 25,419	25,470		25,419
Fair value		25,470		25,419	25,470		25,419	$ 25,432		0
Investment, Identifier [Axis]: KBK Industries, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					2,800		770
Amount of Interest, Fees or Dividends Credited to Income					7,696		1,007
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					15,570	[19]	13,620
Gross Additions					2,800		770
Gross Reductions					0		0
Ending balance		18,370	[20]	14,390	18,370	[20]	14,390
Fair value		$ 18,370	[20]	14,390	$ 18,370	[20]	14,390	15,570	[19]	13,620
Investment, Identifier [Axis]: KBK Industries, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		9.00%			9.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					44
Amount of Interest, Fees or Dividends Credited to Income					444
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					6,000
Gross Reductions					900
Ending balance		$ 5,100			5,100
Fair value		$ 5,100			$ 5,100			$ 0
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		15.75%	[11],[12]		15.75%	[11],[12]		12.00%	[13],[15]
Spread		7.25%	[11],[12]		7.25%	[11],[12]		7.25%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 995
Ending balance	[11],[12]	$ 943			943
Fair value		$ 943	[11],[12]		$ 943	[11],[12]		$ 995	[13],[15]
Investment, Identifier [Axis]: KMS, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		15.75%	[11],[12]		15.75%	[11],[12]		12.00%	[13],[15]
Spread		7.25%	[11],[12]		7.25%	[11],[12]		7.25%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 7,022
Ending balance	[11],[12]	$ 6,793			6,793
Fair value		6,793	[11],[12]		6,793	[11],[12]		$ 7,022	[13],[15]
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					10
Amount of Interest, Fees or Dividends Credited to Income					91
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19],[29]				2,850
Gross Additions					10
Gross Reductions					0
Ending balance	[20],[30]	2,860			2,860
Fair value		2,860	[20],[30]		2,860	[20],[30]		2,850	[19],[29]
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							(3,060)
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							12,310
Gross Additions							0
Gross Reductions							3,060
Ending balance				9,250			9,250
Fair value				9,250			9,250			12,310
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							84
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							2,460
Gross Additions							0
Gross Reductions							0
Ending balance				2,460			2,460
Fair value				$ 2,460			$ 2,460			2,460
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					1,610
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					7,220
Gross Additions					1,610
Gross Reductions					0
Ending balance		8,830			8,830
Fair value		$ 8,830			$ 8,830			$ 7,220
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.00%		11.50%	12.00%		11.50%	11.50%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					2,033		1,818
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					20,374		20,324
Gross Additions					198		37
Gross Reductions					800		0
Ending balance		$ 19,772		$ 20,361	19,772		20,361
Fair value		$ 19,772		$ 20,361	$ 19,772		$ 20,361	$ 20,374		20,324
Investment, Identifier [Axis]: Kickhaefer Manufacturing Company, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		9.00%		9.00%	9.00%		9.00%	9.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					262		265
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					3,842		3,876
Gross Additions					1		1
Gross Reductions					29		26
Ending balance		$ 3,814		$ 3,851	3,814		3,851
Fair value		$ 3,814		3,851	$ 3,814		3,851	$ 3,842		3,876
Investment, Identifier [Axis]: Kore Wireless Group Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate		10.99%	[8],[17]		10.99%	[8],[17]		10.08%	[7],[14]
Spread		5.50%	[8],[17]		5.50%	[8],[17]		5.50%	[7],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[14]				$ 10,930
Ending balance	[8],[17]	$ 10,564			10,564
Fair value		10,564	[8],[17]		10,564	[8],[17]		$ 10,930	[7],[14]
Investment, Identifier [Axis]: L.F. Manufacturing Holdings, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							617
Amount of Unrealized Gain/(Loss)							(541)
Amount of Interest, Fees or Dividends Credited to Income							224
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							2,560
Gross Additions							617
Gross Reductions							3,177
Ending balance				0			0
Fair value				0			0			2,560
Investment, Identifier [Axis]: L.F. Manufacturing Holdings, LLC, Preferred Member Units (non-voting)
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							9
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							107
Gross Additions							10
Gross Reductions							117
Ending balance				0			0
Fair value				0			0			107
Investment, Identifier [Axis]: LKCM Headwater Investments I, L.P., LP Interests
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19],[35],[36],[37]				3,197
Ending balance	[20],[33],[38],[39]	3,354			3,354
Fair value		$ 3,354	[20],[33],[38],[39]		$ 3,354	[20],[33],[38],[39]		$ 3,197	[19],[35],[36],[37]
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.67%	[11],[12],[17]		12.67%	[11],[12],[17]		11.21%	[13],[14],[15]
Spread		7.25%	[11],[12],[17]		7.25%	[11],[12],[17]		7.25%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 8,047
Ending balance	[11],[12],[17]	$ 7,960			7,960
Fair value		$ 7,960	[11],[12],[17]		$ 7,960	[11],[12],[17]		$ 8,047	[13],[14],[15]
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.67%	[11],[12],[17]		12.67%	[11],[12],[17]		11.67%	[13],[14],[15]
Spread		7.25%	[11],[12],[17]		7.25%	[11],[12],[17]		7.25%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 9,130
Ending balance	[11],[12],[17]	$ 5,246			5,246
Fair value		$ 5,246	[11],[12],[17]		$ 5,246	[11],[12],[17]		$ 9,130	[13],[14],[15]
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.67%	[11],[12],[17]		12.67%	[11],[12],[17]		11.67%	[13],[14],[15]
Spread		7.25%	[11],[12],[17]		7.25%	[11],[12],[17]		7.25%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 10,749
Ending balance	[11],[12],[17]	$ 2,803			2,803
Fair value		$ 2,803	[11],[12],[17]		$ 2,803	[11],[12],[17]		$ 10,749	[13],[14],[15]
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	12.67%			12.67%
Spread	[11],[12],[17]	7.25%			7.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 1,056			$ 1,056
Fair value	[11],[12],[17]	$ 1,056			$ 1,056
Investment, Identifier [Axis]: LL Management, Inc., Secured Debt 5
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	12.67%			12.67%
Spread	[11],[12],[17]	7.25%			7.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 10,694			$ 10,694
Fair value	[11],[12],[17]	$ 10,694			$ 10,694
Investment, Identifier [Axis]: LLFlex, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		15.40%	[11],[12],[17]		15.40%	[11],[12],[17]		12.74%	[13],[15]
Spread		9.00%	[11],[12],[17]		9.00%	[11],[12],[17]		9.00%	[13],[15]
PIK Rate	[11],[12],[17]	1.00%			1.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 4,350
Ending balance	[11],[12],[17]	$ 3,970			3,970
Fair value		$ 3,970	[11],[12],[17]		$ 3,970	[11],[12],[17]		$ 4,350	[13],[15]
Investment, Identifier [Axis]: Lightbox Holdings, L.P., Secured Debt
Schedule of Investments [Line Items]
Total Rate		10.65%	[8],[17]		10.65%	[8],[17]		9.73%	[7]
Spread		5.00%	[8],[17]		5.00%	[8],[17]		5.00%	[7]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7]				$ 13,968
Ending balance	[8],[17]	$ 13,932			13,932
Fair value		$ 13,932	[8],[17]		$ 13,932	[8],[17]		$ 13,968	[7]
Investment, Identifier [Axis]: Logix Acquisition Company, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.48%	[11],[12]		11.48%	[11],[12]		10.13%	[13],[15]
Spread		5.75%	[11],[12]		5.75%	[11],[12]		5.75%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 16,221
Ending balance	[11],[12]	$ 19,166			19,166
Fair value		19,166	[11],[12]		19,166	[11],[12]		$ 16,221	[13],[15]
Investment, Identifier [Axis]: Looking Glass Investments, LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[35],[36]				25
Ending balance	[33],[38]	25			25
Fair value		$ 25	[33],[38]		$ 25	[33],[38]		$ 25	[35],[36]
Investment, Identifier [Axis]: MB2 Dental Solutions, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.42%	[8],[12],[17]		11.42%	[8],[12],[17]		10.42%	[7],[14],[15]
Spread		6.00%	[8],[12],[17]		6.00%	[8],[12],[17]		6.00%	[7],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[14],[15]				$ 8,338
Ending balance	[8],[12],[17]	$ 2,811			2,811
Fair value		$ 2,811	[8],[12],[17]		$ 2,811	[8],[12],[17]		$ 8,338	[7],[14],[15]
Investment, Identifier [Axis]: MB2 Dental Solutions, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.42%	[8],[12],[17]		11.42%	[8],[12],[17]		10.42%	[7],[14],[15]
Spread		6.00%	[8],[12],[17]		6.00%	[8],[12],[17]		6.00%	[7],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[14],[15]				$ 7,876
Ending balance	[8],[12],[17]	$ 3,945			3,945
Fair value		$ 3,945	[8],[12],[17]		$ 3,945	[8],[12],[17]		$ 7,876	[7],[14],[15]
Investment, Identifier [Axis]: MB2 Dental Solutions, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[8],[12],[17]	11.42%			11.42%
Spread	[8],[12],[17]	6.00%			6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[8],[12],[17]	$ 3,472			$ 3,472
Fair value	[8],[12],[17]	$ 3,472			$ 3,472
Investment, Identifier [Axis]: MB2 Dental Solutions, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[8],[12],[17]	11.42%			11.42%
Spread	[8],[12],[17]	6.00%			6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[8],[12],[17]	$ 7,816			$ 7,816
Fair value	[8],[12],[17]	7,816			7,816
Investment, Identifier [Axis]: MH Corbin Holding LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					330		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0		0
Gross Additions					330		0
Gross Reductions					0		0
Ending balance		330		0	330		0
Fair value		330		0	330		0	0		0
Investment, Identifier [Axis]: MH Corbin Holding LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0		0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		0		0	0		0
Fair value		$ 0		$ 0	$ 0		$ 0	$ 0		0
Investment, Identifier [Axis]: MH Corbin Holding LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.00%	[26]	13.00%	13.00%	[26]	13.00%	13.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					1,229		(1,220)
Amount of Interest, Fees or Dividends Credited to Income					581		795
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,548		5,934
Gross Additions					1,229		9
Gross Reductions					675		3,234
Ending balance		$ 5,102	[26]	$ 2,709	5,102	[26]	2,709
Fair value		5,102	[26]	2,709	5,102	[26]	2,709	$ 4,548		5,934
Investment, Identifier [Axis]: MS Private Loan Fund I, LP, LP Interests
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					1,240
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19],[35],[36],[37]				14,833
Gross Additions					0
Gross Reductions					306
Ending balance	[20],[33],[38],[39]	14,527			14,527
Fair value		14,527	[20],[33],[38],[39]		14,527	[20],[33],[38],[39]		14,833	[19],[35],[36],[37]
Investment, Identifier [Axis]: MS Private Loan Fund I, LP, Secured Debt
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[16],[35],[36]				0
Ending balance	[18],[33],[38]	0			0
Fair value		0	[18],[33],[38]		0	[18],[33],[38]		0	[16],[35],[36]
Investment, Identifier [Axis]: MS Private Loan Fund I, LP, 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					19
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance		0			0
Fair value		0			0			0
Investment, Identifier [Axis]: MS Private Loan Fund I, LP, Secured Debt 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance		0			0
Fair value		0			0			0
Investment, Identifier [Axis]: MS Private Loan Fund II, LP, Interests
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[33],[38],[39]	1,152			1,152
Fair value	[33],[38],[39]	1,152			1,152
Investment, Identifier [Axis]: MS Private Loan Fund II, LP, LP Interests
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					1,152
Gross Reductions					0
Ending balance		1,152			1,152
Fair value		$ 1,152			$ 1,152			0
Investment, Identifier [Axis]: MS Private Loan Fund II, LP, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[12],[17],[33],[38]	8.88%			8.88%
Spread	[12],[17],[33],[38]	3.50%			3.50%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					72
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					10,848
Gross Reductions					0
Ending balance	[12],[17],[33],[38]	$ 10,848			10,848
Fair value		10,848	[12],[17],[33],[38]		10,848	[12],[17],[33],[38]		0
Investment, Identifier [Axis]: MS Private Loan Fund, LP Interests
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							20
Amount of Interest, Fees or Dividends Credited to Income							437
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							2,581
Gross Additions							11,770
Gross Reductions							0
Ending balance				14,351			14,351
Fair value				14,351			14,351			2,581
Investment, Identifier [Axis]: MSC Adviser I, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					23,201		(27,910)
Amount of Interest, Fees or Dividends Credited to Income					8,085		5,620
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					122,930	[19],[60]	140,400
Gross Additions					23,201		0
Gross Reductions					0		27,910
Ending balance		146,131	[20]	112,490	146,131	[20]	112,490
Fair value		146,131	[20]	112,490	146,131	[20]	112,490	122,930	[19],[60]	140,400
Investment, Identifier [Axis]: MSC Income Fund, Inc., Common Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					61		11
Amount of Interest, Fees or Dividends Credited to Income					93		15
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					753	[19],[35],[36]	0
Gross Additions					5,561		761
Gross Reductions					0		0
Ending balance		6,314	[20],[33],[38]	761	6,314	[20],[33],[38]	761
Fair value		$ 6,314	[20],[33],[38]	761	$ 6,314	[20],[33],[38]	761	$ 753	[19],[35],[36]	0
Investment, Identifier [Axis]: Mako Steel, LP, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.56%	[11],[12]		12.56%	[11],[12]		11.79%	[13],[15],[61]
Spread		7.25%	[11],[12]		7.25%	[11],[12]		7.25%	[13],[15],[61]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15],[61]				$ 3,083
Ending balance	[11],[12]	$ 730			730
Fair value		$ 730	[11],[12]		$ 730	[11],[12]		$ 3,083	[13],[15],[61]
Investment, Identifier [Axis]: Mako Steel, LP, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.56%	[11],[12],[17]		12.56%	[11],[12],[17]		11.09%	[13],[15]
Spread		7.00%	[11],[12],[17]		7.00%	[11],[12],[17]		7.25%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 15,224
Ending balance	[11],[12],[17]	$ 15,147			15,147
Fair value		15,147	[11],[12],[17]		15,147	[11],[12],[17]		$ 15,224	[13],[15]
Investment, Identifier [Axis]: Market Force Information, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					(16,642)		0
Amount of Unrealized Gain/(Loss)					16,642		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					16,642		0
Gross Reductions					16,642		0
Ending balance		0		0	0		0
Fair value		$ 0		$ 0	$ 0		$ 0	$ 0		0
Investment, Identifier [Axis]: Market Force Information, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				13.38%			13.38%	15.13%	[15]
Spread		11.00%		11.00%	11.00%		11.00%	11.00%	[15]
Amount of Realized Gain/(Loss)					$ (6,662)		$ 0
Amount of Unrealized Gain/(Loss)					163		0
Amount of Interest, Fees or Dividends Credited to Income					453		374
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					6,090	[15]	3,400
Gross Additions					804		1,600
Gross Reductions					6,894		0
Ending balance		$ 0		$ 5,000	0		5,000
Fair value		0		$ 5,000	0		$ 5,000	$ 6,090	[15]	3,400
Investment, Identifier [Axis]: Market Force Information, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				12.00%			12.00%	12.00%	[22]
PIK Rate				12.00%			12.00%	12.00%	[22]
Amount of Realized Gain/(Loss)					(25,952)		$ 0
Amount of Unrealized Gain/(Loss)					24,342		(6,065)
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,610	[22]	8,936
Gross Additions					24,342		0
Gross Reductions					25,952		6,065
Ending balance		0		$ 2,871	0		2,871
Fair value		0		2,871	0		2,871	$ 1,610	[22]	8,936
Investment, Identifier [Axis]: MetalForming AcquireCo, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,537
Fair value								$ 1,537
Investment, Identifier [Axis]: MetalForming AcquireCo, LLC, Preferred Equity
Schedule of Investments [Line Items]
Total Rate	[19]							8.00%
PIK Rate	[19]							8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19]				6,010
Fair value	[19]							$ 6,010
Investment, Identifier [Axis]: MetalForming AcquireCo, LLC, Secured Debt 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[16]				0
Fair value	[16]							$ 0
Investment, Identifier [Axis]: MetalForming AcquireCo, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate								12.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					23,576
Fair value								$ 23,576
Investment, Identifier [Axis]: MetalForming Holding, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20]	1,400			1,400
Fair value	[20]	$ 1,400			$ 1,400
Investment, Identifier [Axis]: MetalForming Holding, LLC, Preferred Equity
Schedule of Investments [Line Items]
Total Rate	[20]	8.00%			8.00%
PIK Rate	[20]	8.00%			8.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[20]	$ 6,364			$ 6,364
Fair value	[20]	6,364			6,364
Investment, Identifier [Axis]: MetalForming Holding, LLC, Secured Debt 1
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[18]	0			0
Fair value	[18]	$ 0			$ 0
Investment, Identifier [Axis]: MetalForming Holding, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.75%			12.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		$ 23,611			$ 23,611
Fair value		23,611			23,611
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(137)
Amount of Interest, Fees or Dividends Credited to Income					821
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,537
Gross Additions					0
Gross Reductions					137
Ending balance		1,400			1,400
Fair value		$ 1,400			$ 1,400			1,537
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Preferred Equity
Schedule of Investments [Line Items]
Total Rate		8.00%			8.00%
PIK Rate		8.00%			8.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					237
Amount of Interest, Fees or Dividends Credited to Income					148
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					6,010
Gross Additions					354
Gross Reductions					0
Ending balance		$ 6,364			6,364
Fair value		6,364			6,364			6,010
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					8
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance		0			0
Fair value		$ 0			$ 0			0
Investment, Identifier [Axis]: Metalforming Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.75%			12.75%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					2,305
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					23,576
Gross Additions					35
Gross Reductions					0
Ending balance		$ 23,611			23,611
Fair value		$ 23,611			$ 23,611			$ 23,576
Investment, Identifier [Axis]: Microbe Formulas, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.25%	[11],[12],[17],[18]		6.25%	[11],[12],[17],[18]		6.25%	[13],[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15],[16]				$ (63)
Ending balance	[11],[12],[17],[18]	$ (54)			(54)
Fair value		$ (54)	[11],[12],[17],[18]		$ (54)	[11],[12],[17],[18]		$ (63)	[13],[14],[15],[16]
Investment, Identifier [Axis]: Microbe Formulas, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.42%	[11],[12],[17]		11.42%	[11],[12],[17]		9.86%	[13],[14],[15]
Spread		6.00%	[11],[12],[17]		6.00%	[11],[12],[17]		6.25%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 25,181
Ending balance	[11],[12],[17]	$ 23,413			23,413
Fair value		$ 23,413	[11],[12],[17]		$ 23,413	[11],[12],[17]		$ 25,181	[13],[14],[15]
Investment, Identifier [Axis]: Mills Fleet Farm Group, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.02%	[11],[12],[17]		12.02%	[11],[12],[17]		10.66%	[13],[15]
Spread		6.50%	[11],[12],[17]		6.50%	[11],[12],[17]		6.25%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 18,338
Ending balance	[11],[12],[17]	$ 17,991			17,991
Fair value		17,991	[11],[12],[17]		17,991	[11],[12],[17]		$ 18,338	[13],[15]
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[36],[53]				889
Ending balance	[11],[33],[34]	556			556
Fair value		$ 556	[11],[33],[34]		$ 556	[11],[33],[34]		$ 889	[13],[36],[53]
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[33],[34]	14.00%			14.00%
Spread	[13],[15],[16],[36],[53]							7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15],[16],[36],[53]				$ (64)
Ending balance	[11],[33],[34]	$ 3,599			3,599
Fair value		$ 3,599	[11],[33],[34]		$ 3,599	[11],[33],[34]		$ (64)	[13],[15],[16],[36],[53]
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.00%	[11],[33],[34]		14.00%	[11],[33],[34]		11.73%	[13],[15],[36],[53]
Spread	[13],[15],[36],[53]							7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15],[36],[53]				$ 10,714
Ending balance	[11],[33],[34]	$ 10,587			10,587
Fair value		$ 10,587	[11],[33],[34]		$ 10,587	[11],[33],[34]		$ 10,714	[13],[15],[36],[53]
Investment, Identifier [Axis]: MonitorUS Holding, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		14.00%	[11],[33],[34]		14.00%	[11],[33],[34]		11.73%	[13],[15],[36],[53]
Spread	[13],[15],[36],[53]							7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15],[36],[53]				$ 17,038
Ending balance	[11],[33],[34]	$ 17,038			17,038
Fair value		17,038	[11],[33],[34]		17,038	[11],[33],[34]		$ 17,038	[13],[15],[36],[53]
Investment, Identifier [Axis]: Mystic Logistics Holdings, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					4,320		11,860
Amount of Interest, Fees or Dividends Credited to Income					3,142		2,860
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					22,830	[19]	8,840
Gross Additions					4,320		11,860
Gross Reductions					0		0
Ending balance		27,150	[20]	20,700	27,150	[20]	20,700
Fair value		27,150	[20]	$ 20,700	27,150	[20]	$ 20,700	22,830	[19]	8,840
Investment, Identifier [Axis]: Mystic Logistics Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				10.00%			10.00%
Amount of Realized Gain/(Loss)					0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					3		3
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[16]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		0	[18]	$ 0	0	[18]	0
Fair value		$ 0	[18]	$ 0	$ 0	[18]	$ 0	$ 0	[16]	0
Investment, Identifier [Axis]: Mystic Logistics Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.00%		10.00%	10.00%		10.00%	10.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		(1)
Amount of Interest, Fees or Dividends Credited to Income					436		460
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,746		6,378
Gross Additions					0		1
Gross Reductions					0		633
Ending balance		$ 5,746		$ 5,746	5,746		5,746
Fair value		5,746		5,746	5,746		5,746	$ 5,746		6,378
Investment, Identifier [Axis]: NAPCO Precast, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					330		(2,380)
Amount of Interest, Fees or Dividends Credited to Income					(189)		4
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					11,830		13,560
Gross Additions					330		0
Gross Reductions					0		2,380
Ending balance		12,160		11,180	12,160		11,180
Fair value		$ 12,160		11,180	$ 12,160		11,180	$ 11,830		13,560
Investment, Identifier [Axis]: NBG Acquisition Inc, Secured Debt
Schedule of Investments [Line Items]
Total Rate		10.71%	[8],[12],[21]		10.71%	[8],[12],[21]		9.67%	[7],[15]
Spread		5.50%	[8],[12],[21]		5.50%	[8],[12],[21]		5.50%	[7],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]				$ 1,251
Ending balance	[8],[12],[21]	$ 154			154
Fair value		154	[8],[12],[21]		154	[8],[12],[21]		$ 1,251	[7],[15]
Investment, Identifier [Axis]: NRP Jones, LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19]				4,790
Fair value	[19]							4,790
Investment, Identifier [Axis]: NRP Jones, LLC, Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							(1,585)
Amount of Interest, Fees or Dividends Credited to Income							449
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							6,200
Gross Additions							0
Gross Reductions							1,585
Ending balance		90	[20]	4,615	90	[20]	4,615
Fair value		90	[20]	4,615	90	[20]	4,615			6,200
Investment, Identifier [Axis]: NRP Jones, LLC, Member Units 1.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(2,265)
Amount of Interest, Fees or Dividends Credited to Income					36
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,615
Gross Additions					0
Gross Reductions					2,265
Ending balance		2,350			2,350
Fair value		2,350			2,350			4,615
Investment, Identifier [Axis]: NRP Jones, LLC, Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							(65)
Amount of Interest, Fees or Dividends Credited to Income							13
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							240
Gross Additions							0
Gross Reductions							65
Ending balance		2,350	[20]	175	2,350	[20]	175
Fair value		2,350	[20]	$ 175	2,350	[20]	$ 175			240
Investment, Identifier [Axis]: NRP Jones, LLC, Member Units 2.1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(86)
Amount of Interest, Fees or Dividends Credited to Income					(2)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					175
Gross Additions					0
Gross Reductions					85
Ending balance		90			90
Fair value		$ 90			$ 90			$ 175
Investment, Identifier [Axis]: NRP Jones, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%	12.00%		12.00%	12.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					189		189
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,080		2,080
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 2,080		$ 2,080	2,080		2,080
Fair value		$ 2,080		2,080	$ 2,080		2,080	$ 2,080		2,080
Investment, Identifier [Axis]: NTM Acquisition Corp., Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.79%	[8],[12],[17]		13.79%	[8],[12],[17]		9.50%	[7],[15]
Spread		7.25%	[8],[12],[17]		7.25%	[8],[12],[17]		6.25%	[7],[15]
PIK Rate		1.00%	[8],[12],[17]		1.00%	[8],[12],[17]		1.00%	[7],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]				$ 4,228
Ending balance	[8],[12],[17]	$ 4,010			4,010
Fair value		$ 4,010	[8],[12],[17]		$ 4,010	[8],[12],[17]		$ 4,228	[7],[15]
Investment, Identifier [Axis]: NWN Corporation, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[13],[14],[15],[48]							10.85%
Spread		9.00%	[11],[12],[17],[18]		9.00%	[11],[12],[17],[18]		8.00%	[13],[14],[15],[48]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15],[48]				$ 3,720
Ending balance	[11],[12],[17],[18]	$ (97)			(97)
Fair value		$ (97)	[11],[12],[17],[18]		$ (97)	[11],[12],[17],[18]		$ 3,720	[13],[14],[15],[48]
Investment, Identifier [Axis]: NWN Corporation, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		14.52%	[11],[12],[17]		14.52%	[11],[12],[17]		12.56%	[13],[14],[15]
Spread		9.00%	[11],[12],[17]		9.00%	[11],[12],[17]		8.00%	[13],[14],[15]
PIK Rate	[11],[12],[17]	1.00%			1.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 37,616
Ending balance	[11],[12],[17]	$ 39,404			39,404
Fair value		$ 39,404	[11],[12],[17]		$ 39,404	[11],[12],[17]		$ 37,616	[13],[14],[15]
Investment, Identifier [Axis]: NWN Corporation, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		20.00%	[11]		20.00%	[11]		20.00%	[13]
PIK Rate		20.00%	[11]		20.00%	[11]		20.00%	[13]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				$ 6,194
Ending balance	[11]	$ 7,563			7,563
Fair value		7,563	[11]		7,563	[11]		$ 6,194	[13]
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					6,730		0
Amount of Interest, Fees or Dividends Credited to Income					591		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					7,700		7,700
Gross Additions					6,730		0
Gross Reductions					0		0
Ending balance		14,430	[20]	7,700	14,430	[20]	7,700
Fair value		$ 14,430	[20]	$ 7,700	$ 14,430	[20]	$ 7,700	$ 7,700		7,700
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.00%		8.71%	12.00%		8.71%
Spread				7.00%			7.00%	7.00%	[15],[16]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 0	[15],[16]	0
Gross Additions							0
Gross Reductions							0
Ending balance		$ 25,794		$ 0	25,794		0
Fair value		$ 25,794		$ 0	$ 25,794		$ 0	$ 0	[15],[16]	0
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt 1.1
Schedule of Investments [Line Items]
Spread		7.00%			7.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					7
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance		$ 0			0
Fair value		$ 0			$ 0			$ 0
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%	12.00%		12.00%	12.00%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							121
Amount of Interest, Fees or Dividends Credited to Income							1,146
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 20,094		4,829
Gross Additions							13,452
Gross Reductions							0
Ending balance		$ 10,500		$ 18,281	10,500		18,281
Fair value		$ 10,500		$ 18,281	$ 10,500		$ 18,281	$ 20,094		4,829
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt 2.1
Schedule of Investments [Line Items]
Total Rate		12.00%			12.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					14
Amount of Interest, Fees or Dividends Credited to Income					2,104
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					20,094
Gross Additions					5,700
Gross Reductions					0
Ending balance		$ 25,794			25,794
Fair value		$ 25,794			$ 25,794			$ 20,094
Investment, Identifier [Axis]: Nebraska Vet AcquireCo, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%	12.00%		12.00%	12.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(16)		71
Amount of Interest, Fees or Dividends Credited to Income					972		972
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					10,500		10,412
Gross Additions					16		88
Gross Reductions					16		0
Ending balance		$ 10,500		$ 10,500	10,500		10,500
Fair value		10,500		10,500	10,500		10,500	$ 10,500		10,412
Investment, Identifier [Axis]: NexRev LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					5,240		(2,913)
Amount of Interest, Fees or Dividends Credited to Income					171		60
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,110	[19]	2,690
Gross Additions					5,240		1,333
Gross Reductions					0		2,913
Ending balance		6,350	[20]	1,110	6,350	[20]	1,110
Fair value		6,350	[20]	$ 1,110	6,350	[20]	$ 1,110	1,110	[19]	2,690
Investment, Identifier [Axis]: NexRev LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				11.00%			11.00%
Amount of Realized Gain/(Loss)					0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		26
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[16]	800
Gross Additions					0		0
Gross Reductions					0		640
Ending balance		0	[18]	$ 160	0	[18]	160
Fair value		$ 0	[18]	$ 160	$ 0	[18]	$ 160	$ 0	[16]	800
Investment, Identifier [Axis]: NexRev LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.00%		11.00%	10.00%		11.00%	11.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					2,857		(928)
Amount of Interest, Fees or Dividends Credited to Income					880		1,560
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					8,477		13,245
Gross Additions					2,914		0
Gross Reductions					1,653		4,192
Ending balance		$ 9,738		$ 9,053	9,738		9,053
Fair value		$ 9,738		9,053	$ 9,738		9,053	$ 8,477		13,245
Investment, Identifier [Axis]: NinjaTrader, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.25%	[11],[12],[17],[18]		6.25%	[11],[12],[17],[18]		6.25%	[13],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15],[16]				$ 0
Ending balance	[11],[12],[17],[18]	$ 0			0
Fair value		$ 0	[11],[12],[17],[18]		$ 0	[11],[12],[17],[18]		$ 0	[13],[15],[16]
Investment, Identifier [Axis]: NinjaTrader, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Spread		6.25%	[11],[12],[17],[18]		6.25%	[11],[12],[17],[18]		6.25%	[13],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15],[16]				$ (38)
Ending balance	[11],[12],[17],[18]	$ (24)			(24)
Fair value		$ (24)	[11],[12],[17],[18]		$ (24)	[11],[12],[17],[18]		$ (38)	[13],[15],[16]
Investment, Identifier [Axis]: NinjaTrader, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.40%	[11],[12],[17]		11.40%	[11],[12],[17]		9.99%	[13],[15]
Spread		6.00%	[11],[12],[17]		6.00%	[11],[12],[17]		6.25%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 21,666
Ending balance	[11],[12],[17]	$ 20,467			20,467
Fair value		20,467	[11],[12],[17]		20,467	[11],[12],[17]		$ 21,666	[13],[15]
Investment, Identifier [Axis]: NuStep, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							(3,300)
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							13,500
Gross Additions							0
Gross Reductions							3,300
Ending balance				10,200			10,200
Fair value				$ 10,200			$ 10,200			13,500
Investment, Identifier [Axis]: NuStep, LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					1,200
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					8,040
Gross Additions					1,200
Gross Reductions					0
Ending balance		9,240			9,240
Fair value		9,240			9,240			8,040
Investment, Identifier [Axis]: NuStep, LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,150
Gross Additions					0
Gross Reductions					0
Ending balance		5,150			5,150
Fair value		$ 5,150			$ 5,150			$ 5,150
Investment, Identifier [Axis]: NuStep, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.98%	[12],[17]	9.13%	11.98%	[12],[17]	9.13%	10.63%	[15]
Spread		6.50%	[12],[17]	6.50%	6.50%	[12],[17]	6.50%	6.50%	[15]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					364		208
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,399	[15]	1,720
Gross Additions					0		2,679
Gross Reductions					800		0
Ending balance		$ 3,599	[12],[17]	$ 4,399	3,599	[12],[17]	4,399
Fair value		$ 3,599	[12],[17]	$ 4,399	$ 3,599	[12],[17]	$ 4,399	$ 4,399	[15]	1,720
Investment, Identifier [Axis]: NuStep, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%	12.00%		12.00%	12.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		(4)
Amount of Interest, Fees or Dividends Credited to Income					1,687		1,612
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					18,414		17,240
Gross Additions					9		1,175
Gross Reductions					0		4
Ending balance		$ 18,423		$ 18,411	18,423		18,411
Fair value		18,423		18,411	18,423		18,411	$ 18,414		17,240
Investment, Identifier [Axis]: OMi Topco, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					9,820		470
Amount of Interest, Fees or Dividends Credited to Income					2,025		1,676
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					22,810	[19]	20,210
Gross Additions					9,820		470
Gross Reductions					0		0
Ending balance		32,630	[20]	20,680	32,630	[20]	20,680
Fair value		$ 32,630	[20]	$ 20,680	$ 32,630	[20]	$ 20,680	$ 22,810	[19]	20,210
Investment, Identifier [Axis]: OMi Topco, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%	12.00%		12.00%	12.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(37)		(41)
Amount of Interest, Fees or Dividends Credited to Income					1,400		1,625
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					15,750		18,000
Gross Additions					37		41
Gross Reductions					2,287		1,791
Ending balance		$ 13,500		$ 16,250	13,500		16,250
Fair value		$ 13,500		16,250	13,500		16,250	$ 15,750		18,000
Investment, Identifier [Axis]: OVG Business Services, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[13],[15]							10.64%
Spread	[13],[15]							6.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 13,094
Fair value	[13],[15]							$ 13,094
Investment, Identifier [Axis]: Obra Capital, Inc, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[8],[17]	11.43%			11.43%
Spread	[8],[17]	6.00%			6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[8],[17]	$ 14,775			$ 14,775
Fair value	[8],[17]	14,775			14,775
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0		0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		0		0	0		0
Fair value		$ 0		$ 0	$ 0		$ 0	$ 0		0
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Preferred Stock
Schedule of Investments [Line Items]
Total Rate		7.00%		7.00%	7.00%		7.00%	7.00%
PIK Rate		7.00%		7.00%	7.00%		7.00%	7.00%
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
Fair value		$ 0		$ 0	$ 0		$ 0	$ 0		0
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.00%	[21]	12.00%	12.00%	[21]	12.00%	12.00%	[22]
PIK Rate		12.00%	[21]	12.00%	12.00%	[21]	12.00%	12.00%	[22]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(196)		(273)
Amount of Interest, Fees or Dividends Credited to Income					0		28
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					569	[22]	935
Gross Additions					0		28
Gross Reductions					197		273
Ending balance		$ 372	[21]	$ 690	372	[21]	690
Fair value		$ 372	[21]	$ 690	$ 372	[21]	$ 690	$ 569	[22]	935
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%	[21]	12.00%	12.00%	[21]	12.00%	12.00%	[22]
PIK Rate		12.00%	[21]	12.00%	12.00%	[21]	12.00%	12.00%	[22]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(200)		(280)
Amount of Interest, Fees or Dividends Credited to Income					0		29
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					580	[22]	954
Gross Additions					0		29
Gross Reductions					200		280
Ending balance		$ 380	[21]	$ 703	380	[21]	703
Fair value		$ 380	[21]	$ 703	$ 380	[21]	$ 703	$ 580	[22]	954
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.00%	[21]	12.00%	12.00%	[21]	12.00%	12.00%	[22]
PIK Rate		12.00%	[21]	12.00%	12.00%	[21]	12.00%	12.00%	[22]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(431)		(602)
Amount of Interest, Fees or Dividends Credited to Income					0		62
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,249	[22]	2,055
Gross Additions					0		62
Gross Reductions					431		602
Ending balance		$ 818	[21]	$ 1,515	818	[21]	1,515
Fair value		$ 818	[21]	$ 1,515	$ 818	[21]	$ 1,515	$ 1,249	[22]	2,055
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Secured Debt 4
Schedule of Investments [Line Items]
Total Rate		12.00%	[21]	12.00%	12.00%	[21]	12.00%	12.00%	[22]
PIK Rate		12.00%	[21]	12.00%	12.00%	[21]	12.00%	12.00%	[22]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(900)		(1,255)
Amount of Interest, Fees or Dividends Credited to Income					0		129
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,606	[22]	4,285
Gross Additions					0		130
Gross Reductions					900		1,255
Ending balance		$ 1,706	[21]	$ 3,160	1,706	[21]	3,160
Fair value		$ 1,706	[21]	$ 3,160	$ 1,706	[21]	$ 3,160	$ 2,606	[22]	4,285
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Unsecured Debt
Schedule of Investments [Line Items]
Total Rate		10.00%	[21]	10.00%	10.00%	[21]	10.00%	10.00%	[22]
PIK Rate		10.00%	[21]	10.00%	10.00%	[21]	10.00%	10.00%	[22]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					305	[22]	192
Gross Additions					0		5
Gross Reductions					0		0
Ending balance		$ 305	[21]	$ 197	305	[21]	197
Fair value		305	[21]	197	305	[21]	197	$ 305	[22]	192
Investment, Identifier [Axis]: OnAsset Intelligence, Inc., Warrants
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[9]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		0	[10]	0	0	[10]	0
Fair value		0	[10]	0	0	[10]	0	0	[9]	0
Investment, Identifier [Axis]: Oneliance, LLC, Preferred Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,056		1,056
Gross Additions					72		0
Gross Reductions					0		0
Ending balance		1,128		1,056	1,128		1,056
Fair value		$ 1,128		$ 1,056	$ 1,128		$ 1,056	$ 1,056		1,056
Investment, Identifier [Axis]: Oneliance, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				13.56%			13.56%
Spread		11.00%	[12],[17],[18],[26]	11.00%	11.00%	[12],[17],[18],[26]	11.00%	11.00%	[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					0		0
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],[17],[18],[26]	$ 0	0	[12],[17],[18],[26]	0
Fair value		$ 0	[12],[17],[18],[26]	$ 0	$ 0	[12],[17],[18],[26]	$ 0	$ 0	[15],[16]	0
Investment, Identifier [Axis]: Oneliance, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		16.48%	[12]	13.56%	16.48%	[12]	13.56%	15.13%	[15]
Spread		11.00%	[12]	11.00%	11.00%	[12]	11.00%	11.00%	[15]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(61)		0
Amount of Interest, Fees or Dividends Credited to Income					681		536
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,559	[15]	5,547
Gross Additions					9		9
Gross Reductions					141		0
Ending balance		$ 5,427	[12]	$ 5,556	5,427	[12]	5,556
Fair value		5,427	[12]	5,556	5,427	[12]	5,556	$ 5,559	[15]	5,547
Investment, Identifier [Axis]: Orttech Holdings, LLC, Preferred Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					5,300		0
Amount of Interest, Fees or Dividends Credited to Income					909		579
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					11,750	[19],[29]	10,000
Gross Additions					5,300		0
Gross Reductions					0		0
Ending balance		17,050	[20],[30]	10,000	17,050	[20],[30]	10,000
Fair value		$ 17,050	[20],[30]	$ 10,000	$ 17,050	[20],[30]	$ 10,000	$ 11,750	[19],[29]	10,000
Investment, Identifier [Axis]: Orttech Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		11.00%	[12],[17],[18]	11.00%	11.00%	[12],[17],[18]	11.00%	11.00%	[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					0		16
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[15],[16]	175
Gross Additions					0		0
Gross Reductions					0		175
Ending balance		$ 0	[12],[17],[18]	$ 0	0	[12],[17],[18]	0
Fair value		$ 0	[12],[17],[18]	$ 0	$ 0	[12],[17],[18]	$ 0	$ 0	[15],[16]	175
Investment, Identifier [Axis]: Orttech Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		16.48%	[12],[17]	13.63%	16.48%	[12],[17]	13.63%	15.13%	[15]
Spread		11.00%	[12],[17]	11.00%	11.00%	[12],[17]	11.00%	11.00%	[15]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					127		0
Amount of Interest, Fees or Dividends Credited to Income					2,822		2,305
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					23,429	[15]	23,976
Gross Additions					171		41
Gross Reductions					1,400		600
Ending balance		$ 22,200	[12],[17]	$ 23,417	22,200	[12],[17]	23,417
Fair value		$ 22,200	[12],[17]	23,417	$ 22,200	[12],[17]	23,417	$ 23,429	[15]	23,976
Investment, Identifier [Axis]: Ospemifene Royalty Sub LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.50%	[11],[21]		11.50%	[11],[21]		11.50%	[13],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[22]				$ 103
Ending balance	[11],[21]	$ 61			61
Fair value		61	[11],[21]		61	[11],[21]		$ 103	[13],[22]
Investment, Identifier [Axis]: Other, Affiliate Investments
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0		0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		0		0	0		0
Fair value		0		0	0		0	0		0
Investment, Identifier [Axis]: Other, Control Investments
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0		0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		0		0	0		0
Fair value		0		0	0		0	0		0
Investment, Identifier [Axis]: PPL RVs, Inc., Common Stock 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(1,080)		5,150
Amount of Interest, Fees or Dividends Credited to Income					0		908
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					18,950	[19]	14,360
Gross Additions					0		5,150
Gross Reductions					1,080		0
Ending balance		17,870	[20]	19,510	17,870	[20]	19,510
Fair value		17,870	[20]	19,510	17,870	[20]	19,510	18,950	[19]	14,360
Investment, Identifier [Axis]: PPL RVs, Inc., Common Stock 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(163)		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					238		0
Gross Additions					0		157
Gross Reductions					163		0
Ending balance		75	[30]	157	75	[30]	157
Fair value		$ 75	[30]	$ 157	$ 75	[30]	$ 157	$ 238		0
Investment, Identifier [Axis]: PPL RVs, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		8.75%	[12],[17],[18]	7.00%	8.75%	[12],[17],[18]	7.00%	7.00%	[15],[16]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(1)		0
Amount of Interest, Fees or Dividends Credited to Income					1		79
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[15],[16]	727
Gross Additions					1		1,264
Gross Reductions					1		2,000
Ending balance		$ 0	[12],[17],[18]	$ (9)	0	[12],[17],[18]	(9)
Fair value		$ 0	[12],[17],[18]	$ (9)	$ 0	[12],[17],[18]	$ (9)	$ 0	[15],[16]	727
Investment, Identifier [Axis]: PPL RVs, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.98%	[12],[17]	8.75%	13.98%	[12],[17]	8.75%	10.25%	[15]
Spread		8.75%	[12],[17]	7.00%	8.75%	[12],[17]	7.00%	7.00%	[15]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(51)		239
Amount of Interest, Fees or Dividends Credited to Income					2,101		1,155
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					21,655	[15]	11,655
Gross Additions					51		8,000
Gross Reductions					1,416		0
Ending balance		$ 20,290	[12],[17]	$ 19,655	20,290	[12],[17]	19,655
Fair value		$ 20,290	[12],[17]	19,655	$ 20,290	[12],[17]	19,655	$ 21,655	[15]	11,655
Investment, Identifier [Axis]: PTL US Bidco, Inc, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[12],[33],[62]	14.22%			14.22%
Spread		6.75%	[11],[12],[33],[62]		6.75%	[11],[12],[33],[62]		7.25%	[13],[14],[15],[16],[36]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15],[16],[36]				$ (174)
Ending balance	[11],[12],[33],[62]	$ 3,907			3,907
Fair value		$ 3,907	[11],[12],[33],[62]		$ 3,907	[11],[12],[33],[62]		$ (174)	[13],[14],[15],[16],[36]
Investment, Identifier [Axis]: PTL US Bidco, Inc, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.39%	[11],[12],[17],[33]		13.39%	[11],[12],[17],[33]		11.80%	[13],[14],[15],[36]
Spread		7.75%	[11],[12],[17],[33]		7.75%	[11],[12],[17],[33]		7.25%	[13],[14],[15],[36]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15],[36]				$ 27,911
Ending balance	[11],[12],[17],[33]	$ 26,721			26,721
Fair value		$ 26,721	[11],[12],[17],[33]		$ 26,721	[11],[12],[17],[33]		$ 27,911	[13],[14],[15],[36]
Investment, Identifier [Axis]: Paragon Healthcare, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[13],[14],[15]							10.26%
Spread		5.75%	[11],[12],[17],[18]		5.75%	[11],[12],[17],[18]		5.75%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 530
Ending balance	[11],[12],[17],[18]	$ 0			0
Fair value		$ 0	[11],[12],[17],[18]		$ 0	[11],[12],[17],[18]		$ 530	[13],[14],[15]
Investment, Identifier [Axis]: Paragon Healthcare, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.17%	[11],[12],[17]		11.17%	[11],[12],[17]		9.96%	[13],[14],[15],[63]
Spread		5.75%	[11],[12],[17]		5.75%	[11],[12],[17]		5.75%	[13],[14],[15],[63]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15],[63]				$ 2,649
Ending balance	[11],[12],[17]	$ 3,221			3,221
Fair value		$ 3,221	[11],[12],[17]		$ 3,221	[11],[12],[17]		$ 2,649	[13],[14],[15],[63]
Investment, Identifier [Axis]: Paragon Healthcare, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.17%	[11],[12],[17]		11.17%	[11],[12],[17]		9.81%	[13],[14],[15]
Spread		5.75%	[11],[12],[17]		5.75%	[11],[12],[17]		5.75%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 17,939
Ending balance	[11],[12],[17]	$ 18,645			18,645
Fair value		18,645	[11],[12],[17]		18,645	[11],[12],[17]		$ 17,939	[13],[14],[15]
Investment, Identifier [Axis]: Pearl Meyer Topco LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							14,850
Amount of Interest, Fees or Dividends Credited to Income							5,754
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							26,970
Gross Additions							14,850
Gross Reductions							0
Ending balance				41,820			41,820
Fair value				41,820			41,820			26,970
Investment, Identifier [Axis]: Pearl Meyer Topco LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					830
Amount of Interest, Fees or Dividends Credited to Income					9,215
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19]				43,260
Gross Additions					830
Gross Reductions					0
Ending balance	[20]	44,090			44,090
Fair value		$ 44,090	[20]		$ 44,090	[20]		43,260	[19]
Investment, Identifier [Axis]: Pearl Meyer Topco LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.00%			12.00%
Amount of Realized Gain/(Loss)					$ 0		0
Amount of Unrealized Gain/(Loss)					4		0
Amount of Interest, Fees or Dividends Credited to Income					256		24
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[16]	0
Gross Additions					3,500		1,500
Gross Reductions					0		1,500
Ending balance		$ 3,500		0	3,500		0
Fair value		$ 3,500		$ 0	$ 3,500		$ 0	0	[16]	0
Investment, Identifier [Axis]: Pearl Meyer Topco LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%	12.00%		12.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					45		0
Amount of Interest, Fees or Dividends Credited to Income					986		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[16]	0
Gross Additions					17,500		0
Gross Reductions					0		0
Ending balance		$ 17,500		$ 0	17,500		0
Fair value		$ 17,500		$ 0	$ 17,500		$ 0	$ 0	[16]	0
Investment, Identifier [Axis]: Pearl Meyer Topco LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%	12.00%		12.00%	12.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(50)		(76)
Amount of Interest, Fees or Dividends Credited to Income					2,586		2,819
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					28,681		32,674
Gross Additions					50		76
Gross Reductions					1,050		4,069
Ending balance		$ 27,681		$ 28,681	27,681		28,681
Fair value		27,681		28,681	27,681		28,681	$ 28,681		32,674
Investment, Identifier [Axis]: Power System Solutions, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11]	1,234			1,234
Fair value	[11]	$ 1,234			$ 1,234
Investment, Identifier [Axis]: Power System Solutions, Secured Debt 1
Schedule of Investments [Line Items]
Spread	[11],[12],[17],[18]	6.75%			6.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17],[18]	$ (86)			$ (86)
Fair value	[11],[12],[17],[18]	$ (86)			$ (86)
Investment, Identifier [Axis]: Power System Solutions, Secured Debt 2
Schedule of Investments [Line Items]
Spread	[11],[12],[17],[18]	6.75%			6.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17],[18]	$ (86)			$ (86)
Fair value	[11],[12],[17],[18]	$ (86)			$ (86)
Investment, Identifier [Axis]: Power System Solutions, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	12.03%			12.03%
Spread	[11],[12],[17]	6.75%			6.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 18,278			$ 18,278
Fair value	[11],[12],[17]	$ 18,278			$ 18,278
Investment, Identifier [Axis]: PrimeFlight Aviation Services, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	11.87%			11.87%
Spread	[11],[12],[17]	6.85%			6.85%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 8,664			$ 8,664
Fair value	[11],[12],[17]	8,664			8,664
Investment, Identifier [Axis]: Principle Environmental, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(80)		80
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					590		710
Gross Additions					0		80
Gross Reductions					80		0
Ending balance		510		790	510		790
Fair value		510		790	510		790	590		710
Investment, Identifier [Axis]: Principle Environmental, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(1,790)		1,070
Amount of Interest, Fees or Dividends Credited to Income					572		656
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					12,420	[19]	11,160
Gross Additions					0		1,070
Gross Reductions					1,790		0
Ending balance		10,630	[20]	12,230	10,630	[20]	12,230
Fair value		$ 10,630	[20]	12,230	$ 10,630	[20]	12,230	12,420	[19]	11,160
Investment, Identifier [Axis]: Principle Environmental, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.00%			13.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance		$ 5,823			$ 5,823
Fair value		5,823			5,823
Investment, Identifier [Axis]: Principle Environmental, 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					0		104
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[16]	1,465
Gross Additions					0		9
Gross Reductions					0		1,474
Ending balance		0		0	0		0
Fair value		$ 0		$ 0	$ 0		$ 0	$ 0	[16]	1,465
Investment, Identifier [Axis]: Principle Environmental, 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		0
Amount of Interest, Fees or Dividends Credited to Income					599		602
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,806		5,808
Gross Additions					17		18
Gross Reductions					0		26
Ending balance		$ 5,823		$ 5,800	5,823		5,800
Fair value		$ 5,823		5,800	$ 5,823		5,800	$ 5,806		5,808
Investment, Identifier [Axis]: Project Eagle Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.00%	[11],[12],[17],[18]		6.00%	[11],[12],[17],[18]		6.25%	[13],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15],[16]				$ (18)
Ending balance	[11],[12],[17],[18]	$ (14)			(14)
Fair value		$ (14)	[11],[12],[17],[18]		$ (14)	[11],[12],[17],[18]		$ (18)	[13],[15],[16]
Investment, Identifier [Axis]: Project Eagle Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.43%	[11],[12],[17]		11.43%	[11],[12],[17]		10.64%	[13],[15]
Spread		6.00%	[11],[12],[17]		6.00%	[11],[12],[17]		6.25%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 29,419
Ending balance	[11],[12],[17]	$ 29,144			29,144
Fair value		29,144	[11],[12],[17]		29,144	[11],[12],[17]		$ 29,419	[13],[15]
Investment, Identifier [Axis]: Quality Lease Service, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(98)		76
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					525		2,148
Gross Additions					33		76
Gross Reductions					98		1,599
Ending balance		460		625	460		625
Fair value		460		$ 625	460		$ 625	525		2,148
Investment, Identifier [Axis]: Quality Lease Service, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Total Rate
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
Fair value		0		$ 0	0		$ 0	0		0
Investment, Identifier [Axis]: Quality Lease Service, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate				12.00%			12.00%
Amount of Realized Gain/(Loss)					(29,526)		$ (67)
Amount of Unrealized Gain/(Loss)					29,865		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					29,865		0
Gross Reductions					29,865		0
Ending balance		0		$ 0	0		0
Fair value		$ 0		0	$ 0		0	$ 0		0
Investment, Identifier [Axis]: RA Outdoors LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	12.64%			12.64%
Spread		7.00%	[11],[12],[17]		7.00%	[11],[12],[17]		6.75%	[13],[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15],[16]				$ (11)
Ending balance	[11],[12],[17]	$ 467			467
Fair value		$ 467	[11],[12],[17]		$ 467	[11],[12],[17]		$ (11)	[13],[14],[15],[16]
Investment, Identifier [Axis]: RA Outdoors LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.14%	[11],[12],[17]		12.14%	[11],[12],[17]		10.56%	[13],[14],[15]
Spread		6.75%	[11],[12],[17]		6.75%	[11],[12],[17]		6.75%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 12,094
Ending balance	[11],[12],[17]	$ 12,361			12,361
Fair value		12,361	[11],[12],[17]		12,361	[11],[12],[17]		$ 12,094	[13],[14],[15]
Investment, Identifier [Axis]: RM Bidder, LLC, Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				19
Ending balance	[11]	14			14
Fair value		14	[11]		14	[11]		19	[13]
Investment, Identifier [Axis]: RM Bidder, LLC, Warrants
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[64]				0
Ending balance	[11],[65]	0			0
Fair value		$ 0	[11],[65]		$ 0	[11],[65]		$ 0	[13],[64]
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.18%	[11],[12],[17]		13.18%	[11],[12],[17]		12.02%	[13],[14],[15],[66]
Spread		7.75%	[11],[12],[17]		7.75%	[11],[12],[17]		7.75%	[13],[14],[15],[66]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15],[66]				$ 1,258
Ending balance	[11],[12],[17]	$ 1,667			1,667
Fair value		$ 1,667	[11],[12],[17]		$ 1,667	[11],[12],[17]		$ 1,258	[13],[14],[15],[66]
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.18%	[11],[12],[17]		13.18%	[11],[12],[17]		11.49%	[13],[14],[15]
Spread		7.75%	[11],[12],[17]		7.75%	[11],[12],[17]		7.75%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 15,367
Ending balance	[11],[12],[17]	$ 13,478			13,478
Fair value		$ 13,478	[11],[12],[17]		$ 13,478	[11],[12],[17]		$ 15,367	[13],[14],[15]
Investment, Identifier [Axis]: RTIC Subsidiary Holdings, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	13.18%			13.18%
Spread	[11],[12],[17]	7.75%			7.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 540			$ 540
Fair value	[11],[12],[17]	$ 540			$ 540
Investment, Identifier [Axis]: Research Now Group, Inc. and Survey Sampling International, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.13%	[8],[12],[17]		11.13%	[8],[12],[17]		8.84%	[7],[15]
Spread		5.50%	[8],[12],[17]		5.50%	[8],[12],[17]		5.50%	[7],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]				$ 15,116
Ending balance	[8],[12],[17]	$ 14,482			14,482
Fair value		$ 14,482	[8],[12],[17]		$ 14,482	[8],[12],[17]		$ 15,116	[7],[15]
Investment, Identifier [Axis]: Richardson Sales Solutions, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	11.82%			11.82%
Spread	[11],[12],[17]	6.50%			6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 5,431			$ 5,431
Fair value	[11],[12],[17]	$ 5,431			$ 5,431
Investment, Identifier [Axis]: Richardson Sales Solutions, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	11.82%			11.82%
Spread	[11],[12],[17]	6.50%			6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 55,611			$ 55,611
Fair value	[11],[12],[17]	55,611			55,611
Investment, Identifier [Axis]: River Aggregates, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		180
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					3,620	[29]	3,280
Gross Additions					0		180
Gross Reductions					0		0
Ending balance		3,620	[30]	3,460	3,620	[30]	3,460
Fair value		3,620	[30]	3,460	3,620	[30]	3,460	3,620	[29]	3,280
Investment, Identifier [Axis]: Robbins Bros. Jewelry, Inc., Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(12,090)		4,140
Amount of Interest, Fees or Dividends Credited to Income					0		558
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					14,880		11,070
Gross Additions					0		4,140
Gross Reductions					12,090		0
Ending balance		2,790		15,210	2,790		15,210
Fair value		2,790		$ 15,210	2,790		$ 15,210	14,880		11,070
Investment, Identifier [Axis]: Robbins Bros. Jewelry, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				13.63%			13.63%
Spread				11.00%			11.00%
Amount of Realized Gain/(Loss)					0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					24		24
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					(35)	[15],[16]	(44)
Gross Additions					6		6
Gross Reductions					0		0
Ending balance		(29)	[18]	$ (38)	(29)	[18]	(38)
Fair value		$ (29)	[18]	$ (38)	$ (29)	[18]	$ (38)	$ (35)	[15],[16]	(44)
Investment, Identifier [Axis]: Robbins Bros. Jewelry, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.50%		13.63%	12.50%		13.63%	12.50%	[15]
Spread				11.00%			11.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(611)		0
Amount of Interest, Fees or Dividends Credited to Income					3,379		3,465
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					35,404	[15]	36,000
Gross Additions					61		59
Gross Reductions					1,736		450
Ending balance		$ 33,729		$ 35,609	33,729		35,609
Fair value		33,729		35,609	33,729		35,609	$ 35,404	[15]	36,000
Investment, Identifier [Axis]: Rocaceia, LLC (Quality Lease and Rental Holdings, LLC), Preferred Member Units
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Ending balance		0			0
Fair value		$ 0			0			$ 0
Investment, Identifier [Axis]: Rocaceia, LLC (Quality Lease and Rental Holdings, LLC), Secured Debt
Schedule of Investments [Line Items]
Total Rate	[22],[28],[67]							12.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[22],[28],[67]				$ 0
Fair value	[22],[28],[67]							$ 0
Investment, Identifier [Axis]: Roof Opco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[13],[14],[15]							10.97%
Spread		6.50%	[11],[12],[17],[18]		6.50%	[11],[12],[17],[18]		6.50%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 311
Ending balance	[11],[12],[17],[18]	$ 0			0
Fair value		$ 0	[11],[12],[17],[18]		$ 0	[11],[12],[17],[18]		$ 311	[13],[14],[15]
Investment, Identifier [Axis]: Roof Opco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.01%	[11],[12],[17]		12.01%	[11],[12],[17]		10.32%	[13],[14],[15]
Spread		6.50%	[11],[12],[17]		6.50%	[11],[12],[17]		6.50%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 2,333
Ending balance	[11],[12],[17]	$ 3,376			3,376
Fair value		$ 3,376	[11],[12],[17]		$ 3,376	[11],[12],[17]		$ 2,333	[13],[14],[15]
Investment, Identifier [Axis]: Roof Opco, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		14.01%	[11],[12],[17]		14.01%	[11],[12],[17]		10.32%	[13],[14],[15]
Spread		8.50%	[11],[12],[17]		8.50%	[11],[12],[17]		6.50%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 3,173
Ending balance	[11],[12],[17]	$ 3,376			3,376
Fair value		$ 3,376	[11],[12],[17]		$ 3,376	[11],[12],[17]		$ 3,173	[13],[14],[15]
Investment, Identifier [Axis]: Rug Doctor, LLC., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		13.33%	[11],[12],[17]		13.33%	[11],[12],[17]		13.02%	[13],[14],[15]
Spread		5.75%	[11],[12],[17]		5.75%	[11],[12],[17]		6.25%	[13],[14],[15]
PIK Rate		2.00%	[11],[12],[17]		2.00%	[11],[12],[17]		2.00%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 5,037
Ending balance	[11],[12],[17]	$ 5,622			5,622
Fair value		$ 5,622	[11],[12],[17]		$ 5,622	[11],[12],[17]		$ 5,037	[13],[14],[15]
Investment, Identifier [Axis]: Rug Doctor, LLC., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.33%	[11],[12],[17]		13.33%	[11],[12],[17]		13.02%	[13],[14],[15]
Spread		5.75%	[11],[12],[17]		5.75%	[11],[12],[17]		6.25%	[13],[14],[15]
PIK Rate		2.00%	[11],[12],[17]		2.00%	[11],[12],[17]		2.00%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 7,478
Ending balance	[11],[12],[17]	$ 8,115			8,115
Fair value		8,115	[11],[12],[17]		8,115	[11],[12],[17]		$ 7,478	[13],[14],[15]
Investment, Identifier [Axis]: SI East, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					3,583		3,380
Amount of Interest, Fees or Dividends Credited to Income					1,043		568
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					13,650	[19]	11,570
Gross Additions					3,890		3,380
Gross Reductions					0		0
Ending balance		17,540	[20]	14,950	17,540	[20]	14,950
Fair value		$ 17,540	[20]	$ 14,950	$ 17,540	[20]	$ 14,950	13,650	[19]	11,570
Investment, Identifier [Axis]: SI East, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.25%		10.25%	11.25%		10.25%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					18		0
Amount of Interest, Fees or Dividends Credited to Income					23		195
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[16]	2,250
Gross Additions					1,875		3,750
Gross Reductions					0		3,750
Ending balance		$ 1,875	[18]	$ 2,250	1,875	[18]	2,250
Fair value		$ 1,875	[18]	$ 2,250	$ 1,875	[18]	$ 2,250	$ 0	[16]	2,250
Investment, Identifier [Axis]: SI East, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.49%	[68]	10.25%	12.49%	[68]	10.25%	9.50%
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							6,068
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 89,786		63,600
Gross Additions							31,125
Gross Reductions							1,489
Ending balance		$ 54,536	[68]	$ 93,236	54,536	[68]	93,236
Fair value		$ 54,536	[68]	93,236	$ 54,536	[68]	93,236	$ 89,786		63,600
Investment, Identifier [Axis]: SI East, LLC, Secured Debt 2.1
Schedule of Investments [Line Items]
Total Rate		12.49%			12.49%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					255
Amount of Interest, Fees or Dividends Credited to Income					2,324
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					54,536
Gross Reductions					0
Ending balance		$ 54,536			54,536
Fair value		54,536			54,536			0
Investment, Identifier [Axis]: SI East, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(79)
Amount of Interest, Fees or Dividends Credited to Income					3,885
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					89,786
Gross Additions					0
Gross Reductions					89,786
Ending balance		0			0
Fair value		0			0			89,786
Investment, Identifier [Axis]: SIB Holdings, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				146
Ending balance	[11]	43			43
Fair value		$ 43	[11]		$ 43	[11]		$ 146	[13]
Investment, Identifier [Axis]: SIB Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.81%	[11],[12],[17]		11.81%	[11],[12],[17]		11.01%	[13],[15]
Spread		6.25%	[11],[12],[17]		6.25%	[11],[12],[17]		6.25%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 393
Ending balance	[11],[12],[17]	$ 658			658
Fair value		$ 658	[11],[12],[17]		$ 658	[11],[12],[17]		$ 393	[13],[15]
Investment, Identifier [Axis]: SIB Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.81%	[11],[12],[17]		11.81%	[11],[12],[17]		11.01%	[13],[15]
Spread		6.25%	[11],[12],[17]		6.25%	[11],[12],[17]		6.25%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 1,433
Ending balance	[11],[12],[17]	$ 1,389			1,389
Fair value		$ 1,389	[11],[12],[17]		$ 1,389	[11],[12],[17]		$ 1,433	[13],[15]
Investment, Identifier [Axis]: SIB Holdings, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.81%	[11],[12],[17]		11.81%	[11],[12],[17]		11.01%	[13],[15]
Spread		6.25%	[11],[12],[17]		6.25%	[11],[12],[17]		6.25%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 7,151
Ending balance	[11],[12],[17]	$ 5,440			5,440
Fair value		$ 5,440	[11],[12],[17]		$ 5,440	[11],[12],[17]		$ 7,151	[13],[15]
Investment, Identifier [Axis]: SIB Holdings, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	11.81%			11.81%
Spread	[11],[12],[17]	6.25%			6.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 413			$ 413
Fair value	[11],[12],[17]	$ 413			$ 413
Investment, Identifier [Axis]: SIB Holdings, LLC, Secured Debt 5
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	11.81%			11.81%
Spread	[11],[12],[17]	6.25%			6.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 1,003			$ 1,003
Fair value	[11],[12],[17]	1,003			1,003
Investment, Identifier [Axis]: SPAU Holdings, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				639
Ending balance	[11]	499			499
Fair value		$ 499	[11]		$ 499	[11]		$ 639	[13]
Investment, Identifier [Axis]: SPAU Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	13.11%			13.11%
Spread		7.50%	[11],[12],[17]		7.50%	[11],[12],[17]		7.50%	[13],[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15],[16]				$ (57)
Ending balance	[11],[12],[17]	$ 2,491			2,491
Fair value		$ 2,491	[11],[12],[17]		$ 2,491	[11],[12],[17]		$ (57)	[13],[14],[15],[16]
Investment, Identifier [Axis]: SPAU Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		13.22%	[11],[12],[17]		13.22%	[11],[12],[17]		11.06%	[13],[14],[15]
Spread		7.50%	[11],[12],[17]		7.50%	[11],[12],[17]		7.50%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 15,928
Ending balance	[11],[12],[17]	$ 15,768			15,768
Fair value		15,768	[11],[12],[17]		15,768	[11],[12],[17]		$ 15,928	[13],[14],[15]
Investment, Identifier [Axis]: Savers, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate	[7],[14],[15]							10.34%
Spread	[7],[14],[15]							5.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[14],[15]				10,938
Fair value	[7],[14],[15]							$ 10,938
Investment, Identifier [Axis]: Slick Innovations, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					460		130
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,530	[19]	1,510
Gross Additions					460		130
Gross Reductions					0		0
Ending balance		1,990	[20]	1,640	1,990	[20]	1,640
Fair value		$ 1,990	[20]	$ 1,640	$ 1,990	[20]	$ 1,640	$ 1,530	[19]	1,510
Investment, Identifier [Axis]: Slick Innovations, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		14.00%		11.00%	14.00%		11.00%	14.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(36)		(41)
Amount of Interest, Fees or Dividends Credited to Income					1,451		481
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					13,840		5,320
Gross Additions					36		41
Gross Reductions					1,716		1,121
Ending balance		$ 12,160		$ 4,240	12,160		4,240
Fair value		12,160		4,240	12,160		4,240	$ 13,840		5,320
Investment, Identifier [Axis]: Slick Innovations, LLC, Warrants
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							40
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance							400
Gross Additions							40
Gross Reductions							0
Ending balance				440			440
Fair value				440			440			400
Investment, Identifier [Axis]: Sonic Systems International, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							64
Amount of Interest, Fees or Dividends Credited to Income							32
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,280	[13]	1,070
Gross Additions							350
Gross Reductions							0
Ending balance				1,420			1,420
Fair value				$ 1,420			$ 1,420	$ 1,280	[13]	1,070
Investment, Identifier [Axis]: Sonic Systems International, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate				9.75%			9.75%	11.24%	[13],[15]
Spread				7.50%			7.50%	7.50%	[13],[15]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							102
Amount of Interest, Fees or Dividends Credited to Income							966
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					15,769	[13],[15]	11,757
Gross Additions							3,856
Gross Reductions							0
Ending balance				$ 15,613			15,613
Fair value				15,613			15,613	$ 15,769	[13],[15]	11,757
Investment, Identifier [Axis]: South Coast Terminals Holdings, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				1,316
Ending balance	[11]	1,062			1,062
Fair value		$ 1,062	[11]		$ 1,062	[11]		$ 1,316	[13]
Investment, Identifier [Axis]: South Coast Terminals Holdings, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		6.25%	[11],[12],[17],[18]		6.25%	[11],[12],[17],[18]		5.75%	[13],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15],[16]				$ (71)
Ending balance	[11],[12],[17],[18]	$ (57)			(57)
Fair value		$ (57)	[11],[12],[17],[18]		$ (57)	[11],[12],[17],[18]		$ (71)	[13],[15],[16]
Investment, Identifier [Axis]: South Coast Terminals Holdings, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.95%	[11],[12],[17]		11.95%	[11],[12],[17]		9.69%	[13],[15]
Spread		6.25%	[11],[12],[17]		6.25%	[11],[12],[17]		5.75%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 41,255
Ending balance	[11],[12],[17]	$ 34,990			34,990
Fair value		$ 34,990	[11],[12],[17]		34,990	[11],[12],[17]		$ 41,255	[13],[15]
Investment, Identifier [Axis]: Staples Canada ULC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[13],[15],[36],[53],[69]							11.83%
Spread	[13],[15],[36],[53],[69]							7.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15],[36],[53],[69]				$ 12,481
Fair value	[13],[15],[36],[53],[69]							$ 12,481
Investment, Identifier [Axis]: Stellant Systems, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate		11.07%	[8],[12],[17]		11.07%	[8],[12],[17]		10.05%	[7],[14],[15]
Spread		5.50%	[8],[12],[17]		5.50%	[8],[12],[17]		5.50%	[7],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[14],[15]				$ 7,166
Ending balance	[8],[12],[17]	$ 7,471			7,471
Fair value		7,471	[8],[12],[17]		7,471	[8],[12],[17]		$ 7,166	[7],[14],[15]
Investment, Identifier [Axis]: Student Resource Center, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					120
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				0
Gross Additions					120
Gross Reductions					0
Ending balance	[11]	120			120
Fair value		$ 120	[11]		$ 120	[11]		$ 0	[13]
Investment, Identifier [Axis]: Student Resource Center, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		8.50%	[11]		8.50%	[11]		13.27%	[13]
Spread	[13]							8.50%
PIK Rate	[11]	8.50%			8.50%
Amount of Realized Gain/(Loss)					$ (2)
Amount of Unrealized Gain/(Loss)					(114)
Amount of Interest, Fees or Dividends Credited to Income					329
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				4,556
Gross Additions					222
Gross Reductions					8
Ending balance	[11]	$ 4,770			4,770
Fair value		4,770	[11]		4,770	[11]		$ 4,556	[13]
Investment, Identifier [Axis]: Superior Rigging & Erecting Co., Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					1,440		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					1,440		0
Gross Reductions					0		0
Ending balance		5,940		4,500	5,940		4,500
Fair value		$ 5,940		$ 4,500	$ 5,940		$ 4,500	$ 4,500		4,500
Investment, Identifier [Axis]: Superior Rigging & Erecting Co., Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%	12.00%		12.00%	12.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					1,924		1,991
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					21,378		21,332
Gross Additions					38		35
Gross Reductions					1,000		0
Ending balance		$ 20,416		$ 21,367	20,416		21,367
Fair value		$ 20,416		21,367	20,416		21,367	$ 21,378		21,332
Investment, Identifier [Axis]: Tacala Investment Corp., Secured Debt
Schedule of Investments [Line Items]
Total Rate	[15],[70],[71]							7.88%
Spread	[15],[70],[71]							3.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[15],[70],[71]				$ 1,904
Fair value	[15],[70],[71]							$ 1,904
Investment, Identifier [Axis]: Team Public Choices, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		10.88%	[8],[12],[17]		10.88%	[8],[12],[17]		9.93%	[7],[15]
Spread		5.00%	[8],[12],[17]		5.00%	[8],[12],[17]		5.00%	[7],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]				$ 14,290
Ending balance	[8],[12],[17]	$ 14,629			14,629
Fair value		14,629	[8],[12],[17]		14,629	[8],[12],[17]		$ 14,290	[7],[15]
Investment, Identifier [Axis]: Tectonic Financial, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[19]				5,630
Ending balance	[20]	5,030			5,030
Fair value		5,030	[20]		5,030	[20]		5,630	[19]
Investment, Identifier [Axis]: Tedder Industries, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							(1,933)
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					7,681		8,579
Gross Additions							488
Gross Reductions							1,930
Ending balance				7,137			7,137
Fair value				$ 7,137			$ 7,137	7,681		8,579
Investment, Identifier [Axis]: Tedder Industries, LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(4,080)
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					7,681
Gross Additions					0
Gross Reductions					4,080
Ending balance		3,601			3,601
Fair value		3,601			3,601			7,681
Investment, Identifier [Axis]: Tedder Industries, LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					178
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					603
Gross Reductions					0
Ending balance		603			603
Fair value		603			603			0
Investment, Identifier [Axis]: Tedder Industries, LLC, Preferred Member Units 3
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					720
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					1,200
Gross Reductions					0
Ending balance		1,200			1,200
Fair value		$ 1,200			$ 1,200			$ 0
Investment, Identifier [Axis]: Tedder Industries, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.00%	[26]	12.00%	12.00%	[26]	12.00%	12.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(58)		0
Amount of Interest, Fees or Dividends Credited to Income					167		158
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,840		1,040
Gross Additions					0		800
Gross Reductions					58		0
Ending balance		$ 1,782	[26]	$ 1,840	1,782	[26]	1,840
Fair value		$ 1,782	[26]	$ 1,840	$ 1,782	[26]	$ 1,840	$ 1,840		1,040
Investment, Identifier [Axis]: Tedder Industries, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%	[26]	12.00%	12.00%	[26]	12.00%	12.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(404)		(71)
Amount of Interest, Fees or Dividends Credited to Income					1,392		1,431
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					15,120		15,141
Gross Additions					8		47
Gross Reductions					404		71
Ending balance		$ 14,724	[26]	$ 15,117	14,724	[26]	15,117
Fair value		14,724	[26]	15,117	14,724	[26]	15,117	$ 15,120		15,141
Investment, Identifier [Axis]: Televerde, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(309)		(2,076)
Amount of Interest, Fees or Dividends Credited to Income					592		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,408		7,280
Gross Additions					0		0
Gross Reductions					309		2,076
Ending balance		5,099	[20]	5,204	5,099	[20]	5,204
Fair value		5,099	[20]	5,204	5,099	[20]	5,204	5,408		7,280
Investment, Identifier [Axis]: Televerde, LLC, Preferred Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		1,076
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,794		0
Gross Additions					0		1,794
Gross Reductions					0		0
Ending balance		1,794		1,794	1,794		1,794
Fair value		1,794		1,794	1,794		1,794	1,794		0
Investment, Identifier [Axis]: Tex Tech Tennis, LLC, Preferred Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[29]				1,830
Ending balance	[11],[30]	2,299			2,299
Fair value		2,299	[11],[30]		2,299	[11],[30]		1,830	[13],[29]
Investment, Identifier [Axis]: The Affiliati Network, LLC, Preferred Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							0
Amount of Interest, Fees or Dividends Credited to Income							339
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					6,400	[19]	6,400
Gross Additions							0
Gross Reductions							0
Ending balance				6,400			6,400
Fair value				6,400			6,400	6,400	[19]	6,400
Investment, Identifier [Axis]: The Affiliati Network, LLC, Preferred Stock 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					107
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					6,400
Gross Additions					0
Gross Reductions					0
Ending balance	[20]	6,400			6,400
Fair value		6,400	[20]		6,400	[20]		6,400
Investment, Identifier [Axis]: The Affiliati Network, LLC, Preferred Stock 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					172
Gross Reductions					0
Ending balance		172			172
Fair value		172			172			$ 0
Investment, Identifier [Axis]: The Affiliati Network, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate								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					16		28
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					106		262
Gross Additions					1,963		3,523
Gross Reductions					2,080		3,800
Ending balance		(11)	[18]	(15)	(11)	[18]	(15)
Fair value		$ (11)	[18]	$ (15)	$ (11)	[18]	$ (15)	$ 106		262
Investment, Identifier [Axis]: The Affiliati Network, 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)					(129)		0
Amount of Interest, Fees or Dividends Credited to Income					906		1,166
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					9,442		12,834
Gross Additions					27		35
Gross Reductions					1,730		1,720
Ending balance		$ 7,739		$ 11,149	7,739		11,149
Fair value		7,739		11,149	7,739		11,149	$ 9,442		12,834
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					5,600		(1,240)
Amount of Interest, Fees or Dividends Credited to Income					87		87
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					7,800	[19]	8,660
Gross Additions					5,600		0
Gross Reductions					0		1,240
Ending balance		13,400	[20]	7,420	13,400	[20]	7,420
Fair value		13,400	[20]	$ 7,420	13,400	[20]	$ 7,420	7,800	[19]	8,660
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				8.00%			8.00%
Amount of Realized Gain/(Loss)					0		$ 0
Amount of Unrealized Gain/(Loss)					(2)		0
Amount of Interest, Fees or Dividends Credited to Income					5		5
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[16]	(8)
Gross Additions					2		3
Gross Reductions					2		0
Ending balance		0	[18]	$ (5)	0	[18]	(5)
Fair value		$ 0	[18]	$ (5)	$ 0	[18]	$ (5)	$ 0	[16]	(8)
Investment, Identifier [Axis]: Trantech Radiator Topco, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%	12.00%		12.00%	12.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(14)		(17)
Amount of Interest, Fees or Dividends Credited to Income					734		785
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					7,920		8,720
Gross Additions					14		17
Gross Reductions					14		417
Ending balance		$ 7,920		$ 8,320	7,920		8,320
Fair value		$ 7,920		8,320	7,920		8,320	$ 7,920		8,720
Investment, Identifier [Axis]: U.S. TelePacific Corp., Secured Debt
Schedule of Investments [Line Items]
Total Rate	[7],[14],[15]							11.57%
Spread	[7],[14],[15]							1.25%
PIK Rate	[7],[14],[15]							7.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[14],[15]				$ 6,859
Fair value	[7],[14],[15]							$ 6,859
Investment, Identifier [Axis]: U.S. TelePacific Corp., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[8],[12],[17],[21]	6.00%			6.00%
Spread	[8],[12],[17],[21]	1.00%			1.00%
PIK Rate	[8],[12],[17],[21]	6.00%			6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[8],[12],[17],[21]	$ 3,678			$ 3,678
Fair value	[8],[12],[17],[21]	$ 3,678			$ 3,678
Investment, Identifier [Axis]: U.S. TelePacific Corp., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[8],[12],[17],[21]	6.00%			6.00%
Spread	[8],[12],[17],[21]	1.00%			1.00%
PIK Rate	[8],[12],[17],[21]	6.00%			6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[8],[12],[17],[21]	$ 0			$ 0
Fair value	[8],[12],[17],[21]	$ 0			0
Investment, Identifier [Axis]: USA DeBusk LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[13],[15]							9.82%
Spread	[13],[15]							5.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 33,577
Fair value	[13],[15]							$ 33,577
Investment, Identifier [Axis]: USA DeBusk LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	11.42%			11.42%
Spread	[11],[12],[17]	6.00%			6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 33,322			$ 33,322
Fair value	[11],[12],[17]	$ 33,322			$ 33,322
Investment, Identifier [Axis]: USA DeBusk LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	11.92%			11.92%
Spread	[11],[12],[17]	6.50%			6.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 12,947			$ 12,947
Fair value	[11],[12],[17]	12,947			12,947
Investment, Identifier [Axis]: UniTek Global Services, 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
Fair value		$ 0	[8]	$ 0	$ 0	[8]	$ 0	$ 0	[7]	0
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 1
Schedule of Investments [Line Items]
Total Rate		20.00%	[8],[20]	20.00%	20.00%	[8],[20]	20.00%	20.00%	[7],[19]
PIK Rate		20.00%	[8],[20]	20.00%	20.00%	[8],[20]	20.00%	20.00%	[7],[19]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(341)		(280)
Amount of Interest, Fees or Dividends Credited to Income					341		280
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,833	[7],[19]	2,832
Gross Additions					341		281
Gross Reductions					341		280
Ending balance		$ 2,833	[8],[20]	$ 2,833	2,833	[8],[20]	2,833
Fair value		$ 2,833	[8],[20]	$ 2,833	$ 2,833	[8],[20]	$ 2,833	$ 2,833	[7],[19]	2,832
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 2
Schedule of Investments [Line Items]
Total Rate		20.00%	[8]	20.00%	20.00%	[8]	20.00%	20.00%	[7]
PIK Rate		20.00%	[8]	20.00%	20.00%	[8]	20.00%	20.00%	[7]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					1,986		153
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,991	[7]	1,498
Gross Additions					1,986		153
Gross Reductions					0		0
Ending balance		$ 3,977	[8]	$ 1,651	3,977	[8]	1,651
Fair value		$ 3,977	[8]	$ 1,651	$ 3,977	[8]	$ 1,651	$ 1,991	[7]	1,498
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 3
Schedule of Investments [Line Items]
Total Rate		19.00%	[8]	19.00%	19.00%	[8]	19.00%	19.00%	[7]
PIK Rate		19.00%	[8]	19.00%	19.00%	[8]	19.00%	19.00%	[7]
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
Fair value		$ 0	[8]	$ 0	$ 0	[8]	$ 0	$ 0	[7]	0
Investment, Identifier [Axis]: UniTek Global Services, Inc., Preferred Stock 4
Schedule of Investments [Line Items]
Total Rate		13.50%	[8]	13.50%	13.50%	[8]	13.50%	13.50%	[7]
PIK Rate		13.50%	[8]	13.50%	13.50%	[8]	13.50%	13.50%	[7]
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
Fair value		$ 0	[8]	$ 0	0	[8]	$ 0	$ 0	[7]	0
Investment, Identifier [Axis]: UniTek Global Services, Inc., Secured Convertible Debt
Schedule of Investments [Line Items]
Total Rate				15.00%			15.00%	15.00%	[7]
PIK Rate				15.00%			15.00%	15.00%	[7]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							782
Amount of Interest, Fees or Dividends Credited to Income							167
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 4,592	[7]	2,375
Gross Additions							1,896
Gross Reductions							0
Ending balance				$ 4,271			4,271
Fair value				$ 4,271			$ 4,271	$ 4,592	[7]	2,375
Investment, Identifier [Axis]: UniTek Global Services, Inc., Secured Convertible Debt 1
Schedule of Investments [Line Items]
Total Rate	[8]	15.00%			15.00%
PIK Rate	[8]	15.00%			15.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					206
Amount of Interest, Fees or Dividends Credited to Income					248
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					4,592
Gross Additions					0
Gross Reductions					548
Ending balance	[8]	$ 4,044			4,044
Fair value		$ 4,044	[8]		$ 4,044	[8]		4,592
Investment, Identifier [Axis]: UniTek Global Services, Inc., Secured Convertible Debt 2
Schedule of Investments [Line Items]
Total Rate	[8]	15.00%			15.00%
PIK Rate	[8]	15.00%			15.00%
Amount of Realized Gain/(Loss)					$ (223)
Amount of Unrealized Gain/(Loss)					1,174
Amount of Interest, Fees or Dividends Credited to Income					30
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					2,206
Gross Reductions					223
Ending balance	[8]	$ 1,983			1,983
Fair value		$ 1,983	[8]		$ 1,983	[8]		$ 0
Investment, Identifier [Axis]: UniTek Global Services, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				10.76%			10.76%	10.76%	[7],[14],[15]
Spread		7.50%		5.50%	7.50%		5.50%	5.50%	[7],[14],[15]
PIK Rate				2.00%			2.00%	2.00%	[7],[14],[15]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					22		3
Amount of Interest, Fees or Dividends Credited to Income					(2)		29
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					382	[7],[14],[15]	371
Gross Additions					25		9
Gross Reductions					407		0
Ending balance		$ 0		$ 380	0		380
Fair value		$ 0		$ 380	$ 0		$ 380	$ 382	[7],[14],[15]	371
Investment, Identifier [Axis]: UniTek Global Services, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate				10.76%			10.76%	10.76%	[7],[14],[15]
Spread		7.50%		5.50%	7.50%		5.50%	5.50%	[7],[14],[15]
PIK Rate				2.00%			2.00%	2.00%	[7],[14],[15]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					96		26
Amount of Interest, Fees or Dividends Credited to Income					282		146
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					1,712	[7],[14],[15]	1,852
Gross Additions					112		61
Gross Reductions					1,824		212
Ending balance		$ 0		$ 1,701	0		1,701
Fair value		0		1,701	0		1,701	$ 1,712	[7],[14],[15]	1,852
Investment, Identifier [Axis]: UnionRock Energy Fund II, LP, LP Interests
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(964)		(64)
Amount of Interest, Fees or Dividends Credited to Income					25		194
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					5,855	[19],[35],[36],[37]	6,123
Gross Additions					531		1,880
Gross Reductions					1,251		2,649
Ending balance		5,135	[20],[33],[38],[39]	5,354	5,135	[20],[33],[38],[39]	5,354
Fair value		5,135	[20],[33],[38],[39]	5,354	5,135	[20],[33],[38],[39]	5,354	5,855	[19],[35],[36],[37]	6,123
Investment, Identifier [Axis]: UnionRock Energy Fund III, LP, LP Interests
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					1,051
Gross Reductions					0
Ending balance	[33],[38],[39]	1,051			1,051
Fair value		1,051	[33],[38],[39]		1,051	[33],[38],[39]		0
Investment, Identifier [Axis]: Universal Wellhead Services Holdings, LLC, Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[29]				0
Gross Additions					0
Gross Reductions					0
Ending balance	[11],[30]	0			0
Fair value		$ 0	[11],[30]		$ 0	[11],[30]		$ 0	[13],[29]
Investment, Identifier [Axis]: Universal Wellhead Services Holdings, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Total Rate		14.00%	[11],[30]		14.00%	[11],[30]		14.00%	[13],[29]
PIK Rate		14.00%	[11],[30]		14.00%	[11],[30]		14.00%	[13],[29]
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[29]				220
Gross Additions					0
Gross Reductions					0
Ending balance	[11],[30]	$ 220			220
Fair value		$ 220	[11],[30]		$ 220	[11],[30]		$ 220	[13],[29]
Investment, Identifier [Axis]: UserZoom Technologies, Inc., Secured Debt
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	12.42%			12.42%
Spread	[11],[12],[17]	7.50%			7.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 4,000			$ 4,000
Fair value	[11],[12],[17]	4,000			4,000
Investment, Identifier [Axis]: VORTEQ Coil Finishers, LLC, Common Equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[19]				3,930
Ending balance	[11],[20]	2,969			2,969
Fair value		2,969	[11],[20]		2,969	[11],[20]		3,930	[13],[19]
Investment, Identifier [Axis]: VVS Holdco LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(100)		240
Amount of Interest, Fees or Dividends Credited to Income					215		300
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					11,940	[19],[29]	11,840
Gross Additions					0		238
Gross Reductions					100		0
Ending balance		11,840	[20],[30]	12,078	11,840	[20],[30]	12,078
Fair value		$ 11,840	[20],[30]	$ 12,078	$ 11,840	[20],[30]	$ 12,078	$ 11,940	[19],[29]	11,840
Investment, Identifier [Axis]: VVS Holdco LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate				8.63%			8.63%
Spread		6.00%	[12],[17],[18]	6.00%	6.00%	[12],[17],[18]	6.00%	6.00%	[15],[16],[29]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					23		45
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					(21)	[15],[16],[29]	1,169
Gross Additions					17		805
Gross Reductions					0		1,201
Ending balance		$ (4)	[12],[17],[18]	$ 773	(4)	[12],[17],[18]	773
Fair value		$ (4)	[12],[17],[18]	$ 773	$ (4)	[12],[17],[18]	$ 773	$ (21)	[15],[16],[29]	1,169
Investment, Identifier [Axis]: VVS Holdco LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.50%		11.50%	11.50%		11.50%	11.50%	[29]
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					2,625		2,697
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					30,161	[29]	30,100
Gross Additions					60		46
Gross Reductions					2,200		0
Ending balance		$ 28,021		$ 30,146	28,021		30,146
Fair value		$ 28,021		30,146	$ 28,021		30,146	$ 30,161	[29]	30,100
Investment, Identifier [Axis]: Veregy Consolidated, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		5.25%	[8],[12],[17],[18]		5.25%	[8],[12],[17],[18]		5.25%	[7],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15],[16]				$ (630)
Ending balance	[8],[12],[17],[18]	$ (463)			(463)
Fair value		$ (463)	[8],[12],[17],[18]		$ (463)	[8],[12],[17],[18]		$ (630)	[7],[15],[16]
Investment, Identifier [Axis]: Veregy Consolidated, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.63%	[8],[12],[17]		11.63%	[8],[12],[17]		10.41%	[7],[15]
Spread		6.00%	[8],[12],[17]		6.00%	[8],[12],[17]		6.00%	[7],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]				$ 15,479
Ending balance	[8],[12],[17]	$ 15,603			15,603
Fair value		15,603	[8],[12],[17]		15,603	[8],[12],[17]		$ 15,479	[7],[15]
Investment, Identifier [Axis]: Vida Capital, Inc, Secured Debt
Schedule of Investments [Line Items]
Total Rate	[7]							10.38%
Spread	[7]							6.00%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7]				12,049
Fair value	[7]							$ 12,049
Investment, Identifier [Axis]: Vision Interests, Inc., Series A Preferred Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					168		144
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					3,000	[19]	3,000
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		3,000	[20]	3,000	3,000	[20]	3,000
Fair value		3,000	[20]	3,000	3,000	[20]	3,000	3,000	[19]	3,000
Investment, Identifier [Axis]: Vistar Media, Inc., Preferred Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				2,250
Ending balance	[11]	2,339			2,339
Fair value		2,339	[11]		2,339	[11]		2,250	[13]
Investment, Identifier [Axis]: Volusion, LLC, Common Stock
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(2,576)
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					2,576
Gross Reductions					2,576
Ending balance		0			0
Fair value		0			0			0
Investment, Identifier [Axis]: Volusion, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)							0
Amount of Unrealized Gain/(Loss)							(5,989)
Amount of Interest, Fees or Dividends Credited to Income							0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0		5,990
Gross Additions							0
Gross Reductions							5,990
Ending balance				0			0
Fair value				$ 0			$ 0	0		5,990
Investment, Identifier [Axis]: Volusion, LLC, Preferred Member Units 1
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					0
Gross Reductions					0
Ending balance		0			0
Fair value		0			0			0
Investment, Identifier [Axis]: Volusion, LLC, Preferred Member Units 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					(1,396)
Amount of Interest, Fees or Dividends Credited to Income					0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					11,446
Gross Reductions					2,096
Ending balance		9,350			9,350
Fair value		9,350			9,350			0
Investment, Identifier [Axis]: Volusion, LLC, Preferred Member Units 3
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
Fair value		$ 0			$ 0			$ 0
Investment, Identifier [Axis]: Volusion, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		10.00%		11.50%	10.00%		11.50%	11.50%	[28]
Amount of Realized Gain/(Loss)							$ 0
Amount of Unrealized Gain/(Loss)							(104)
Amount of Interest, Fees or Dividends Credited to Income							1,490
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					$ 14,914	[28]	17,434
Gross Additions							0
Gross Reductions							804
Ending balance		$ 2,100		$ 16,630	2,100		16,630
Fair value		$ 2,100		$ 16,630	$ 2,100		$ 16,630	$ 14,914	[28]	17,434
Investment, Identifier [Axis]: Volusion, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		10.00%			10.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					107
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0
Gross Additions					2,100
Gross Reductions					0
Ending balance		$ 2,100			2,100
Fair value		2,100			2,100			0
Investment, Identifier [Axis]: Volusion, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					(3,188)
Amount of Unrealized Gain/(Loss)					1,821
Amount of Interest, Fees or Dividends Credited to Income					166
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					14,914
Gross Additions					0
Gross Reductions					14,914
Ending balance		0			0
Fair value		0			0			$ 14,914
Investment, Identifier [Axis]: Volusion, LLC, Unsecured Convertible Debt
Schedule of Investments [Line Items]
Total Rate				8.00%			8.00%	8.00%
Amount of Realized Gain/(Loss)					(409)		$ 0
Amount of Unrealized Gain/(Loss)					409		0
Amount of Interest, Fees or Dividends Credited to Income					0		24
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0		409
Gross Additions					409		0
Gross Reductions					409		0
Ending balance		0		$ 409	0		409
Fair value		0		409	0		409	$ 0		409
Investment, Identifier [Axis]: Volusion, LLC, Warrants
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					2,576		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		0	0		0
Fair value		0		0	0		0	$ 0	[9]	0
Investment, Identifier [Axis]: Wahoo Fitness Acquisition L.L.C., Secured Debt
Schedule of Investments [Line Items]
Total Rate	[7],[14],[15]							10.64%
Spread	[7],[14],[15]							5.75%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[14],[15]				8,409
Fair value	[7],[14],[15]							$ 8,409
Investment, Identifier [Axis]: Wall Street Prep, Inc., Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				420
Ending balance	[11]	469			469
Fair value		$ 469	[11]		$ 469	[11]		$ 420	[13]
Investment, Identifier [Axis]: Wall Street Prep, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.00%	[11],[12],[17],[18]		7.00%	[11],[12],[17],[18]		7.00%	[13],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15],[16]				$ (6)
Ending balance	[11],[12],[17],[18]	$ (4)			(4)
Fair value		$ (4)	[11],[12],[17],[18]		$ (4)	[11],[12],[17],[18]		$ (6)	[13],[15],[16]
Investment, Identifier [Axis]: Wall Street Prep, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.40%	[11],[12],[17]		12.40%	[11],[12],[17]		10.74%	[13],[15]
Spread		7.00%	[11],[12],[17]		7.00%	[11],[12],[17]		7.00%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 4,146
Ending balance	[11],[12],[17]	$ 3,723			3,723
Fair value		$ 3,723	[11],[12],[17]		$ 3,723	[11],[12],[17]		$ 4,146	[13],[15]
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		11.79%	[11],[12],[17],[72]		11.79%	[11],[12],[17],[72]		10.73%	[13],[15]
Spread		6.25%	[11],[12],[17],[72]		6.25%	[11],[12],[17],[72]		6.00%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 370
Ending balance	[11],[12],[17],[72]	$ 2,223			2,223
Fair value		$ 2,223	[11],[12],[17],[72]		$ 2,223	[11],[12],[17],[72]		$ 370	[13],[15]
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.79%	[11],[12],[17]		11.79%	[11],[12],[17]		10.73%	[13],[15]
Spread		6.25%	[11],[12],[17]		6.25%	[11],[12],[17]		6.00%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 391
Ending balance	[11],[12],[17]	$ 388			388
Fair value		$ 388	[11],[12],[17]		$ 388	[11],[12],[17]		$ 391	[13],[15]
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		11.79%	[11],[12],[17]		11.79%	[11],[12],[17]		10.73%	[13],[15]
Spread		6.25%	[11],[12],[17]		6.25%	[11],[12],[17]		6.00%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 28,947
Ending balance	[11],[12],[17]	$ 15,967			15,967
Fair value		$ 15,967	[11],[12],[17]		$ 15,967	[11],[12],[17]		$ 28,947	[13],[15]
Investment, Identifier [Axis]: Watterson Brands, LLC, Secured Debt 4
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	11.79%			11.79%
Spread	[11],[12],[17]	6.25%			6.25%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending balance	[11],[12],[17]	$ 12,771			$ 12,771
Fair value	[11],[12],[17]	12,771			12,771
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC, Common Stock
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				1,950
Ending balance	[11]	2,759			2,759
Fair value		$ 2,759	[11]		$ 2,759	[11]		$ 1,950	[13]
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	11.39%			11.39%
Spread		6.00%	[11],[12],[17]		6.00%	[11],[12],[17]		6.00%	[13],[14],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15],[16]				$ (20)
Ending balance	[11],[12],[17]	$ 1,205			1,205
Fair value		$ 1,205	[11],[12],[17]		$ 1,205	[11],[12],[17]		$ (20)	[13],[14],[15],[16]
Investment, Identifier [Axis]: West Star Aviation Acquisition, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		11.35%	[11],[12],[17]		11.35%	[11],[12],[17]		8.59%	[13],[14],[15]
Spread		6.00%	[11],[12],[17]		6.00%	[11],[12],[17]		6.00%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 10,685
Ending balance	[11],[12],[17]	$ 10,685			10,685
Fair value		$ 10,685	[11],[12],[17]		$ 10,685	[11],[12],[17]		$ 10,685	[13],[14],[15]
Investment, Identifier [Axis]: Winter Services LLC, Secured Debt 1
Schedule of Investments [Line Items]
Spread		7.00%	[11],[12],[17],[18]		7.00%	[11],[12],[17],[18]		7.00%	[13],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15],[16]				$ 0
Ending balance	[11],[12],[17],[18]	$ 0			0
Fair value		$ 0	[11],[12],[17],[18]		$ 0	[11],[12],[17],[18]		$ 0	[13],[15],[16]
Investment, Identifier [Axis]: Winter Services LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate	[11],[12],[17]	12.51%			12.51%
Spread		7.00%	[11],[12],[17]		7.00%	[11],[12],[17]		7.00%	[13],[15],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15],[16]				$ (17)
Ending balance	[11],[12],[17]	$ 2,067			2,067
Fair value		$ 2,067	[11],[12],[17]		$ 2,067	[11],[12],[17]		$ (17)	[13],[15],[16]
Investment, Identifier [Axis]: Winter Services LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		12.51%	[11],[12],[17]		12.51%	[11],[12],[17]		10.74%	[13],[15]
Spread		7.00%	[11],[12],[17]		7.00%	[11],[12],[17]		7.00%	[13],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[15]				$ 9,992
Ending balance	[11],[12],[17]	$ 9,300			9,300
Fair value		9,300	[11],[12],[17]		9,300	[11],[12],[17]		$ 9,992	[13],[15]
Investment, Identifier [Axis]: World Micro Holdings, LLC, Preferred Equity
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					226
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					3,845
Gross Additions					0
Gross Reductions					0
Ending balance	[20]	3,845			3,845
Fair value		$ 3,845	[20]		$ 3,845	[20]		$ 3,845
Investment, Identifier [Axis]: World Micro Holdings, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		13.00%			13.00%			13.00%
Amount of Realized Gain/(Loss)					$ 0
Amount of Unrealized Gain/(Loss)					0
Amount of Interest, Fees or Dividends Credited to Income					1,440
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					14,140
Gross Additions					29
Gross Reductions					879
Ending balance		$ 13,290			13,290
Fair value		$ 13,290			$ 13,290			$ 14,140
Investment, Identifier [Axis]: Xenon Arc, Inc., Secured Debt 1
Schedule of Investments [Line Items]
Total Rate	[11],[17]	10.68%			10.68%
Spread		5.25%	[11],[17]		5.25%	[11],[17]		5.25%	[13],[16]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[16]				$ (218)
Ending balance	[11],[17]	$ 4,032			4,032
Fair value		$ 4,032	[11],[17]		$ 4,032	[11],[17]		$ (218)	[13],[16]
Investment, Identifier [Axis]: Xenon Arc, Inc., Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		10.76%	[11],[17]		10.76%	[11],[17]		10.84%	[13]
Spread		5.25%	[11],[17]		5.25%	[11],[17]		5.25%	[13]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				$ 24,135
Ending balance	[11],[17]	$ 24,118			24,118
Fair value		$ 24,118	[11],[17]		$ 24,118	[11],[17]		$ 24,135	[13]
Investment, Identifier [Axis]: Xenon Arc, Inc., Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		10.66%	[11],[17]		10.66%	[11],[17]		8.63%	[13]
Spread		5.25%	[11],[17]		5.25%	[11],[17]		5.25%	[13]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13]				$ 38,051
Ending balance	[11],[17]	$ 37,925			37,925
Fair value		$ 37,925	[11],[17]		$ 37,925	[11],[17]		$ 38,051	[13]
Investment, Identifier [Axis]: YS Garments, LLC, Secured Debt
Schedule of Investments [Line Items]
Total Rate		12.93%	[8],[12],[17]		12.93%	[8],[12],[17]		9.51%	[7],[15]
Spread		7.50%	[8],[12],[17]		7.50%	[8],[12],[17]		5.50%	[7],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[7],[15]				$ 12,127
Ending balance	[8],[12],[17]	$ 10,257			10,257
Fair value		10,257	[8],[12],[17]		10,257	[8],[12],[17]		$ 12,127	[7],[15]
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC, Preferred Member Units
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					(240)		(940)
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					240		2,130
Gross Additions					0		0
Gross Reductions					240		940
Ending balance		0		1,190	0		1,190
Fair value		$ 0		$ 1,190	$ 0		$ 1,190	$ 240		2,130
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.00%		12.00%	12.00%		12.00%	12.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					41		57
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					450		625
Gross Additions					0		0
Gross Reductions					0		175
Ending balance		$ 450		$ 450	450		450
Fair value		$ 450		$ 450	$ 450		$ 450	$ 450		625
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		6.50%		6.50%	6.50%		6.50%	6.50%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					49		49
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					945		1,000
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		$ 945		$ 1,000	945		1,000
Fair value		$ 945		$ 1,000	$ 945		$ 1,000	$ 945		1,000
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC, Secured Debt 3
Schedule of Investments [Line Items]
Total Rate		14.00%		14.00%	14.00%		14.00%	14.00%
Amount of Realized Gain/(Loss)					$ 0		$ 0
Amount of Unrealized Gain/(Loss)					(304)		(74)
Amount of Interest, Fees or Dividends Credited to Income					292		292
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					2,676		2,750
Gross Additions					0		0
Gross Reductions					304		74
Ending balance		$ 2,372		$ 2,676	2,372		2,676
Fair value		2,372		2,676	2,372		2,676	$ 2,676		2,750
Investment, Identifier [Axis]: Ziegler’s NYPD, LLC, Warrants
Schedule of Investments [Line Items]
Amount of Realized Gain/(Loss)					0		0
Amount of Unrealized Gain/(Loss)					0		0
Amount of Interest, Fees or Dividends Credited to Income					0		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance					0	[9]	0
Gross Additions					0		0
Gross Reductions					0		0
Ending balance		0	[10]	0	0	[10]	0
Fair value		$ 0	[10]	$ 0	$ 0	[10]	$ 0	$ 0	[9]	$ 0
Investment, Identifier [Axis]: Zips Car Wash, LLC, Secured Debt 1
Schedule of Investments [Line Items]
Total Rate		12.67%	[11],[12],[17],[73]		12.67%	[11],[12],[17],[73]		11.67%	[13],[14],[15]
Spread		7.25%	[11],[12],[17],[73]		7.25%	[11],[12],[17],[73]		7.25%	[13],[14],[15]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15]				$ 17,512
Ending balance	[11],[12],[17],[73]	$ 16,199			16,199
Fair value		$ 16,199	[11],[12],[17],[73]		$ 16,199	[11],[12],[17],[73]		$ 17,512	[13],[14],[15]
Investment, Identifier [Axis]: Zips Car Wash, LLC, Secured Debt 2
Schedule of Investments [Line Items]
Total Rate		12.68%	[11],[12],[17],[73]		12.68%	[11],[12],[17],[73]		11.67%	[13],[14],[15],[71]
Spread		7.25%	[11],[12],[17],[73]		7.25%	[11],[12],[17],[73]		7.25%	[13],[14],[15],[71]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning balance	[13],[14],[15],[71]				$ 4,379
Ending balance	[11],[12],[17],[73]	$ 4,060			4,060
Fair value		$ 4,060	[11],[12],[17],[73]		$ 4,060	[11],[12],[17],[73]		$ 4,379	[13],[14],[15],[71]
[1] Investment fair value was determined using significant unobservable inputs, unless otherwise noted. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for further discussion. Negative fair value is the result of the capitalized discount on the loan or the unfunded commitment being valued below par. [2] Investment fair value was determined using significant unobservable inputs, unless otherwise noted. See Note C—Fair Value Hierarchy for Investments—Portfolio Composition for further discussion. Negative fair value is the result of the capitalized discount on the loan or the unfunded commitment being valued below par. [3] Control investments are defined by the 1940 Act as investments in which more than 25% of the voting securities are owned or where the ability to nominate greater than 50% of the board representation is maintained. [4] Control investments are defined by the 1940 Act as investments in which more than 25% of the voting securities are owned or where the ability to nominate greater than 50% of the board representation is maintained [5] Affiliate investments are defined by the 1940 Act as investments in which between 5% and 25% (inclusive) of the voting securities are owned and the investments are not classified as Control investments. [6] Affiliate investments are defined by the 1940 Act as investments in which between 5% and 25% (inclusive) of the voting securities are owned and the investments are not classified as Control investments. [7] Middle Market portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Middle Market portfolio investments. [8] Middle Market portfolio investment. See Note C—Fair Value Hierarchy for Investments—Portfolio Composition for a description of Middle Market portfolio investments. [9] Warrants are presented in equivalent shares/units with a strike price of $0.01 per share/unit. [10] Warrants are presented in equivalent shares/units with a strike price of $0.01 per share/unit. [11] Private Loan portfolio investment. See Note C—Fair Value Hierarchy for Investments—Portfolio Composition for a description of Private Loan portfolio investments. [12] Index based floating interest rate is subject to contractual minimum interest rate. As noted in this schedule, 91% of the loans (based on the par amount) contain LIBOR or Term SOFR (“SOFR”) floors which range between 0.50% and 2.00%, with a weighted-average floor of 1.13%. [13] Private Loan portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Private Loan portfolio investments. [14] A majority of the variable rate loans in the Company’s Investment Portfolio bear interest at a rate that may be determined by reference to either LIBOR (“L”), SOFR (“SF”) or an alternate Base rate (commonly based on the Federal Funds Rate or the Prime rate (“P”)), which typically resets every one, three, or six months at the borrower’s option. SOFR based contracts may include a credit spread adjustment (the “Adjustment”) that is charged in addition to the stated spread. The Adjustment is applied when the SOFR rate, plus the Adjustment, exceeds the stated floor rate, as applicable. As of December 31, 2022, SOFR based contracts in the portfolio had Adjustments ranging from 0.10% to 0.35%. [15] Index based floating interest rate is subject to contractual minimum interest rate. As noted in this schedule, 66% of these floating rate loans (based on the par amount) contain LIBOR or Term SOFR (“SOFR”) floors which range between 0.50% and 2.00%, with a weighted-average floor of 1.04%. [16] The position is unfunded and no interest income is being earned as of December 31, 2022. The position may earn a nominal unused facility fee on committed amounts. [17] A majority of the variable rate loans in the Company’s investment portfolio bear interest at a rate that may be determined by reference to either LIBOR (“L”), SOFR (“SF”) or an alternate Base Rate (commonly based on the Federal Funds Rate or the Prime Rate (“P”)), which typically resets every one, three, or six months at the borrower’s option. SOFR based contracts may include a credit spread adjustment (the “Adjustment”) that is charged in addition to the stated spread. The Adjustment is applied when the SOFR rate, plus the Adjustment, exceeds the stated floor rate, as applicable. As of September 30, 2023, SOFR based contracts in the portfolio had Adjustments ranging from 0.10% to 0.43%. [18] The position is unfunded and no interest income is being earned as of September 30, 2023. The position may earn a nominal unused facility fee on committed amounts. [19] Income producing through dividends or distributions. [20] Income producing through dividends or distributions. [21] Non-accrual and non-income producing debt investment. [22] Non-accrual and non-income producing debt investment. [23] Warrants are presented in equivalent shares/units with a strike price of $1.00 per share/unit. [24] Index based floating interest rate is subject to contractual maximum base rate of 3.00%. [25] Index based floating interest rate is subject to contractual maximum base rate of 2.50%. [26] Maturity date is under on-going negotiations with the portfolio company and other lenders, if applicable. [27] The Company has entered into an intercreditor agreement that entitles the Company to the “last out” tranche of the first lien secured loans, whereby the “first out” tranche will receive priority as to the “last out” tranche with respect to payments of principal, interest, and any other amounts due thereunder. Therefore, the Company receives a higher interest rate than the contractual stated interest rate of SOFR+6.00% (Floor 1.00%) per the credit agreement and the Consolidated Schedule of Investments above reflects such higher rate. [28] Maturity date is under on-going negotiations with the portfolio company and other lenders, if applicable. [29] Shares/Units represent ownership in a related Real Estate or HoldCo entity. [30] Shares/Units represent ownership in a related Real Estate or HoldCo entity. [31] The Company has entered into an intercreditor agreement that entitles the Company to the “last out” tranche of the first lien secured loans, whereby the “first out” tranche will receive priority as to the “last out” tranche with respect to payments of principal, interest, and any other amounts due thereunder. Therefore, the Company receives a higher interest rate than the contractual stated interest rate of SOFR+6.25% (Floor 1.00%) per the credit agreement and the Consolidated Schedule of Investments above reflects such higher rate. [32] The Company has entered into an intercreditor agreement that entitles the Company to the “last out” tranche of the first lien secured loans, whereby the “first out” tranche will receive priority as to the “last out” tranche with respect to payments of principal, interest, and any other amounts due thereunder. Therefore, the Company receives a higher interest rate than the contractual stated interest rate of SOFR+8.00% (Floor 1.50%) per the credit agreement and the Consolidated Schedule of Investments above reflects such higher rate. [33] Investment is not a qualifying asset as defined under Section 55(a) of the 1940 Act. Qualifying assets must represent at least 70% of total assets at the time of acquisition of any additional non-qualifying assets. [34] Portfolio company headquarters are located outside of the United States. [35] Other Portfolio investment. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of Other Portfolio investments. [36] Investment is not a qualifying asset as defined under Section 55(a) of the 1940 Act. Qualifying assets must represent at least 70% of total assets at the time of acquisition of any additional non-qualifying assets. [37] Investment is not unitized. Presentation is made in percent of fully diluted ownership unless otherwise indicated. [38] Other Portfolio investment. See Note C—Fair Value Hierarchy for Investments—Portfolio Composition for a description of Other Portfolio investments. [39] Investment is not unitized. Presentation is made in percent of fully diluted ownership unless otherwise indicated. [40] The security has an effective contractual interest rate of 2.00% PIK + LIBOR+6.50%, Floor 1.00%, but the issuer may, in its discretion, elect to pay the PIK interest in cash. The rate presented represents the effective current yield based on actual payments received during the period. [41] As of September 30, 2023, borrowings under the loan facility bore interest at SOFR+7.00% (Floor 2.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of September 30, 2023. [42] As of December 31, 2022, borrowings under the loan facility bore interest at SOFR+6.25% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022. [43] As of December 31, 2022, borrowings under the loan facility bore interest at SOFR+6.25% (Floor 1.00%). Due to an amendment and subsequent funding during the quarter, the term loan facility has different floating rate reset dates. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022. [44] As of September 30, 2023, borrowings under the loan facility bore interest at LIBOR+8.00% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of September 30, 2023. [45] As of December 31, 2022, borrowings under the loan facility bore interest at LIBOR+8.00% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022. [46] As of September 30, 2023, borrowings under the loan facility bore interest at SOFR+8.50% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of September 30, 2023. [47] Effective yield as of September 30, 2023 was approximately 4.96% on the Dreyfus Government Cash Management. [48] As of December 31, 2022, borrowings under the loan facility bore interest at SOFR+8.00% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022. [49] Effective yield as of September 30, 2023 was approximately 4.98% on the Fidelity Treasury. [50] As of September 30, 2023, borrowings under the loan facility bore interest at SOFR+6.50% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of September 30, 2023. [51] Index based floating interest rate is subject to contractual maximum base rate of 2.00%. [52] Index based floating interest rate is subject to contractual maximum base rate of 1.50%. [53] Portfolio company headquarters are located outside of the United States. [54] As of December 31, 2022, borrowings under the loan facility bore interest at SOFR+5.75% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022. [55] As of December 31, 2022, borrowings under the loan facility bore interest at LIBOR+6.50% PIK or Prime+5.50% PIK. Revolving facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022. [56] Warrants are presented in equivalent shares/units with a strike price of $1.00 per share/unit. [57] As of September 30, 2023, borrowings under the loan facility bore interest at SOFR+6.75% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of September 30, 2023. [58] As of September 30, 2023, borrowings under the loan facility bore interest at SOFR+10.00%. RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of September 30, 2023. [59] As of December 31, 2022, borrowings under the loan facility bore interest at LIBOR+10.00%. RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022. [60] External Investment Manager. Investment is not encumbered as security for the Company’s Credit Facilities or in support of the SBA-guaranteed debentures issued by the Funds. [61] As of December 31, 2022, borrowings under the loan facility bore interest at LIBOR+7.25% (Floor 0.75%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022. [62] As of September 30, 2023, borrowings under the loan facility have multiple contracts that bear interest at either SOFR+7.75% or PRIME+6.75% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents the base rate applicable to the majority of the facility and the weighted-average rate for borrowings under the facility, as of September 30, 2023. [63] As of December 31, 2022, borrowings under the loan facility bore interest at SOFR+5.75% (Floor 1.00%). Delayed draw term loan facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022. [64] Warrants are presented in equivalent units with a strike price of $14.28 per unit. [65] Warrants are presented in equivalent units with a strike price of $14.28 per unit. [66] As of December 31, 2022, borrowings under the loan facility bore interest at SOFR+7.75% (Floor 1.25%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022. [67] Portfolio company is in a bankruptcy process and, as such, the maturity date of our debt investment in this portfolio company will not be finally determined until such process is complete. As noted in footnote (14), our debt investment in this portfolio company is on non-accrual status. [68] The Company has entered into an intercreditor agreement that entitles the Company to the “last out” tranche of the first lien secured loans, whereby the “first out” tranche will receive priority as to the “last out” tranche with respect to payments of principal, interest, and any other amounts due thereunder. Therefore, the Company receives a higher interest rate than the contractual stated interest rate of 11.25% per the credit agreement and the Consolidated Schedule of Investments above reflects such higher rate. [69] In connection with the Company’s debt investment in Staples Canada ULC and in an attempt to mitigate any potential adverse change in foreign exchange rates during the term of the Company’s investment, the Company maintains a forward foreign currency contract with Cadence Bank to lend $16.9 million Canadian Dollars and receive $13.1 million U.S. Dollars with a settlement date of September 14, 2023. The unrealized appreciation on the forward foreign currency contract was $0.6 million as of December 31, 2022. [70] Short-term portfolio investments. See Note C — Fair Value Hierarchy for Investments — Portfolio Composition for a description of short-term portfolio investments. [71] As of December 31, 2022, borrowings under the loan facility bore interest at SOFR+7.25% (Floor 1.00%). Each new draw on the delayed draw term loan facility has a different floating rate reset date. The rate presented represents a weighted-average rate for borrowings under the facility, as of December 31, 2022. [72] As of September 30, 2023, borrowings under the loan facility bore interest at SOFR+6.25% (Floor 1.00%). RLOC facility permits the borrower to make an interest rate election regarding the base rate on each draw under the facility. The rate presented represents a weighted-average rate for borrowings under the facility, as of September 30, 2023. [73] As of September 30, 2023, borrowings under the loan facility bear interest at SOFR+7.25% (Floor 1.00%). Each new draw or funding on the facility has a different floating rate reset date. The rate presented represents a weighted-average rate for borrowings under the facility, as of September 30, 2023.