INVESTMENTS IN AND ADVANCES TO AFFILIATES (Details)

v3.23.3

INVESTMENTS IN AND ADVANCES TO AFFILIATES (Details) - USD ($)		12 Months Ended
		Sep. 30, 2023		Sep. 30, 2022		Sep. 30, 2021
Investments in and Advances to Affiliates, Activity [Line Items]
Investment owned, percent of net assets		172.50%	[1],[2],[3],[4],[5]	205.90%	[6],[7],[8],[9],[10]
Net Realized Gain (Loss) for Period		$ 12,664,000		$ 5,173,000		$ 3,180,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[9]	649,615,000
Ending Balance		704,815,000	[4]	649,615,000	[9]
Diversified/Conglomerate Manufacturing
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		114,105,000
Ending Balance		158,061,000		114,105,000
Diversified/Conglomerate Service
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		148,907,000
Ending Balance		135,060,000		148,907,000
Automobile
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		20,144,000
Ending Balance		27,571,000		20,144,000
Machinery
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		9,562,000
Ending Balance		6,411,000		9,562,000
Secured first lien debt
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		463,858,000
Ending Balance		510,701,000		463,858,000
Secured second lien debt
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		115,928,000
Ending Balance		127,854,000		115,928,000
Unsecured debt
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		55,000
Ending Balance		24,000		55,000
Preferred equity
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		27,046,000
Ending Balance		26,855,000		27,046,000
Common equity/equivalents
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		42,728,000
Ending Balance		$ 39,381,000		$ 42,728,000
Affiliate investments
Investments in and Advances to Affiliates, Activity [Line Items]
Investment owned, percent of net assets		2.60%	[1],[2],[3],[5],[11]	12.40%	[6],[7],[8],[10],[12]
Net Realized Gain (Loss) for Period		$ 0		$ 13,408,000		0
Amount of Investment Income		4,753,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[12]	39,091,000
Gross Additions		1,056,000
Gross Reductions		(33,722,000)
Net Unrealized Appreciation (Depreciation)		3,996,000
Ending Balance		$ 10,421,000	[11]	$ 39,091,000	[12]
Affiliate investments | Secured first lien debt
Investments in and Advances to Affiliates, Activity [Line Items]
Investment owned, percent of net assets		0.70%	[1],[2],[3],[5],[11]	11.00%	[6],[7],[8],[10],[12]
Net Realized Gain (Loss) for Period		$ 0
Amount of Investment Income		4,753,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[12]	34,804,000
Gross Additions		556,000
Gross Reductions		(33,722,000)
Net Unrealized Appreciation (Depreciation)		1,257,000
Ending Balance		$ 2,895,000		$ 34,804,000	[12]
Affiliate investments | Secured first lien debt | Diversified/Conglomerate Manufacturing
Investments in and Advances to Affiliates, Activity [Line Items]
Investment owned, percent of net assets		0.70%		0.80%	[6],[7],[8],[10],[12]
Affiliate investments | Secured first lien debt | Diversified/Conglomerate Service
Investments in and Advances to Affiliates, Activity [Line Items]
Investment owned, percent of net assets		0.00%		10.20%	[6],[7],[8],[10],[12]
Net Realized Gain (Loss) for Period		$ 0
Amount of Investment Income		4,795,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[12]	32,254,000
Gross Additions		556,000
Gross Reductions		(33,722,000)
Net Unrealized Appreciation (Depreciation)		912,000
Ending Balance		$ 0		$ 32,254,000	[12]
Affiliate investments | Preferred equity
Investments in and Advances to Affiliates, Activity [Line Items]
Investment owned, percent of net assets		1.30%	[1],[2],[3],[5],[11]	1.20%	[6],[7],[8],[10],[12]
Net Realized Gain (Loss) for Period		$ 0
Amount of Investment Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[12]	3,640,000
Gross Additions		0
Gross Reductions		0
Net Unrealized Appreciation (Depreciation)		1,482,000
Ending Balance		$ 5,122,000	[11]	$ 3,640,000	[12]
Affiliate investments | Preferred equity | Diversified/Conglomerate Manufacturing
Investments in and Advances to Affiliates, Activity [Line Items]
Investment owned, percent of net assets		0.00%	[1],[2],[3],[5],[11]	0.00%	[6],[7],[8],[10],[12]
Affiliate investments | Preferred equity | Diversified/Conglomerate Service
Investments in and Advances to Affiliates, Activity [Line Items]
Investment owned, percent of net assets		1.10%	[1],[2],[3],[5],[11]	0.90%	[6],[7],[8],[10],[12]
Affiliate investments | Preferred equity | Personal and Non-Durable Consumer Products (Manufacturing Only)
Investments in and Advances to Affiliates, Activity [Line Items]
Investment owned, percent of net assets		0.20%	[1],[2],[3],[5],[11]	0.30%	[6],[7],[8],[10],[12]
Affiliate investments | Common equity/equivalents
Investments in and Advances to Affiliates, Activity [Line Items]
Investment owned, percent of net assets		0.60%	[1],[2],[3],[5],[11]	0.20%	[6],[7],[8],[10],[12]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[12]	$ 647,000
Ending Balance	[12]			$ 647,000
Affiliate investments | Common equity/equivalents | Personal and Non-Durable Consumer Products (Manufacturing Only)
Investments in and Advances to Affiliates, Activity [Line Items]
Investment owned, percent of net assets		0.60%		0.20%	[6],[7],[8],[10],[12]
Control investments
Investments in and Advances to Affiliates, Activity [Line Items]
Investment owned, percent of net assets		7.50%	[1],[2],[3],[5],[13]	11.30%	[6],[7],[8],[10],[14]
Net Realized Gain (Loss) for Period		$ 2,684,000		$ (8,496,000)		$ 0
Amount of Investment Income		3,883,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[14]	35,713,000
Gross Additions		677,000
Gross Reductions		(1,456,000)
Net Unrealized Appreciation (Depreciation)		(4,084,000)
Ending Balance		$ 30,850,000	[13]	$ 35,713,000	[14]
Control investments | Secured first lien debt
Investments in and Advances to Affiliates, Activity [Line Items]
Investment owned, percent of net assets		3.90%	[1],[2],[3],[5],[13]	4.90%	[6],[7],[8],[10],[14]
Net Realized Gain (Loss) for Period		$ 0
Amount of Investment Income		2,117,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		15,423,000
Gross Additions		677,000
Gross Reductions		(200,000)
Net Unrealized Appreciation (Depreciation)		220,000
Ending Balance		$ 16,120,000	[13]	$ 15,423,000
Control investments | Secured first lien debt | Diversified/Conglomerate Manufacturing
Investments in and Advances to Affiliates, Activity [Line Items]
Investment owned, percent of net assets		0.90%	[1],[2],[3],[5],[13]	1.00%	[6],[7],[8],[10],[14]
Control investments | Secured first lien debt | Personal and Non-Durable Consumer Products (Manufacturing Only)
Investments in and Advances to Affiliates, Activity [Line Items]
Investment owned, percent of net assets		2.80%	[1],[2],[3],[5],[13]	3.60%	[6],[7],[8],[10],[14]
Net Realized Gain (Loss) for Period		$ 0
Amount of Investment Income		1,740,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[14]	11,393,000
Gross Additions		0
Gross Reductions		(100,000)
Net Unrealized Appreciation (Depreciation)		0
Ending Balance		$ 11,293,000	[13]	$ 11,393,000	[14]
Control investments | Secured first lien debt | Printing and Publishing
Investments in and Advances to Affiliates, Activity [Line Items]
Investment owned, percent of net assets		0.20%	[1],[2],[3],[5],[13]	0.30%	[6],[7],[8],[10],[14]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[14]	$ 15,423,000
Ending Balance	[14]			$ 15,423,000
Control investments | Secured second lien debt
Investments in and Advances to Affiliates, Activity [Line Items]
Investment owned, percent of net assets		1.80%	[1],[2],[3],[5],[13]	2.40%	[6],[7],[8],[10],[14]
Control investments | Secured second lien debt | Automobile
Investments in and Advances to Affiliates, Activity [Line Items]
Investment owned, percent of net assets		1.80%		2.40%	[6],[7],[8],[10],[14]
Control investments | Unsecured debt
Investments in and Advances to Affiliates, Activity [Line Items]
Investment owned, percent of net assets		0.00%		0.00%	[6],[7],[8],[10],[14]
Control investments | Unsecured debt | Diversified/Conglomerate Manufacturing
Investments in and Advances to Affiliates, Activity [Line Items]
Investment owned, percent of net assets		0.00%		0.00%	[6],[7],[8],[10],[14]
Control investments | Preferred equity
Investments in and Advances to Affiliates, Activity [Line Items]
Investment owned, percent of net assets		0.00%	[1],[2],[3],[5],[13]	1.80%	[6],[7],[8],[10],[14]
Control investments | Preferred equity | Personal and Non-Durable Consumer Products (Manufacturing Only)
Investments in and Advances to Affiliates, Activity [Line Items]
Investment owned, percent of net assets		0.00%		1.80%	[6],[7],[8],[10],[14]
Control investments | Common equity/equivalents
Investments in and Advances to Affiliates, Activity [Line Items]
Investment owned, percent of net assets		1.80%	[1],[2],[3],[5],[13]	2.20%	[6],[7],[8],[10],[14]
Net Realized Gain (Loss) for Period		$ 2,779,000
Amount of Investment Income		691,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[14]	6,938,000
Gross Additions		0
Gross Reductions		(921,000)
Net Unrealized Appreciation (Depreciation)		1,288,000
Ending Balance		$ 7,305,000	[13]	$ 6,938,000	[14]
Control investments | Common equity/equivalents | Diversified/Conglomerate Manufacturing
Investments in and Advances to Affiliates, Activity [Line Items]
Investment owned, percent of net assets		0.00%	[1],[2],[3],[5],[13]	0.00%	[6],[7],[8],[10],[14]
Net Realized Gain (Loss) for Period		$ (921,000)
Amount of Investment Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[14]	0
Gross Additions		0
Gross Reductions		(921,000)
Net Unrealized Appreciation (Depreciation)		921,000
Ending Balance		$ 0		$ 0	[14]
Control investments | Common equity/equivalents | Printing and Publishing
Investments in and Advances to Affiliates, Activity [Line Items]
Investment owned, percent of net assets		0.70%	[1],[2],[3],[5],[13]	0.70%
Control investments | Common equity/equivalents | Automobile
Investments in and Advances to Affiliates, Activity [Line Items]
Investment owned, percent of net assets		1.00%	[1],[2],[3],[5],[13]	0.40%	[6],[7],[8],[10],[14]
Control investments | Common equity/equivalents | Machinery
Investments in and Advances to Affiliates, Activity [Line Items]
Investment owned, percent of net assets		0.10%	[1],[2],[3],[5],[13]	1.10%	[6],[7],[8],[10],[14]
Investment, Identifier [Axis]: Leeds Novamark Capital I, L.P. – Limited Partnership Interest
Investments in and Advances to Affiliates, Activity [Line Items]
Units	[15],[16],[17],[18],[19]			3.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[16],[18],[19]	$ 6,397,000
Ending Balance	[16],[18],[19]			$ 6,397,000
Line of credit facility, available	[6],[7],[8],[10],[16],[18],[19]			$ 843,000
Investment, Identifier [Axis]: Antenna Research Associates, Inc. – Common Equity Units
Investments in and Advances to Affiliates, Activity [Line Items]
Shares	[15],[17],[18],[20]			4,283
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	13,734,000
Ending Balance	[18],[20]			$ 13,734,000
Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Common Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares	[15],[17],[18],[20]			6,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	1,773,000
Ending Balance	[18],[20]			$ 1,773,000
Investment, Identifier [Axis]: Ohio Armor Holdings, LLC – Common Equity
Investments in and Advances to Affiliates, Activity [Line Items]
Shares	[15],[17],[18],[20]			100
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	1,017,000
Ending Balance	[18],[20]			$ 1,017,000
Investment, Identifier [Axis]: 8th Avenue Food & Provisions, Inc. – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		3,683,000	[21],[22],[23]	3,682,000	[15],[17],[24]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[24]	3,020,000
Ending Balance		$ 2,495,000	[21]	$ 3,020,000	[24]
Investment, reference rate and spread		7.90%	[1],[2],[3],[5],[21]	7.80%	[6],[7],[8],[10],[24]
Investment, interest rate, paid in cash		13.20%	[1],[2],[3],[5],[21]	10.90%	[6],[7],[8],[10],[24]
Investment, Identifier [Axis]: ALS Education, LLC – Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		$ 0	[22],[23],[25]	$ 0	[15],[17],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	0
Ending Balance		0	[25]	0	[26]
Line of credit facility, available		$ 3,000,000	[1],[2],[3],[5],[25]	$ 3,000,000	[6],[7],[8],[10],[26]
Investment, reference rate and spread		7.00%	[1],[2],[3],[5],[25]	7.00%	[6],[7],[8],[10],[26]
Investment, interest rate, paid in cash		12.30%	[1],[2],[3],[5],[25]	10.10%	[6],[7],[8],[10],[26]
Investment, Identifier [Axis]: ALS Education, LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		$ 18,700,000	[22],[23],[25]	$ 19,690,000	[15],[17],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	19,468,000
Ending Balance		$ 18,700,000	[25]	$ 19,468,000	[26]
Investment, reference rate and spread		7.00%	[1],[2],[3],[5],[25]	7.00%	[6],[7],[8],[10],[26]
Investment, interest rate, paid in cash		12.30%	[1],[2],[3],[5],[25]	10.10%	[6],[7],[8],[10],[26]
Investment, Identifier [Axis]: Antenna Research Associates, Inc. – Common Equity Units
Investments in and Advances to Affiliates, Activity [Line Items]
Shares	[22],[23],[27],[28]	4,283,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[27],[28]	$ 18,436,000
Investment, Identifier [Axis]: Antenna Research Associates, Inc. – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		30,048,000	[22],[23],[27]	$ 21,973,000	[15],[17],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[20]	21,973,000
Ending Balance		$ 30,048,000	[27]	$ 21,973,000	[20]
Investment, interest rate, paid in kind		4.00%	[1],[2],[3],[5],[27]	4.00%	[6],[7],[8],[10],[20]
Investment, reference rate and spread		10.00%	[1],[2],[3],[5],[27]	10.00%	[6],[7],[8],[10],[20]
Investment, interest rate, paid in cash		15.30%	[1],[2],[3],[5],[27]	13.00%	[6],[7],[8],[10],[20]
Investment, Identifier [Axis]: Arc Drilling Holdings LLC – Common Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		15,000,000	[22],[23],[27],[28]	15,000	[15],[17],[18],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	$ 0
Ending Balance		403,000	[27],[28]	$ 0	[18],[20]
Investment, Identifier [Axis]: Arc Drilling Holdings LLC – Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		0	[22],[23],[25]	0	[15],[17],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	0
Ending Balance		$ 0	[25]	0	[26]
Investment, interest rate, paid in kind	[1],[2],[3],[5],[25]	6.30%
Line of credit facility, available		$ 1,000,000	[1],[2],[3],[5],[25]	$ 1,000,000	[6],[7],[8],[10],[26]
Investment, reference rate and spread		11.50%	[1],[2],[3],[5],[25]	8.00%	[6],[7],[8],[10],[26]
Investment, interest rate, paid in cash		10.50%	[1],[2],[3],[5],[25]	11.10%	[6],[7],[8],[10],[26]
Investment, Identifier [Axis]: Arc Drilling Holdings LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[25]	$ 5,928,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[25]	$ 5,724,000
Investment, interest rate, paid in kind	[1],[2],[3],[5],[25]	6.30%
Investment, reference rate and spread	[1],[2],[3],[5],[25]	11.50%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[25]	10.50%
Investment, Identifier [Axis]: Arc Drilling Holdings LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[26]			$ 5,625,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	$ 5,350,000
Ending Balance	[26]			$ 5,350,000
Investment, interest rate, paid in kind	[6],[7],[8],[10],[26]			3.00%
Investment, reference rate and spread	[6],[7],[8],[10],[26]			9.50%
Investment, interest rate, paid in cash	[6],[7],[8],[10],[26]			12.60%
Investment, Identifier [Axis]: Axios Industrial Group, LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		11,550,000	[22],[23],[25]	$ 9,000,000	[15],[17],[26],[29]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26],[29]	8,741,000
Ending Balance		$ 11,291,000	[25]	$ 8,741,000	[26],[29]
Investment, reference rate and spread		8.60%	[1],[2],[3],[5],[25]	9.50%	[6],[7],[8],[10],[26],[29]
Investment, interest rate, paid in cash		13.90%	[1],[2],[3],[5],[25]	12.60%	[6],[7],[8],[10],[26],[29]
Investment, Identifier [Axis]: Axios Industrial Group, LLC– Delayed Draw Term Loan
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[26],[29]			$ 3,000,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26],[29]	$ 2,914,000
Ending Balance	[26],[29]			2,914,000
Line of credit facility, available	[6],[7],[8],[10],[26],[29]			$ 5,000,000
Investment, reference rate and spread	[6],[7],[8],[10],[26],[29]			9.50%
Investment, interest rate, paid in cash	[6],[7],[8],[10],[26],[29]			12.60%
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[25],[30]	1,200,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[25],[30]	978,000
Line of credit facility, available	[1],[2],[3],[5],[25],[30]	$ 0
Investment, reference rate and spread	[1],[2],[3],[5],[25],[30]	2.00%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[25],[30]	7.30%
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[25],[30]	$ 6,000,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[25],[30]	$ 4,890,000
Investment, reference rate and spread	[1],[2],[3],[5],[25],[30]	2.00%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[25],[30]	7.30%
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.(S) – Common Stock Warrant
Investments in and Advances to Affiliates, Activity [Line Items]
Units		1.50%	[22],[23],[27],[28],[30]	1.50%	[15],[17],[18],[20],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20],[31]	$ 25,000
Ending Balance		0	[27],[28],[30]	$ 25,000	[18],[20],[31]
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.(S) – Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[26],[31]			1,200,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26],[31]	$ 1,146,000
Ending Balance	[26],[31]			1,146,000
Line of credit facility, available	[6],[7],[8],[10],[26],[31]			$ 0
Investment, reference rate and spread	[6],[7],[8],[10],[26],[31]			11.00%
Investment, interest rate, paid in cash	[6],[7],[8],[10],[26],[31]			14.10%
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.(S) – Preferred Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		6,130,000	[22],[23],[27],[28],[30]	6,130	[15],[17],[18],[20],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20],[31]	$ 2,718,000
Ending Balance		0	[27],[28],[30]	$ 2,718,000	[18],[20],[31]
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.(S) – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[26],[31]			6,000,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26],[31]	5,730,000
Ending Balance	[26],[31]			$ 5,730,000
Investment, reference rate and spread	[6],[7],[8],[10],[26],[31]			11.00%
Investment, interest rate, paid in cash	[6],[7],[8],[10],[26],[31]			14.10%
Investment, Identifier [Axis]: CHA Holdings, Inc. – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[21],[22],[23],[32]	3,000,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[21],[32]	$ 2,820,000
Investment, reference rate and spread	[1],[2],[3],[5],[21],[32]	9.00%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[21],[32]	14.40%
Investment, Identifier [Axis]: CHA Holdings, Inc. – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[24],[33]			$ 3,000,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[24],[33]	$ 2,700,000
Ending Balance	[24],[33]			$ 2,700,000
Investment, reference rate and spread	[6],[7],[8],[10],[24],[33]			8.80%
Investment, interest rate, paid in cash	[6],[7],[8],[10],[24],[33]			12.50%
Investment, Identifier [Axis]: CPM Holdings, Inc. – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[24]			$ 798,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[24]	758,000
Ending Balance	[24]			$ 758,000
Investment, reference rate and spread	[6],[7],[8],[10],[24]			8.30%
Investment, interest rate, paid in cash	[6],[7],[8],[10],[24]			11.40%
Investment, Identifier [Axis]: Cafe Zupas – Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[25]	0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[25]	0
Line of credit facility, available	[1],[2],[3],[5],[25]	$ 1,500,000
Investment, reference rate and spread	[1],[2],[3],[5],[25]	6.80%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[25]	12.10%
Investment, Identifier [Axis]: Café Zupas – Delayed Draw Term Loan
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		$ 7,970,000	[22],[23],[25]	$ 1,970,000	[15],[17],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	1,958,000
Ending Balance		7,850,000	[25]	1,958,000	[26]
Line of credit facility, available		$ 2,070,000	[1],[2],[3],[5],[25]	$ 0	[6],[7],[8],[10],[26]
Investment, reference rate and spread		6.80%	[1],[2],[3],[5],[25]	7.40%	[6],[7],[8],[10],[26]
Investment, interest rate, paid in cash		12.10%	[1],[2],[3],[5],[25]	10.50%	[6],[7],[8],[10],[26]
Investment, Identifier [Axis]: Café Zupas – Line of Credit,
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[26]			$ 0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	$ 0
Ending Balance	[26]			0
Line of credit facility, available	[6],[7],[8],[10],[26]			$ 4,000,000
Investment, reference rate and spread	[6],[7],[8],[10],[26]			7.40%
Investment, interest rate, paid in cash	[6],[7],[8],[10],[26]			10.50%
Investment, Identifier [Axis]: Café Zupas – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		23,460,000	[22],[23],[25]	$ 23,460,000	[15],[17],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	23,313,000
Ending Balance		$ 23,108,000	[25]	$ 23,313,000	[26]
Investment, reference rate and spread		6.80%	[1],[2],[3],[5],[25]	7.40%	[6],[7],[8],[10],[26]
Investment, interest rate, paid in cash		12.10%	[1],[2],[3],[5],[25]	10.50%	[6],[7],[8],[10],[26]
Investment, Identifier [Axis]: Canopy Safety Brands, LLC – Common Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		1,170,370,000	[22],[23],[27],[28]	800,000	[15],[17],[18],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	$ 647,000
Ending Balance		$ 2,404,000	[27],[28]	$ 647,000	[18],[20]
Investment, Identifier [Axis]: Canopy Safety Brands, LLC – Preferred Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		500,000,000	[22],[23],[27],[28]	500,000	[15],[17],[18],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	$ 798,000
Ending Balance		$ 857,000	[27],[28]	$ 798,000	[18],[20]
Investment, Identifier [Axis]: Canopy Safety Brands, LLC—Common Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		1,170,370
Net Realized Gain (Loss) for Period		$ 0
Amount of Investment Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		647,000
Gross Additions		500,000
Gross Reductions		0
Net Unrealized Appreciation (Depreciation)		1,257,000
Ending Balance		$ 2,404,000		647,000
Investment, Identifier [Axis]: Canopy Safety Brands, LLC—Preferred Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		500,000
Net Realized Gain (Loss) for Period		$ 0
Amount of Investment Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		798,000
Gross Additions		0
Gross Reductions		0
Net Unrealized Appreciation (Depreciation)		59,000
Ending Balance		857,000		798,000
Investment, Identifier [Axis]: Chinese Yellow Pages Company – Line of Credit,
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[20],[34],[35]			107,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[20],[34],[35]	0
Ending Balance	[20],[34],[35]			0
Line of credit facility, available	[6],[7],[8],[10],[20],[34],[35]			$ 0
Investment, reference rate and spread	[6],[7],[8],[10],[20],[34],[35]			4.00%
Investment, interest rate, paid in cash	[6],[7],[8],[10],[20],[34],[35]			10.30%
Investment, Identifier [Axis]: Circuitronics EMS Holdings LLC – Common Units
Investments in and Advances to Affiliates, Activity [Line Items]
Shares	[15],[17],[18],[20]			921,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	$ 0
Ending Balance	[18],[20]			$ 0
Investment, Identifier [Axis]: Circuitronics EMS Holdings LLC—Common Units
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		0
Net Realized Gain (Loss) for Period		$ (921,000)
Amount of Investment Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		0
Gross Additions		0
Gross Reductions		(921,000)
Net Unrealized Appreciation (Depreciation)		921,000
Ending Balance		0		0
Investment, Identifier [Axis]: DKI Ventures, LLC – Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[25],[36]	205,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[25],[36]	113,000
Line of credit facility, available	[1],[2],[3],[5],[25],[36]	$ 170,000
Investment, interest rate, paid in cash	[1],[2],[3],[5],[25],[36]	9.00%
Investment, Identifier [Axis]: DKI Ventures, LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		$ 5,915,000	[22],[23],[25],[36]	5,915,000	[15],[17],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	4,554,000
Ending Balance		$ 3,253,000	[25],[36]	$ 4,554,000	[26]
Investment, reference rate and spread	[6],[7],[8],[10],[26]			8.00%
Investment, interest rate, paid in cash		9.00%	[1],[2],[3],[5],[25],[36]	11.00%	[6],[7],[8],[10],[26]
Investment, Identifier [Axis]: Defiance Integrated Technologies, Inc. – Common Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		33,321,000	[22],[23],[27],[28]	33,321	[15],[17],[18],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	$ 1,147,000
Ending Balance		3,948,000	[27],[28]	$ 1,147,000	[18],[20]
Investment, Identifier [Axis]: Defiance Integrated Technologies, Inc. – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[27]	7,425,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[27]	$ 7,425,000
Investment, reference rate and spread	[1],[2],[3],[5],[27]	9.60%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[27]	14.90%
Investment, Identifier [Axis]: Defiance Integrated Technologies, Inc. – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[20]			7,665,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[20]	$ 7,665,000
Ending Balance	[20]			$ 7,665,000
Investment, reference rate and spread	[6],[7],[8],[10],[20]			9.50%
Investment, interest rate, paid in cash	[6],[7],[8],[10],[20]			12.60%
Investment, Identifier [Axis]: Defiance Integrated Technologies, Inc.—Common Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		33,321
Net Realized Gain (Loss) for Period		$ 0
Amount of Investment Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		1,147,000
Gross Additions		0
Gross Reductions		0
Net Unrealized Appreciation (Depreciation)		2,801,000
Ending Balance		3,948,000		$ 1,147,000
Investment, Identifier [Axis]: Defiance Integrated Technologies, Inc.—Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		7,425,000
Net Realized Gain (Loss) for Period		0
Amount of Investment Income		1,075,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		7,665,000
Gross Additions		0
Gross Reductions		(240,000)
Net Unrealized Appreciation (Depreciation)		0
Ending Balance		7,425,000		7,665,000
Investment, Identifier [Axis]: ENET Holdings, LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		22,289,000	[22],[23],[25]	24,360,000	[15],[17],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	23,142,000
Ending Balance		$ 21,397,000	[25]	$ 23,142,000	[26]
Investment, reference rate and spread		8.30%	[1],[2],[3],[5],[25]	7.30%	[6],[7],[8],[10],[26]
Investment, interest rate, paid in cash		13.60%	[1],[2],[3],[5],[25]	10.40%	[6],[7],[8],[10],[26]
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. – Preferred Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		5,466,000	[22],[23],[27],[28],[30]	5,466	[15],[17],[18],[20],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20],[31]	$ 0
Ending Balance		0	[27],[28],[30]	$ 0	[18],[20],[31]
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[27],[30],[37]	6,140,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[27],[30],[37]	$ 2,895,000
Investment, reference rate and spread	[1],[2],[3],[5],[27],[30],[37]	5.50%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[27],[30],[37]	10.80%
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[20],[31]			6,140,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[20],[31]	$ 2,550,000
Ending Balance	[20],[31]			$ 2,550,000
Investment, reference rate and spread	[6],[7],[8],[10],[20],[31]			5.50%
Investment, interest rate, paid in cash	[6],[7],[8],[10],[20],[31]			8.60%
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc.—Preferred Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		5,466
Net Realized Gain (Loss) for Period		$ 0
Amount of Investment Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		0
Gross Additions		0
Gross Reductions		0
Net Unrealized Appreciation (Depreciation)		0
Ending Balance		0		$ 0
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc.—Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		6,140,000
Net Realized Gain (Loss) for Period		0
Amount of Investment Income		(42,000)
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		2,550,000
Gross Additions		0
Gross Reductions		0
Net Unrealized Appreciation (Depreciation)		345,000
Ending Balance		2,895,000		2,550,000
Investment, Identifier [Axis]: Eegee’s LLC – Delayed Draw Term Loan
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		3,000,000	[22],[23],[25]	3,000,000	[15],[17],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	2,910,000
Ending Balance		2,865,000	[25]	2,910,000	[26]
Line of credit facility, available		$ 4,500,000	[1],[2],[3],[5],[25]	$ 4,500,000	[6],[7],[8],[10],[26]
Investment, reference rate and spread		7.80%	[1],[2],[3],[5],[25]	8.30%	[6],[7],[8],[10],[26]
Investment, interest rate, paid in cash		13.10%	[1],[2],[3],[5],[25]	11.40%	[6],[7],[8],[10],[26]
Investment, Identifier [Axis]: Eegee’s LLC – Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		$ 0	[22],[23],[25]	$ 0	[15],[17],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	0
Ending Balance		0	[25]	0	[26]
Line of credit facility, available		$ 1,000,000	[1],[2],[3],[5],[25]	$ 1,000,000	[6],[7],[8],[10],[26]
Investment, reference rate and spread		7.80%	[1],[2],[3],[5],[25]	8.30%	[6],[7],[8],[10],[26]
Investment, interest rate, paid in cash		13.10%	[1],[2],[3],[5],[25]	11.40%	[6],[7],[8],[10],[26]
Investment, Identifier [Axis]: Eegee’s LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[25]	$ 17,000,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[25]	$ 16,235,000
Investment, reference rate and spread	[1],[2],[3],[5],[25]	7.80%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[25]	13.10%
Investment, Identifier [Axis]: Eegee’s LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[26]			$ 17,000,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	$ 16,490,000
Ending Balance	[26]			$ 16,490,000
Investment, reference rate and spread	[6],[7],[8],[10],[26]			8.30%
Investment, interest rate, paid in cash	[6],[7],[8],[10],[26]			11.40%
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC – Delayed Draw Term Loan
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[26]			$ 5,023,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	4,885,000
Ending Balance	[26]			$ 4,885,000
Investment, interest rate, paid in kind	[6],[7],[8],[10],[26]			1.50%
Line of credit facility, available	[6],[7],[8],[10],[26]			$ 0
Investment, reference rate and spread	[6],[7],[8],[10],[26]			7.00%
Investment, interest rate, paid in cash	[6],[7],[8],[10],[26]			10.10%
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC – Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[26]			$ 0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	$ 0
Ending Balance	[26]			0
Line of credit facility, available	[6],[7],[8],[10],[26]			$ 3,000,000
Investment, reference rate and spread	[6],[7],[8],[10],[26]			8.30%
Investment, interest rate, paid in cash	[6],[7],[8],[10],[26]			11.40%
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC – Preferred Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		3,840,000,000	[22],[23],[27],[28]	3,840,000	[15],[17],[18],[20],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20],[31]	$ 2,842,000
Ending Balance		4,265,000	[27],[28]	$ 2,842,000	[18],[20],[31]
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC – Term Debt 1
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[26]			23,611,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	22,962,000
Ending Balance	[26]			$ 22,962,000
Investment, interest rate, paid in kind	[6],[7],[8],[10],[26]			1.50%
Investment, reference rate and spread	[6],[7],[8],[10],[26]			7.00%
Investment, interest rate, paid in cash	[6],[7],[8],[10],[26]			10.10%
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC – Term Debt 2
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[26]			$ 4,532,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	4,407,000
Ending Balance	[26]			$ 4,407,000
Investment, interest rate, paid in kind	[6],[7],[8],[10],[26]			2.50%
Investment, reference rate and spread	[6],[7],[8],[10],[26]			7.00%
Investment, interest rate, paid in cash	[6],[7],[8],[10],[26]			10.10%
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC—Delayed Draw Term Loan
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		0
Net Realized Gain (Loss) for Period		0
Amount of Investment Income		700,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		4,885,000
Gross Additions		78,000
Gross Reductions		(5,101,000)
Net Unrealized Appreciation (Depreciation)		138,000
Ending Balance		0		$ 4,885,000
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC—Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		0
Net Realized Gain (Loss) for Period		0
Amount of Investment Income		75,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		0
Gross Additions		0
Gross Reductions		0
Net Unrealized Appreciation (Depreciation)		0
Ending Balance		$ 0		0
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC—Preferred Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		3,840,000
Net Realized Gain (Loss) for Period		$ 0
Amount of Investment Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		2,842,000
Gross Additions		0
Gross Reductions		0
Net Unrealized Appreciation (Depreciation)		1,423,000
Ending Balance		4,265,000		2,842,000
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC—Term Debt 1
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		0
Net Realized Gain (Loss) for Period		0
Amount of Investment Income		3,293,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		22,962,000
Gross Additions		362,000
Gross Reductions		(23,973,000)
Net Unrealized Appreciation (Depreciation)		649,000
Ending Balance		0		22,962,000
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC—Term Debt 2
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		0
Net Realized Gain (Loss) for Period		0
Amount of Investment Income		727,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		4,407,000
Gross Additions		116,000
Gross Reductions		(4,648,000)
Net Unrealized Appreciation (Depreciation)		125,000
Ending Balance		$ 0		4,407,000
Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Common Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares	[22],[23],[27],[28]	6,000,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[27],[28]	$ 0
Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		0	[22],[23],[25]	0	[15],[17],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	0
Ending Balance		0	[25]	0	[26]
Line of credit facility, available		$ 3,000,000	[1],[2],[3],[5],[25]	$ 3,000,000	[6],[7],[8],[10],[26]
Investment, reference rate and spread		8.30%	[1],[2],[3],[5],[25]	8.30%	[6],[7],[8],[10],[26]
Investment, interest rate, paid in cash		13.60%	[1],[2],[3],[5],[25]	11.40%	[6],[7],[8],[10],[26]
Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		$ 21,500,000	[22],[23],[25]	$ 22,500,000	[15],[17],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	22,134,000
Ending Balance		$ 19,726,000	[25]	$ 22,134,000	[26]
Investment, reference rate and spread		8.30%	[1],[2],[3],[5],[25]	8.30%	[6],[7],[8],[10],[26]
Investment, interest rate, paid in cash		13.60%	[1],[2],[3],[5],[25]	11.40%	[6],[7],[8],[10],[26]
Investment, Identifier [Axis]: FES Resources Holdings LLC – Common Equity Units
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		6,233,000	[22],[23],[27],[28]	6,233	[15],[17],[18],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	$ 0
Ending Balance		$ 0	[27],[28]	$ 0	[18],[20]
Investment, Identifier [Axis]: FES Resources Holdings LLC – Preferred Equity Units
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		6,350,000	[22],[23],[27],[28]	6,350	[15],[17],[18],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	$ 0
Ending Balance		4,508,000	[27],[28]	$ 0	[18],[20]
Investment, Identifier [Axis]: Fix-It Group, LLC – Delayed Draw Term Loan
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		6,911,000	[22],[23],[25]	0	[15],[17],[26],[33]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26],[33]	0
Ending Balance		6,894,000	[25]	0	[26],[33]
Line of credit facility, available		$ 0	[1],[2],[3],[5],[25]	$ 10,000,000	[6],[7],[8],[10],[26],[33]
Investment, reference rate and spread		8.10%	[1],[2],[3],[5],[25]	7.00%	[6],[7],[8],[10],[26],[33]
Investment, interest rate, paid in cash		13.40%	[1],[2],[3],[5],[25]	10.10%	[6],[7],[8],[10],[26],[33]
Investment, Identifier [Axis]: Fix-It Group, LLC – Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		$ 500,000	[22],[23],[25]	$ 0	[15],[17],[26],[33]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26],[33]	0
Ending Balance		499,000	[25]	0	[26],[33]
Line of credit facility, available		$ 2,500,000	[1],[2],[3],[5],[25]	$ 3,000,000	[6],[7],[8],[10],[26],[33]
Investment, reference rate and spread		8.10%	[1],[2],[3],[5],[25]	7.00%	[6],[7],[8],[10],[26],[33]
Investment, interest rate, paid in cash		13.40%	[1],[2],[3],[5],[25]	10.10%	[6],[7],[8],[10],[26],[33]
Investment, Identifier [Axis]: Fix-It Group, LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		$ 12,200,000	[22],[23],[25]	$ 10,000,000	[15],[17],[26],[33]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26],[33]	9,950,000
Ending Balance		$ 12,170,000	[25]	$ 9,950,000	[26],[33]
Investment, reference rate and spread		8.10%	[1],[2],[3],[5],[25]	7.00%	[6],[7],[8],[10],[26],[33]
Investment, interest rate, paid in cash		13.40%	[1],[2],[3],[5],[25]	10.10%	[6],[7],[8],[10],[26],[33]
Investment, Identifier [Axis]: Frontier Financial Group Inc. – Convertible Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		$ 198,000	[22],[23],[27],[36]	$ 198,000	[15],[17],[20],[38]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[20],[38]	55,000
Ending Balance		$ 24,000	[27],[36]	$ 55,000	[20],[38]
Investment, reference rate and spread	[6],[7],[8],[10],[20],[38]			6.00%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[27],[36]	6.00%
Investment, Identifier [Axis]: Frontier Financial Group Inc. – Preferred Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		766,000	[22],[23],[27],[28]	766	[15],[17],[18],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	$ 0
Ending Balance		$ 0	[27],[28]	$ 0	[18],[20]
Investment, Identifier [Axis]: Frontier Financial Group Inc. – Preferred Stock Warrant
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		168,000	[22],[23],[27],[28]	168	[15],[17],[18],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	$ 0
Ending Balance		$ 0	[27],[28]	$ 0	[18],[20]
Investment, Identifier [Axis]: Funko Acquisition Holdings, LLC(S) – Common Units
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		4,239,000	[22],[23],[28],[30],[39]	4,239	[15],[17],[18],[31],[40]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[31],[40]	$ 58,000
Ending Balance		$ 22,000	[28],[30],[39]	$ 58,000	[18],[31],[40]
Investment, Identifier [Axis]: GFRC 360, LLC – Common Stock Warrants
Investments in and Advances to Affiliates, Activity [Line Items]
Units		45.00%	[22],[23],[27],[28]	45.00%	[15],[17],[18],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	$ 0
Ending Balance		0	[27],[28]	$ 0	[18],[20]
Investment, Identifier [Axis]: GFRC 360, LLC – Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		1,275,000	[22],[23],[25]	700,000	[15],[17],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	681,000
Ending Balance		1,205,000	[25]	681,000	[26]
Line of credit facility, available		$ 175,000	[1],[2],[3],[5],[25]	$ 500,000	[6],[7],[8],[10],[26]
Investment, reference rate and spread		8.00%	[1],[2],[3],[5],[25]	8.00%	[6],[7],[8],[10],[26]
Investment, interest rate, paid in cash		13.30%	[1],[2],[3],[5],[25]	11.10%	[6],[7],[8],[10],[26]
Investment, Identifier [Axis]: GFRC 360, LLC – Preferred Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		1,000,000	[22],[23],[27],[28]	1,000	[15],[17],[18],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	$ 551,000
Ending Balance		253,000	[27],[28]	$ 551,000	[18],[20]
Investment, Identifier [Axis]: GFRC 360, LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		1,000,000	[22],[23],[25]	1,000,000	[15],[17],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	973,000
Ending Balance		$ 945,000	[25]	$ 973,000	[26]
Investment, reference rate and spread		8.00%	[1],[2],[3],[5],[25]	8.00%	[6],[7],[8],[10],[26]
Investment, interest rate, paid in cash		13.30%	[1],[2],[3],[5],[25]	11.10%	[6],[7],[8],[10],[26]
Investment, Identifier [Axis]: GSM MidCo LLC – Common Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		767,000	[22],[23],[27],[28]	767	[15],[17],[18],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	$ 1,359,000
Ending Balance		1,562,000	[27],[28]	$ 1,359,000	[18],[20]
Investment, Identifier [Axis]: Giving Home Health Care, LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		28,800,000	[22],[23],[25],[36]	28,800,000	[15],[17],[26],[38]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26],[38]	28,800,000
Ending Balance		$ 28,800,000	[25],[36]	$ 28,800,000	[26],[38]
Investment, interest rate, paid in cash		12.50%	[1],[2],[3],[5],[25],[36]	12.50%	[6],[7],[8],[10],[26],[38]
Investment, Identifier [Axis]: Giving Home Health Care, LLC – Warrant
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		10,667,000	[22],[23],[27],[28]	10,667	[15],[17],[18],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	$ 19,000
Ending Balance		2,794,000	[27],[28]	$ 19,000	[18],[20]
Investment, Identifier [Axis]: Gray Matter Systems, LLC – Delayed Draw Term Loan
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[26],[38]			2,500,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26],[38]	2,481,000
Ending Balance	[26],[38]			2,481,000
Line of credit facility, available	[6],[7],[8],[10],[26],[38]			$ 4,000,000
Investment, interest rate, paid in cash	[6],[7],[8],[10],[26],[38]			11.30%
Investment, Identifier [Axis]: Gray Matter Systems, LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		13,645,000	[22],[23],[25],[36]	$ 2,100,000	[15],[17],[26],[38]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26],[38]	2,084,000
Ending Balance		$ 13,645,000	[25],[36]	$ 2,084,000	[26],[38]
Investment, interest rate, paid in kind	[1],[2],[3],[5],[25],[36]	2.00%
Investment, interest rate, paid in cash		12.00%	[1],[2],[3],[5],[25],[36]	11.30%	[6],[7],[8],[10],[26],[38]
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Delayed Draw Term Loan
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[26],[33]			$ 10,000,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26],[33]	$ 9,925,000
Ending Balance	[26],[33]			9,925,000
Line of credit facility, available	[6],[7],[8],[10],[26],[33]			$ 0
Investment, reference rate and spread	[6],[7],[8],[10],[26],[33]			6.80%
Investment, interest rate, paid in cash	[6],[7],[8],[10],[26],[33]			9.90%
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		1,359,000	[22],[23],[25],[32]	$ 1,500,000	[15],[17],[26],[33]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26],[33]	1,489,000
Ending Balance		1,347,000	[25],[32]	1,489,000	[26],[33]
Line of credit facility, available		$ 478,000	[1],[2],[3],[5],[25],[32]	$ 1,500,000	[6],[7],[8],[10],[26],[33]
Investment, reference rate and spread		8.00%	[1],[2],[3],[5],[25],[32]	6.80%	[6],[7],[8],[10],[26],[33]
Investment, interest rate, paid in cash		13.40%	[1],[2],[3],[5],[25],[32]	9.90%	[6],[7],[8],[10],[26],[33]
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Preferred Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		1,329,054,000	[22],[23],[27],[28]	854,848	[15],[17],[18],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	$ 945,000
Ending Balance		3,451,000	[27],[28]	$ 945,000	[18],[20]
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Term Debt 1
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		16,013,000	[22],[23],[25],[32]	16,000,000	[15],[17],[26],[33]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26],[33]	15,880,000
Ending Balance		$ 15,872,000	[25],[32]	$ 15,880,000	[26],[33]
Investment, reference rate and spread		8.00%	[1],[2],[3],[5],[25],[32]	6.80%	[6],[7],[8],[10],[26],[33]
Investment, interest rate, paid in cash		13.40%	[1],[2],[3],[5],[25],[32]	9.90%	[6],[7],[8],[10],[26],[33]
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Term Debt 2
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		$ 3,225,000	[22],[23],[25],[32]	$ 8,000,000	[15],[17],[26],[33]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26],[33]	7,940,000
Ending Balance		$ 3,197,000	[25],[32]	$ 7,940,000	[26],[33]
Investment, reference rate and spread		8.00%	[1],[2],[3],[5],[25],[32]	6.80%	[6],[7],[8],[10],[26],[33]
Investment, interest rate, paid in cash		13.40%	[1],[2],[3],[5],[25],[32]	9.90%	[6],[7],[8],[10],[26],[33]
Investment, Identifier [Axis]: Imperative Holdings Corporation – Preferred Equity Units
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		972,569,000	[22],[23],[27],[28]	1,474,225	[15],[17],[18],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	$ 2,028,000
Ending Balance		2,318,000	[27],[28]	$ 2,028,000	[18],[20]
Investment, Identifier [Axis]: Imperative Holdings Corporation – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[25]	21,015,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[25]	$ 20,858,000
Investment, reference rate and spread	[1],[2],[3],[5],[25]	9.80%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[25]	15.10%
Investment, Identifier [Axis]: Imperative Holdings Corporation – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[26]			24,016,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	$ 23,295,000
Ending Balance	[26]			$ 23,295,000
Investment, reference rate and spread	[6],[7],[8],[10],[26]			10.30%
Investment, interest rate, paid in cash	[6],[7],[8],[10],[26]			13.40%
Investment, Identifier [Axis]: LWO Acquisitions Company LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[20],[41]			$ 95,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[20],[41]	0
Ending Balance	[20],[41]			0
Investment, Identifier [Axis]: LWO Acquisitions Company LLC—Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		0
Net Realized Gain (Loss) for Period		(95,000)
Amount of Investment Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		0
Gross Additions		0
Gross Reductions		(95,000)
Net Unrealized Appreciation (Depreciation)		95,000
Ending Balance		0		0
Investment, Identifier [Axis]: Leadpoint Business Services, LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[25]	13,500,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[25]	$ 13,399,000
Investment, reference rate and spread	[1],[2],[3],[5],[25]	8.50%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[25]	13.80%
Investment, Identifier [Axis]: Leeds Novamark Capital I, L.P. – Limited Partnership Interest
Investments in and Advances to Affiliates, Activity [Line Items]
Units	[22],[23],[28],[42],[43]	3.50%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[28],[42],[43]	$ 231,000
Line of credit facility, available	[1],[2],[3],[5],[28],[42],[43]	843,000
Investment, Identifier [Axis]: Lonestar EMS, LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[27],[36]	3,927,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[27],[36]	$ 3,927,000
Investment, interest rate, paid in kind	[1],[2],[3],[5],[27],[36]	8.00%
Investment, Identifier [Axis]: Lonestar EMS, LLC - Common Units
Investments in and Advances to Affiliates, Activity [Line Items]
Units		100.00%
Net Realized Gain (Loss) for Period		$ 0
Amount of Investment Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		0
Gross Additions		0
Gross Reductions		0
Net Unrealized Appreciation (Depreciation)		0
Ending Balance		$ 0		$ 0
Investment, Identifier [Axis]: Lonestar EMS, LLC – Common Units
Investments in and Advances to Affiliates, Activity [Line Items]
Units		100.00%	[22],[23],[27],[28]	100.00%	[15],[17],[18],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	$ 0
Ending Balance		0	[27],[28]	$ 0	[18],[20]
Investment, Identifier [Axis]: Lonestar EMS, LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[20],[38]			3,250,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[20],[38]	3,030,000
Ending Balance	[20],[38]			$ 3,030,000
Investment, interest rate, paid in cash	[6],[7],[8],[10],[20],[38]			8.00%
Investment, Identifier [Axis]: Lonestar EMS, LLC—Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		3,927,000
Net Realized Gain (Loss) for Period		0
Amount of Investment Income		302,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		3,030,000
Gross Additions		677,000
Gross Reductions		0
Net Unrealized Appreciation (Depreciation)		220,000
Ending Balance		3,927,000		$ 3,030,000
Investment, Identifier [Axis]: MCG Energy Solutions, LLC – Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[26]			0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	$ 0
Ending Balance	[26]			0
Line of credit facility, available	[6],[7],[8],[10],[26]			$ 3,000,000
Investment, reference rate and spread	[6],[7],[8],[10],[26]			7.50%
Investment, interest rate, paid in cash	[6],[7],[8],[10],[26]			10.60%
Investment, Identifier [Axis]: MCG Energy Solutions, LLC – Preferred Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		7,000,000,000	[22],[23],[27],[28]	7,000,000	[15],[17],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[20]	$ 8,151,000
Ending Balance		8,904,000	[27],[28]	$ 8,151,000	[20]
Investment, Identifier [Axis]: MCG Energy Solutions, LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[25]	20,146,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[25]	$ 17,628,000
Investment, interest rate, paid in kind	[1],[2],[3],[5],[25]	3.50%
Investment, reference rate and spread	[1],[2],[3],[5],[25]	7.60%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[25]	12.90%
Investment, Identifier [Axis]: MCG Energy Solutions, LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[26]			20,820,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	$ 19,779,000
Ending Balance	[26]			$ 19,779,000
Investment, interest rate, paid in kind	[6],[7],[8],[10],[26]			3.50%
Investment, reference rate and spread	[6],[7],[8],[10],[26]			7.50%
Investment, interest rate, paid in cash	[6],[7],[8],[10],[26]			10.60%
Investment, Identifier [Axis]: NeoGraf Solutions LLC – Common Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares	[22],[23],[27],[28]	2,000,000,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[27],[28]	$ 0
Investment, Identifier [Axis]: NeoGraf Solutions LLC – Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[25]	0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[25]	$ 0
Investment, interest rate, paid in kind	[1],[2],[3],[5],[25]	1.30%
Line of credit facility, available	[1],[2],[3],[5],[25]	$ 4,500,000
Investment, reference rate and spread	[1],[2],[3],[5],[25]	7.00%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[25]	11.00%
Investment, Identifier [Axis]: NeoGraf Solutions LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[25]	$ 27,154,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[25]	$ 26,000,000
Investment, interest rate, paid in kind	[1],[2],[3],[5],[25]	1.30%
Investment, reference rate and spread	[1],[2],[3],[5],[25]	7.00%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[25]	11.00%
Investment, Identifier [Axis]: NetFortris Corp. – Preferred Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares	[15],[17],[18],[20]			7,890,860
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	$ 469,000
Ending Balance	[18],[20]			$ 469,000
Investment, Identifier [Axis]: OCI, LLC – Common Units
Investments in and Advances to Affiliates, Activity [Line Items]
Shares	[22],[23],[27],[28]	306,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[27],[28]	$ 0
Investment, Identifier [Axis]: OCI, LLC – Term Debt 1
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[25]	20,000,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[25]	$ 19,800,000
Investment, reference rate and spread	[1],[2],[3],[5],[25]	7.50%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[25]	12.80%
Investment, Identifier [Axis]: OCI, LLC – Term Debt 2
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[25],[36]	$ 2,012,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[25],[36]	$ 1,992,000
Investment, interest rate, paid in kind	[1],[2],[3],[5],[25],[36]	7.00%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[25],[36]	7.00%
Investment, Identifier [Axis]: Ohio Armor Holdings, LLC – Common Equity
Investments in and Advances to Affiliates, Activity [Line Items]
Shares	[22],[23],[27],[28]	100,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[27],[28]	$ 680,000
Investment, Identifier [Axis]: Ohio Armor Holdings, LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		17,738,000	[22],[23],[25]	18,913,000	[15],[17],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	18,558,000
Ending Balance		$ 17,294,000	[25]	$ 18,558,000	[26]
Investment, reference rate and spread		8.00%	[1],[2],[3],[5],[25]	8.00%	[6],[7],[8],[10],[26]
Investment, interest rate, paid in cash		13.30%	[1],[2],[3],[5],[25]	11.10%	[6],[7],[8],[10],[26]
Investment, Identifier [Axis]: PIC 360, LLC – Common Equity Units
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		750,000	[22],[23],[27],[28]	750	[15],[17],[18],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	$ 3,454,000
Ending Balance		$ 284,000	[27],[28]	$ 3,454,000	[18],[20]
Investment, Identifier [Axis]: PIC 360, LLC—Common Equity Units
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		750
Net Realized Gain (Loss) for Period		$ 3,700,000
Amount of Investment Income		691,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		3,454,000
Gross Additions		0
Gross Reductions		0
Net Unrealized Appreciation (Depreciation)		(3,170,000)
Ending Balance		284,000		3,454,000
Investment, Identifier [Axis]: Pansophic Learning, Ltd. – Term Debt 1
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		28,000,000	[22],[23],[25],[32]	28,000,000	[15],[17],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	27,825,000
Ending Balance		$ 27,965,000	[25],[32]	$ 27,825,000	[26]
Investment, reference rate and spread		7.50%	[1],[2],[3],[5],[25],[32]	7.30%	[6],[7],[8],[10],[26]
Investment, interest rate, paid in cash		12.90%	[1],[2],[3],[5],[25],[32]	10.40%	[6],[7],[8],[10],[26]
Investment, Identifier [Axis]: Pansophic Learning, Ltd. – Term Debt 2
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		$ 5,000,000	[22],[23],[25],[32]	$ 5,000,000	[15],[17],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	4,969,000
Ending Balance		$ 4,994,000	[25],[32]	$ 4,969,000	[26]
Investment, reference rate and spread		7.50%	[1],[2],[3],[5],[25],[32]	7.30%	[6],[7],[8],[10],[26]
Investment, interest rate, paid in cash		12.90%	[1],[2],[3],[5],[25],[32]	10.40%	[6],[7],[8],[10],[26]
Investment, Identifier [Axis]: R2i Holdings, LLC – Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[38],[44]			$ 829,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[38],[44]	$ 829,000
Ending Balance	[38],[44]			$ 829,000
Investment, interest rate, paid in kind	[6],[7],[8],[10],[38],[44]			8.00%
Line of credit facility, available	[6],[7],[8],[10],[38],[44]			$ 1,171,000
Investment, Identifier [Axis]: R2i Holdings, LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[38],[44]			18,000,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[38],[44]	$ 18,000,000
Ending Balance	[38],[44]			$ 18,000,000
Investment, interest rate, paid in kind	[6],[7],[8],[10],[38],[44]			8.00%
Investment, Identifier [Axis]: Salt & Straw, LLC – Common Warrant
Investments in and Advances to Affiliates, Activity [Line Items]
Units	[22],[23],[27],[28]	0.40%
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[27],[28]	$ 31,000
Investment, Identifier [Axis]: Salt & Straw, LLC – Delayed Draw Term Loan
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		10,200,000	[22],[23],[25]	$ 0	[15],[17],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	0
Ending Balance		9,715,000	[25]	0	[26]
Line of credit facility, available		$ 1,300,000	[1],[2],[3],[5],[25]	$ 11,500,000	[6],[7],[8],[10],[26]
Investment, reference rate and spread		9.10%	[1],[2],[3],[5],[25]	8.00%	[6],[7],[8],[10],[26]
Investment, interest rate, paid in cash		14.40%	[1],[2],[3],[5],[25]	11.10%	[6],[7],[8],[10],[26]
Investment, Identifier [Axis]: Salt & Straw, LLC – Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		$ 0	[22],[23],[25]	$ 800,000	[15],[17],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	800,000
Ending Balance		0	[25]	800,000	[26]
Line of credit facility, available		$ 2,000,000	[1],[2],[3],[5],[25]	$ 1,200,000	[6],[7],[8],[10],[26]
Investment, reference rate and spread		9.10%	[1],[2],[3],[5],[25]	8.00%	[6],[7],[8],[10],[26]
Investment, interest rate, paid in cash		14.40%	[1],[2],[3],[5],[25]	11.10%	[6],[7],[8],[10],[26]
Investment, Identifier [Axis]: Salvo Technologies, Inc. – Preferred Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		2,500,000	[22],[23],[27],[28]	2,500	[15],[17],[18],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	$ 2,584,000
Ending Balance		1,225,000	[27],[28]	$ 2,584,000	[18],[20]
Investment, Identifier [Axis]: Salvo Technologies, Inc. – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		11,768,000	[22],[23],[25]	11,887,000	[15],[17],[26],[29]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26],[29]	11,619,000
Ending Balance		$ 10,900,000	[25]	$ 11,619,000	[26],[29]
Investment, reference rate and spread		9.50%	[1],[2],[3],[5],[25]	9.50%	[6],[7],[8],[10],[26],[29]
Investment, interest rate, paid in cash		14.80%	[1],[2],[3],[5],[25]	12.50%	[6],[7],[8],[10],[26],[29]
Investment, Identifier [Axis]: Sea Link International IRB, Inc. – Preferred Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		98,039,000	[22],[23],[27],[28]	98,039	[15],[17],[18],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	$ 153,000
Ending Balance		183,000	[27],[28]	$ 153,000	[18],[20]
Investment, Identifier [Axis]: Sea Link International IRB, Inc. – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[26],[38]			11,719,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26],[38]	11,074,000
Ending Balance	[26],[38]			$ 11,074,000
Investment, interest rate, paid in kind	[6],[7],[8],[10],[26],[38]			14.50%
Investment, Identifier [Axis]: Sea Link International IRB, Inc. – Term Debt 1
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[25],[36]	12,083,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[25],[36]	$ 11,675,000
Investment, interest rate, paid in kind	[1],[2],[3],[5],[25],[36]	2.00%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[25],[36]	11.30%
Investment, Identifier [Axis]: Sea Link International IRB, Inc. – Term Debt 2
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[25],[36]	$ 4,000,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[25],[36]	$ 4,000,000
Investment, interest rate, paid in kind	[1],[2],[3],[5],[25],[36]	2.00%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[25],[36]	12.00%
Investment, Identifier [Axis]: Sea Link International IRB, Inc.– Common Equity Units
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		823,333,000	[22],[23],[27],[28]	823,333	[15],[17],[18],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	$ 105,000
Ending Balance		$ 340,000	[27],[28]	$ 105,000	[18],[20]
Investment, Identifier [Axis]: Sokol & Company Holdings, LLC – Common Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		1,500,000,000	[22],[23],[27],[28]	1,500,000	[15],[17],[18],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	$ 1,500,000
Ending Balance		1,612,000	[27],[28]	$ 1,500,000	[18],[20]
Investment, Identifier [Axis]: Sokol & Company Holdings, LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[26],[29]			13,500,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26],[29]	13,500,000
Ending Balance	[26],[29]			$ 13,500,000
Investment, reference rate and spread	[6],[7],[8],[10],[26],[29]			7.00%
Investment, interest rate, paid in cash	[6],[7],[8],[10],[26],[29]			10.00%
Investment, Identifier [Axis]: Sokol & Company Holdings, LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[25]	13,500,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[25]	$ 13,095,000
Investment, reference rate and spread	[1],[2],[3],[5],[25]	7.00%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[25]	12.30%
Investment, Identifier [Axis]: SpaceCo Holdings, LLC – Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		$ 1,450,000	[22],[23],[25],[32]	$ 1,900,000	[15],[17],[26],[33]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26],[33]	1,886,000
Ending Balance		1,434,000	[25],[32]	1,886,000	[26],[33]
Line of credit facility, available		$ 550,000	[1],[2],[3],[5],[25],[32]	$ 100,000	[6],[7],[8],[10],[26],[33]
Investment, reference rate and spread		7.20%	[1],[2],[3],[5],[25],[32]	7.00%	[6],[7],[8],[10],[26],[33]
Investment, interest rate, paid in cash		12.50%	[1],[2],[3],[5],[25],[32]	10.80%	[6],[7],[8],[10],[26],[33]
Investment, Identifier [Axis]: SpaceCo Holdings, LLC – Term Deb
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[26],[33]			$ 31,719,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26],[33]	$ 31,481,000
Ending Balance	[26],[33]			$ 31,481,000
Investment, reference rate and spread	[6],[7],[8],[10],[26],[33]			7.00%
Investment, interest rate, paid in cash	[6],[7],[8],[10],[26],[33]			10.80%
Investment, Identifier [Axis]: SpaceCo Holdings, LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[25],[32]	30,284,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[25],[32]	$ 29,944,000
Investment, reference rate and spread	[1],[2],[3],[5],[25],[32]	7.20%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[25],[32]	12.50%
Investment, Identifier [Axis]: Springfield, Inc. – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		$ 30,000,000	[22],[23],[25]	$ 30,000,000	[15],[17],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	29,738,000
Ending Balance		$ 29,850,000	[25]	$ 29,738,000	[26]
Investment, reference rate and spread		10.10%	[1],[2],[3],[5],[25]	10.00%	[6],[7],[8],[10],[26]
Investment, interest rate, paid in cash		15.40%	[1],[2],[3],[5],[25]	13.10%	[6],[7],[8],[10],[26]
Investment, Identifier [Axis]: TNCP Intermediate HoldCo, LLC – Common Equity Units
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		790,000,000	[22],[23],[27],[28]	790,000	[15],[17],[18],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	$ 2,337,000
Ending Balance		3,073,000	[27],[28]	$ 2,337,000	[18],[20]
Investment, Identifier [Axis]: TNCP Intermediate HoldCo, LLC – Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		900,000	[22],[23],[27],[36]	1,000,000	[15],[17],[20],[38]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[20],[38]	1,000,000
Ending Balance		900,000	[27],[36]	1,000,000	[20],[38]
Line of credit facility, available	[6],[7],[8],[10],[20],[38]			$ 1,000,000
Investment, interest rate, paid in cash	[6],[7],[8],[10],[20],[38]			8.00%
Investment, Identifier [Axis]: TNCP Intermediate HoldCo, LLC—-Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		900,000
Net Realized Gain (Loss) for Period		0
Amount of Investment Income		75,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		1,000,000
Gross Additions		0
Gross Reductions		(100,000)
Net Unrealized Appreciation (Depreciation)		0
Ending Balance		900,000		$ 1,000,000
Line of credit facility, available	[1],[2],[3],[5],[27],[36]	$ 1,100,000
Investment, interest rate, paid in cash	[1],[2],[3],[5],[27],[36]	8.00%
Investment, Identifier [Axis]: TNCP Intermediate HoldCo, LLC—Common Equity Units
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		790,000
Net Realized Gain (Loss) for Period		$ 0
Amount of Investment Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		2,337,000
Gross Additions		0
Gross Reductions		0
Net Unrealized Appreciation (Depreciation)		736,000
Ending Balance		3,073,000		2,337,000
Investment, Identifier [Axis]: Tailwind Smith Cooper Intermediate Corporation – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		5,000,000	[21],[22],[23],[32]	5,000,000	[15],[17],[24]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[24]	4,313,000
Ending Balance		$ 4,294,000	[21],[32]	$ 4,313,000	[24]
Investment, reference rate and spread		9.00%	[1],[2],[3],[5],[21],[32]	9.00%	[6],[7],[8],[10],[24]
Investment, interest rate, paid in cash		14.40%	[1],[2],[3],[5],[21],[32]	12.10%	[6],[7],[8],[10],[24]
Investment, Identifier [Axis]: Targus Cayman HoldCo, Ltd. – Common Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares	[15],[17],[18],[44],[45]			3,076,414
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[44],[45]	$ 7,978,000
Ending Balance	[18],[44],[45]			$ 7,978,000
Investment, Identifier [Axis]: Technical Resource Management, LLC – Common Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares	[22],[23],[27],[28]	2,000,000,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[27],[28]	$ 1,415,000
Investment, Identifier [Axis]: Technical Resource Management, LLC – Delayed Draw Term Loan
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[25]	0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[25]	0
Line of credit facility, available	[1],[2],[3],[5],[25]	$ 2,500,000
Investment, reference rate and spread	[1],[2],[3],[5],[25]	8.00%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[25]	13.30%
Investment, Identifier [Axis]: Technical Resource Management, LLC – Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[25]	$ 2,000,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[25]	1,970,000
Line of credit facility, available	[1],[2],[3],[5],[25]	$ 1,000,000
Investment, reference rate and spread	[1],[2],[3],[5],[25]	8.00%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[25]	13.30%
Investment, Identifier [Axis]: Technical Resource Management, LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[25]	$ 23,000,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[25]	$ 22,655,000
Investment, reference rate and spread	[1],[2],[3],[5],[25]	8.00%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[25]	13.30%
Investment, Identifier [Axis]: Total Safety Holdings, LLC – Common Equity
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		435,000	[22],[23],[27],[28]	435	[15],[17],[18],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	$ 50,000
Ending Balance		$ 146,000	[27],[28]	$ 50,000	[18],[20]
Investment, Identifier [Axis]: Triple H Food Processors, LLC – Common Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		250,000,000	[22],[23],[27],[28]	250,000	[15],[17],[18],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	$ 672,000
Ending Balance		$ 1,641,000	[27],[28]	$ 672,000	[18],[20]
Investment, Identifier [Axis]: Triple H Food Processors, LLC – Preferred Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		75,000	[22],[23],[27],[28]	75	[15],[17],[18],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	$ 120,000
Ending Balance		141,000	[27],[28]	$ 120,000	[18],[20]
Investment, Identifier [Axis]: Trowbridge Chicago, LLC – Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[25]	0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[25]	0
Line of credit facility, available	[1],[2],[3],[5],[25]	$ 2,000,000
Investment, reference rate and spread	[1],[2],[3],[5],[25]	7.00%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[25]	12.30%
Investment, Identifier [Axis]: Trowbridge Chicago, LLC – Preferred Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares	[22],[23],[27],[28]	242,105,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[27],[28]	$ 750,000
Investment, Identifier [Axis]: Trowbridge Chicago, LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[25]	5,750,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[25]	$ 5,664,000
Investment, reference rate and spread	[1],[2],[3],[5],[25]	7.00%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[25]	12.30%
Investment, Identifier [Axis]: Turn Key Health Clinics, LLC – Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		$ 500,000	[22],[23],[25]	500,000	[15],[17],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	495,000
Ending Balance		499,000	[25]	495,000	[26]
Line of credit facility, available		$ 1,500,000	[1],[2],[3],[5],[25]	$ 1,500,000	[6],[7],[8],[10],[26]
Investment, reference rate and spread		7.30%	[1],[2],[3],[5],[25]	7.30%	[6],[7],[8],[10],[26]
Investment, interest rate, paid in cash		12.60%	[1],[2],[3],[5],[25]	10.40%	[6],[7],[8],[10],[26]
Investment, Identifier [Axis]: Turn Key Health Clinics, LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		$ 11,000,000	[22],[23],[25]	$ 11,000,000	[15],[17],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	10,890,000
Ending Balance		$ 10,986,000	[25]	$ 10,890,000	[26]
Investment, reference rate and spread		7.30%	[1],[2],[3],[5],[25]	7.30%	[6],[7],[8],[10],[26]
Investment, interest rate, paid in cash		12.60%	[1],[2],[3],[5],[25]	10.40%	[6],[7],[8],[10],[26]
Investment, Identifier [Axis]: Unirac Holdings, Inc. – Delayed Draw Term Loan
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		$ 1,108,000	[22],[23],[25]	$ 0	[15],[17],[26],[29]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26],[29]	0
Ending Balance		1,111,000	[25]	0	[26],[29]
Line of credit facility, available		$ 1,669,000	[1],[2],[3],[5],[25]	$ 2,778,000	[6],[7],[8],[10],[26],[29]
Investment, reference rate and spread		6.50%	[1],[2],[3],[5],[25]	6.50%	[6],[7],[8],[10],[26],[29]
Investment, interest rate, paid in cash		11.80%	[1],[2],[3],[5],[25]	9.50%	[6],[7],[8],[10],[26],[29]
Investment, Identifier [Axis]: Unirac Holdings, Inc. – Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		$ 978,000	[22],[23],[25]	$ 0	[15],[17],[26],[29]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26],[29]	0
Ending Balance		980,000	[25]	0	[26],[29]
Line of credit facility, available		$ 1,244,000	[1],[2],[3],[5],[25]	$ 2,222,000	[6],[7],[8],[10],[26],[29]
Investment, reference rate and spread		6.50%	[1],[2],[3],[5],[25]	6.50%	[6],[7],[8],[10],[26],[29]
Investment, interest rate, paid in cash		11.80%	[1],[2],[3],[5],[25]	9.50%	[6],[7],[8],[10],[26],[29]
Investment, Identifier [Axis]: Unirac Holdings, Inc. – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[25]	$ 14,888,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[25]	$ 14,925,000
Investment, reference rate and spread	[1],[2],[3],[5],[25]	6.50%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[25]	11.80%
Investment, Identifier [Axis]: Unirac Holdings, Inc. – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[26],[29]			$ 15,000,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26],[29]	$ 15,000,000
Ending Balance	[26],[29]			$ 15,000,000
Investment, reference rate and spread	[6],[7],[8],[10],[26],[29]			6.50%
Investment, interest rate, paid in cash	[6],[7],[8],[10],[26],[29]			9.50%
Investment, Identifier [Axis]: Viva Railings, LLC – Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		0	[22],[23],[25]	$ 0	[15],[17],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	0
Ending Balance		0	[25]	0	[26]
Line of credit facility, available		$ 4,000,000	[1],[2],[3],[5],[25]	$ 4,000,000	[6],[7],[8],[10],[26]
Investment, reference rate and spread		7.10%	[1],[2],[3],[5],[25]	7.00%	[6],[7],[8],[10],[26]
Investment, interest rate, paid in cash		12.40%	[1],[2],[3],[5],[25]	10.10%	[6],[7],[8],[10],[26]
Investment, Identifier [Axis]: Viva Railings, LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[25]	$ 20,747,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[25]	$ 20,436,000
Investment, reference rate and spread	[1],[2],[3],[5],[25]	7.10%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[25]	12.40%
Investment, Identifier [Axis]: Viva Railings, LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[26]			$ 21,800,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26]	$ 21,364,000
Ending Balance	[26]			$ 21,364,000
Investment, reference rate and spread	[6],[7],[8],[10],[26]			7.00%
Investment, interest rate, paid in cash	[6],[7],[8],[10],[26]			10.10%
Investment, Identifier [Axis]: WB Xcel Holdings, LLC - Preferred Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares	[15],[17],[18],[20]			333
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	$ 5,687,000
Ending Balance	[18],[20]			$ 5,687,000
Investment, Identifier [Axis]: WB Xcel Holdings, LLC - Preferred Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		333
Net Realized Gain (Loss) for Period		$ 0
Amount of Investment Income		0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		5,687,000
Gross Additions		0
Gross Reductions		0
Net Unrealized Appreciation (Depreciation)		(5,687,000)
Ending Balance		0		5,687,000
Investment, Identifier [Axis]: WB Xcel Holdings, LLC – Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		1,468,000	[22],[23],[27]	1,468,000	[15],[17],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[20]	1,468,000
Ending Balance		1,468,000	[27]	1,468,000	[20]
Line of credit facility, available		$ 32,000	[1],[2],[3],[5],[27]	$ 32,000	[6],[7],[8],[10],[20]
Investment, reference rate and spread		10.50%	[1],[2],[3],[5],[27]	10.50%	[6],[7],[8],[10],[20]
Investment, interest rate, paid in cash		15.80%	[1],[2],[3],[5],[27]	13.60%	[6],[7],[8],[10],[20]
Investment, Identifier [Axis]: WB Xcel Holdings, LLC – Preferred Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares	[22],[23],[27],[28]	333,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[27],[28]	$ 0
Investment, Identifier [Axis]: WB Xcel Holdings, LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[27]	9,825,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[27]	$ 9,825,000
Investment, reference rate and spread	[1],[2],[3],[5],[27]	10.50%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[27]	15.80%
Investment, Identifier [Axis]: WB Xcel Holdings, LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[20]			$ 9,925,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[20]	$ 9,925,000
Ending Balance	[20]			$ 9,925,000
Investment, reference rate and spread	[6],[7],[8],[10],[20]			10.50%
Investment, interest rate, paid in cash	[6],[7],[8],[10],[20]			13.60%
Investment, Identifier [Axis]: WB Xcel Holdings, LLC—Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		1,468,000
Net Realized Gain (Loss) for Period		0
Amount of Investment Income		226,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		1,468,000
Gross Additions		0
Gross Reductions		0
Net Unrealized Appreciation (Depreciation)		0
Ending Balance		1,468,000		$ 1,468,000
Investment, Identifier [Axis]: WB Xcel Holdings, LLC—Term Loan
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount		9,825,000
Net Realized Gain (Loss) for Period		0
Amount of Investment Income		1,514,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance		9,925,000
Gross Additions		0
Gross Reductions		(100,000)
Net Unrealized Appreciation (Depreciation)		0
Ending Balance		$ 9,825,000		$ 9,925,000
Investment, Identifier [Axis]: WorkforceQA, LLC – Common Stock
Investments in and Advances to Affiliates, Activity [Line Items]
Shares		532,000	[22],[23],[27],[28]	500	[15],[17],[18],[20]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[18],[20]	$ 456,000
Ending Balance		359,000	[27],[28]	$ 456,000	[18],[20]
Investment, Identifier [Axis]: WorkforceQA, LLC – Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[25]	400,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[25]	400,000
Line of credit facility, available	[1],[2],[3],[5],[25]	$ 1,600,000
Investment, reference rate and spread	[1],[2],[3],[5],[25]	6.50%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[25]	11.80%
Investment, Identifier [Axis]: WorkforceQA, LLC – Term Debt
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[26],[33],[46]			10,000,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26],[33],[46]	$ 9,975,000
Ending Balance	[26],[33],[46]			$ 9,975,000
Investment, reference rate and spread	[6],[7],[8],[10],[26],[33],[46]			8.50%
Investment, interest rate, paid in cash	[6],[7],[8],[10],[26],[33],[46]			11.60%
Investment, Identifier [Axis]: WorkforceQA, LLC – Term Debt 1
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[25],[47]	10,000,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[25],[47]	$ 9,987,000
Investment, reference rate and spread	[1],[2],[3],[5],[25],[47]	8.40%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[25],[47]	13.70%
Investment, Identifier [Axis]: WorkforceQA, LLC – Term Debt 2
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[22],[23],[25],[47]	$ 1,600,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Ending Balance	[25],[47]	$ 1,598,000
Investment, reference rate and spread	[1],[2],[3],[5],[25],[47]	9.30%
Investment, interest rate, paid in cash	[1],[2],[3],[5],[25],[47]	14.60%
Investment, Identifier [Axis]: WorkforceQA, LLC– Line of Credit
Investments in and Advances to Affiliates, Activity [Line Items]
Principal amount	[15],[17],[26],[33]			$ 0
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]
Beginning Balance	[26],[33]	$ 0
Ending Balance	[26],[33]			0
Line of credit facility, available	[6],[7],[8],[10],[26],[33]			$ 2,000,000
Investment, reference rate and spread	[6],[7],[8],[10],[26],[33]			6.50%
Investment, interest rate, paid in cash	[6],[7],[8],[10],[26],[33]			9.60%
[1] Certain of the securities listed in this schedule are issued by affiliate(s) of the indicated portfolio company. The majority of the securities listed, totaling $628.3 million at fair value, are pledged as collateral under our revolving line of credit, as described further in Note 5—Borrowings in the accompanying Notes to Consolidated Financial Statements. Under the Investment Company Act of 1940, as amended (the “1940 Act”), we may not acquire any non-qualifying assets unless, at the time such acquisition is made, qualifying assets represent at least 70% of our total assets. As of September 30, 2023, our investments in Leeds Novamark Capital I, L.P. (“Leeds”) and Funko Acquisition Holdings, LLC (“Funko”) are considered non-qualifying assets under Section 55 of the 1940 Act. Such non-qualifying assets represent less than 0.1% of total investments, at fair value, as of September 30, 2023. [2] Unless indicated otherwise, all of our investments are valued using Level 3 inputs within the Financial Accounting Standards Board (“FASB”) Accounting Standard Codification (“ASC”) Topic 820, “Fair Value Measurements and Disclosures” (“ASC 820”) fair value hierarchy. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information. [3] Category percentages represent the fair value of each category and subcategory as a percentage of net assets as of September 30, 2023. [4] Cumulative gross unrealized depreciation for federal income tax purposes is $56.9 million; cumulative gross unrealized appreciation for federal income tax purposes is $33.7 million. Cumulative net unrealized depreciation is $23.2 million, based on a tax cost of $728.0 million. [5] Unless indicated otherwise, all cash interest rates are indexed to one-month Secured Overnight Financing Rate (“SOFR” or “S”), which was 5.32% as of September 30, 2023. If applicable, paid-in-kind (“PIK”) interest rates are noted separately from the cash interest rate. Certain securities are subject to an interest rate floor. The cash interest rate is the greater of the floor or SOFR plus a spread. Due dates represent the contractual maturity date. [6] Unless indicated otherwise, all of our investments are valued using Level 3 inputs within the ASC 820 fair value hierarchy. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information. [7] Certain of the securities listed in this schedule are issued by affiliate(s) of the indicated portfolio company. The majority of the securities listed, totaling $577.6 million at fair value, are pledged as collateral under our revolving line of credit, as described further in Note 5—Borrowings in the accompanying Notes to Consolidated Financial Statements. Under the 1940 Act, we may not acquire any non-qualifying assets unless, at the time such acquisition is made, qualifying assets represent at least 70% of our total assets. As of September 30, 2022, our investments in Leeds and Funko are considered non-qualifying assets under Section 55 of the 1940 Act. Such non-qualifying assets represent 1.0% of total investments, at fair value, as of September 30, 2022. [8] Category percentages represent the fair value of each category and subcategory as a percentage of net assets as of September 30, 2022. [9] Cumulative gross unrealized depreciation for federal income tax purposes is $52.3 million; cumulative gross unrealized appreciation for federal income tax purposes is $35.2 million. Cumulative net unrealized depreciation is $17.1 million, based on a tax cost of $666.7 million. [10] Unless indicated otherwise, all cash interest rates are indexed to 30-day London Interbank Offered Rate (“LIBOR” or “L”), which was 3.14% as of September 30, 2022. If applicable, PIK interest rates are noted separately from the cash interest rate. Certain securities are subject to an interest rate floor. The cash interest rate is the greater of the floor or LIBOR plus a spread. Due dates represent the contractual maturity date. [11] Affiliate investments, as defined by the 1940 Act, are those in which we own, with the power to vote, between and inclusive of 5.0% and 25.0% of the issued and outstanding voting securities. [12] Affiliate investments, as defined by the 1940 Act, are those in which we own, with the power to vote, between and inclusive of 5.0% and 25.0% of the issued and outstanding voting securities. [13] Control investments, as defined by the 1940 Act, are those where we have the power to exercise a controlling influence over the management or policies of the portfolio company, which may include owning, with the power to vote, more than 25.0% of the issued and outstanding voting securities. [14] Control investments, as defined by the 1940 Act, are those where we have the power to exercise a controlling influence over the management or policies of the portfolio company, which may include owning, with the power to vote, more than 25.0% of the issued and outstanding voting securities. [15] Where applicable, aggregates all shares of a class of stock owned without regard to specific series owned within such class (some series of which may or may not be voting shares) or aggregates all warrants to purchase shares of a class of stock owned without regard to specific series of such class of stock such warrants allow us to purchase. [16] Fair value was based on net asset value provided by the fund as a practical expedient. [17] Represents the principal balance for debt investments and the number of shares/units held for equity investments. Warrants are represented as a percentage of ownership, as applicable. [18] Security is non-income producing. [19] There are certain limitations on our ability to withdraw our partnership interest prior to dissolution of the entity, which must occur no later than May 9, 2024 or two years after all outstanding leverage has matured. [20] Fair value was based on the total enterprise value of the portfolio company, which was then allocated to the portfolio company’s securities in order of their relative priority in the capital structure. [21] Fair value was based on the indicative bid price on or near September 30, 2023, offered by the respective syndication agent’s trading desk. [22] Represents the principal balance for debt investments and the number of shares/units held for equity investments. Warrants are represented as a percentage of ownership, as applicable. [23] Where applicable, aggregates all shares of a class of stock owned without regard to specific series owned within such class (some series of which may or may not be voting shares) or aggregates all warrants to purchase shares of a class of stock owned without regard to specific series of such class of stock such warrants allow us to purchase. [24] Fair value was based on the indicative bid price on or near September 30, 2022, offered by the respective syndication agent’s trading desk. [25] Fair value was based on an internal yield analysis or on estimates of value submitted by a third party valuation firm. [26] Fair value was based on an internal yield analysis or on estimates of value submitted by a third party valuation firm. [27] Fair value was based on the total enterprise value of the portfolio company, which was then allocated to the portfolio company’s securities in order of their relative priority in the capital structure. [28] Security is non-income producing. [29] The cash interest rate on this investment was indexed to the 30-day SOFR, which was 3.04% as of September 30, 2022. [30] One of our affiliated funds, Gladstone Investment Corporation, co-invested with us in this portfolio company pursuant to an exemptive order granted by the U.S. Securities and Exchange Commission. [31] One of our affiliated funds, Gladstone Investment Corporation, co-invested with us in this portfolio company pursuant to an exemptive order granted by the U.S. Securities and Exchange Commission. [32] The cash interest rate on this investment was indexed to 90-day SOFR, which was 5.40% as of September 30, 2023. [33] The cash interest rate on this investment was indexed to 90-day LIBOR, which was 3.75% as of September 30, 2022. [34] Investment maturity date has passed. Investment continues to make applicable interest payments. [35] The cash interest rate on this investment was indexed to the U.S. Prime Rate (“PRIME”), which was 6.25% as of September 30, 2022. [36] Debt security has a fixed interest rate. [37] Debt security is on non-accrual status. [38] Debt security has a fixed interest rate. [39] Our investment in Funko was valued using Level 2 inputs within ASC 820 of the fair value hierarchy. Our common units in Funko are convertible to class A common stock in Funko, Inc. upon meeting certain requirements. Fair value was based on the closing market price of shares of Funko, Inc. as of the reporting date, less a discount for lack of marketability. Funko, Inc. is traded on the Nasdaq Global Select Market under the trading symbol “FNKO.” Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information. [40] Our investment in Funko was valued using Level 2 inputs within the ASC 820 fair value hierarchy. Our common units in Funko are convertible to class A common stock in Funko, Inc. upon meeting certain requirements. Fair value was based on the closing market price of shares of Funko, Inc. as of the reporting date, less a discount for lack of marketability. Funko, Inc. is traded on the Nasdaq Global Select Market under the trading symbol “FNKO.” Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information. [41] Debt security does not have a stated interest rate that is payable thereon. [42] Fair value was based on net asset value provided by the fund as a practical expedient. [43] There are certain limitations on our ability to withdraw our partnership interest prior to dissolution of the entity, which must occur no later than May 9, 2024 or two years after all outstanding leverage has matured. [44] Fair value was based on the expected exit or payoff amount, where such event has occurred or is expected to occur imminently [45] Investment was exited subsequent to September 30, 2022. [46] The Company has entered into an agreement that entitles it to the "last out" tranche of the first lien secured loan, 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 LIBOR plus 6.50% (Floor 1.0%) per the credit agreement and the Consolidated Schedule of Investments above reflects such higher rate. [47] The Company has entered into an agreement that entitles it 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.