SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)

v3.22.4

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)		3 Months Ended
		Dec. 31, 2022 USD ($) investment loan		Dec. 31, 2021 USD ($)	Oct. 31, 2022 USD ($)	Sep. 30, 2022 USD ($)
Summary of Investment Holdings [Line Items]
Cost		$ 640,776,000				$ 656,053,000
Fair Value		621,739,000				649,615,000
Total interest income (excluding PIK interest income)		17,369,000		$ 11,729,000
PIK interest income		998,000		1,137,000
Debt Securities
Summary of Investment Holdings [Line Items]
Cost		583,477,000				595,048,000
Fair Value		567,401,000				579,841,000
OID
Summary of Investment Holdings [Line Items]
Fair Value		$ 900,000
Number of loans | loan		4
Total interest income (excluding PIK interest income)		$ 49,000		100,000
PIK
Summary of Investment Holdings [Line Items]
Number of investments | investment		6
Proceeds from interest received		$ 400,000		$ 12,000,000
Investment, Identifier [Axis]: Leeds Novamark Capital I, L.P. – Limited Partnership Interest ($843 uncalled capital commitment
Summary of Investment Holdings [Line Items]
Cost		0	[1],[2],[3],[4]			1,223,000	[5],[6],[7]
Fair Value		156,000	[1],[2],[3],[4]			6,397,000	[5],[6],[7]
Investment, Identifier [Axis]: Antenna Research Associates, Inc. – Common Equity Units
Summary of Investment Holdings [Line Items]
Cost		4,283,000	[2],[3]			4,283,000	[6],[8]
Fair Value		13,189,000	[2],[3]			13,734,000	[6],[8]
Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Common Stock
Summary of Investment Holdings [Line Items]
Cost		3,000,000	[2],[3]			3,000,000	[6],[8]
Fair Value		1,613,000	[2],[3]			1,773,000	[6],[8]
Investment, Identifier [Axis]: Leeds Novamark Capital I, L.P
Summary of Investment Holdings [Line Items]
Cost		0
Fair Value		200,000
Investment, Identifier [Axis]: Ohio Armor Holdings, LLC – Common Equity
Summary of Investment Holdings [Line Items]
Cost		1,000,000	[2],[3]			1,000,000	[6],[8]
Fair Value		749,000	[2],[3]			1,017,000	[6],[8]
Investment, Identifier [Axis]: WorkforceQA, LLC – Common Stock
Summary of Investment Holdings [Line Items]
Cost		500,000	[2],[3]			500,000	[6],[8]
Fair Value		383,000	[2],[3]			456,000	[6],[8]
Investment, Identifier [Axis]: 8th Avenue Food & Provisions, Inc. – Term Debt
Summary of Investment Holdings [Line Items]
Cost		3,698,000	[9]			3,698,000	[10]
Fair Value		1,998,000	[9]			3,020,000	[10]
Investment, Identifier [Axis]: ALS Education, LLC – Line of Credit
Summary of Investment Holdings [Line Items]
Cost		2,000,000	[11]			0	[12]
Fair Value		1,985,000	[11]			0	[12]
Investment, Identifier [Axis]: ALS Education, LLC – Term Debt
Summary of Investment Holdings [Line Items]
Cost		19,360,000	[11]			19,690,000	[12]
Fair Value		19,215,000	[11]			19,468,000	[12]
Investment, Identifier [Axis]: Antenna Research Associates, Inc. – Term Debt
Summary of Investment Holdings [Line Items]
Cost	[2]	21,892,000				21,973,000
Fair Value	[2]	21,892,000				21,973,000
Investment, Identifier [Axis]: Arc Drilling Holdings LLC – Common Stock
Summary of Investment Holdings [Line Items]
Cost		1,500,000	[2],[3]			1,500,000	[6],[8]
Fair Value		0	[2],[3]			0	[6],[8]
Investment, Identifier [Axis]: Arc Drilling Holdings LLC – Line of Credit
Summary of Investment Holdings [Line Items]
Cost		0	[11]			0	[12]
Fair Value		0	[11]			0	[12]
Investment, Identifier [Axis]: Arc Drilling Holdings LLC – Term Debt
Summary of Investment Holdings [Line Items]
Cost		5,672,000	[11]			5,625,000	[12]
Fair Value		5,480,000	[11]			5,350,000	[12]
Investment, Identifier [Axis]: Axios Industrial Group, LLC – Delayed Draw Term Loan
Summary of Investment Holdings [Line Items]
Cost	[11]	3,000,000
Fair Value	[11]	2,940,000
Investment, Identifier [Axis]: Axios Industrial Group, LLC – Term Debt
Summary of Investment Holdings [Line Items]
Cost	[12],[13]					9,000,000
Fair Value	[12],[13]					8,741,000
Investment, Identifier [Axis]: Axios Industrial Group, LLC – Term Debt
Summary of Investment Holdings [Line Items]
Cost	[11]	9,000,000
Fair Value	[11]	8,820,000
Investment, Identifier [Axis]: Axios Industrial Group, LLC– Delayed Draw Term Loan
Summary of Investment Holdings [Line Items]
Cost	[12],[13]					3,000,000
Fair Value	[12],[13]					2,914,000
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.(S) – Common Stock Warrant
Summary of Investment Holdings [Line Items]
Cost		0	[2],[3],[14]			0	[6],[8],[15]
Fair Value		0	[2],[3],[14]			25,000	[6],[8],[15]
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.(S) – Line of Credit
Summary of Investment Holdings [Line Items]
Cost		1,200,000	[11],[14]			1,200,000	[12],[15]
Fair Value		1,104,000	[11],[14]			1,146,000	[12],[15]
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.(S) – Preferred Stock
Summary of Investment Holdings [Line Items]
Cost		2,024,000	[2],[3],[14]			2,024,000	[6],[8],[15]
Fair Value		1,137,000	[2],[3],[14]			2,718,000	[6],[8],[15]
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.(S) – Term Debt
Summary of Investment Holdings [Line Items]
Cost		6,000,000	[11],[14]			6,000,000	[12],[15]
Fair Value		5,520,000	[11],[14]			5,730,000	[12],[15]
Investment, Identifier [Axis]: B. Riley Financial, Inc. – Term Debt
Summary of Investment Holdings [Line Items]
Cost		2,416,000	[16],[17]		$ 2,400,000
Fair Value	[16],[17]	2,358,000
Investment, Identifier [Axis]: CHA Holdings, Inc. – Term Debt
Summary of Investment Holdings [Line Items]
Cost		2,969,000	[9],[18]			2,967,000	[10],[19]
Fair Value		2,760,000	[9],[18]			2,700,000	[10],[19]
Investment, Identifier [Axis]: CPM Holdings, Inc. – Term Debt
Summary of Investment Holdings [Line Items]
Cost		798,000	[9]			798,000	[10]
Fair Value		778,000	[9]			758,000	[10]
Investment, Identifier [Axis]: Café Zupas – Delayed Draw Term Loan
Summary of Investment Holdings [Line Items]
Cost		1,970,000	[11]			1,970,000	[12]
Fair Value		1,970,000	[11]			1,958,000	[12]
Investment, Identifier [Axis]: Café Zupas – Line of Credit
Summary of Investment Holdings [Line Items]
Cost	[11]	0
Fair Value	[11]	0
Investment, Identifier [Axis]: Café Zupas – Line of Credit,
Summary of Investment Holdings [Line Items]
Cost	[12]					0
Fair Value	[12]					0
Investment, Identifier [Axis]: Café Zupas – Term Debt
Summary of Investment Holdings [Line Items]
Cost		23,460,000	[11]			23,460,000	[12]
Fair Value		23,460,000	[11]			23,313,000	[12]
Investment, Identifier [Axis]: Canopy Safety Brands, LLC – Common Stock
Summary of Investment Holdings [Line Items]
Cost		800,000	[2],[3]			300,000	[6],[8]
Fair Value		1,179,000	[2],[3]			647,000	[6],[8]
Investment, Identifier [Axis]: Canopy Safety Brands, LLC – Preferred Stock
Summary of Investment Holdings [Line Items]
Cost		500,000	[2],[3]			500,000	[6],[8]
Fair Value		798,000	[2],[3]			798,000	[6],[8]
Investment, Identifier [Axis]: Chinese Yellow Pages Company – Line of Credit,
Summary of Investment Holdings [Line Items]
Cost		107,000	[2],[20],[21]			107,000	[8],[22],[23]
Fair Value		0	[2],[20],[21]			0	[8],[22],[23]
Investment, Identifier [Axis]: Circuitronics EMS Holdings LLC – Common Units
Summary of Investment Holdings [Line Items]
Cost	[6],[8]					921,000
Fair Value	[6],[8]					0
Investment, Identifier [Axis]: DKI Ventures, LLC – Term Debt
Summary of Investment Holdings [Line Items]
Cost		5,915,000	[11]			5,915,000	[12]
Fair Value		4,407,000	[11]			4,554,000	[12]
Investment, Identifier [Axis]: Defiance Integrated Technologies, Inc. – Common Stock
Summary of Investment Holdings [Line Items]
Cost		580,000	[2],[3]			580,000	[6],[8]
Fair Value		71,000	[2],[3]			1,147,000	[6],[8]
Investment, Identifier [Axis]: Defiance Integrated Technologies, Inc. – Term Debt
Summary of Investment Holdings [Line Items]
Cost		7,585,000	[2]			7,665,000	[8]
Fair Value		7,585,000	[2]			7,665,000	[8]
Investment, Identifier [Axis]: ENET Holdings, LLC – Term Debt
Summary of Investment Holdings [Line Items]
Cost	[12]					24,360,000
Fair Value	[12]					23,142,000
Investment, Identifier [Axis]: ENET Holdings, LLC – Term Debt 2
Summary of Investment Holdings [Line Items]
Cost	[11]	22,289,000
Fair Value	[11]	21,620,000
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. | Debt Securities
Summary of Investment Holdings [Line Items]
Cost		$ 6,100,000				0
Cost percentage		1.10%
Fair Value		$ 2,500,000				0
Fair value percentage		0.40%
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. (S) – Term Debt
Summary of Investment Holdings [Line Items]
Cost		$ 6,140,000	[11],[14],[24]			6,140,000	[8],[15]
Fair Value		2,452,000	[11],[14],[24]			2,550,000	[8],[15]
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc.(S) – Preferred Stock
Summary of Investment Holdings [Line Items]
Cost		5,466,000	[2],[3],[14]			5,466,000	[6],[8],[15]
Fair Value		0	[2],[3],[14]			0	[6],[8],[15]
Investment, Identifier [Axis]: Eegee’s LLC – Delayed Draw Term Loan
Summary of Investment Holdings [Line Items]
Cost		3,000,000	[11]			3,000,000	[12]
Fair Value		2,865,000	[11]			2,910,000	[12]
Investment, Identifier [Axis]: Eegee’s LLC – Line of Credit
Summary of Investment Holdings [Line Items]
Cost		0	[11]			0	[12]
Fair Value		0	[11]			0	[12]
Investment, Identifier [Axis]: Eegee’s LLC – Term Debt
Summary of Investment Holdings [Line Items]
Cost	[11]	17,000,000
Fair Value	[11]	16,235,000
Investment, Identifier [Axis]: Eegee’s LLC – Term Debt
Summary of Investment Holdings [Line Items]
Cost	[12]					17,000,000
Fair Value	[12]					16,490,000
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC – Delayed Draw Term Loan
Summary of Investment Holdings [Line Items]
Cost		5,043,000	[11]			5,023,000	[12]
Fair Value		4,935,000	[11]			4,885,000	[12]
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC – Line of Credit
Summary of Investment Holdings [Line Items]
Cost		0	[11]			0	[12]
Fair Value		0	[11]			0	[12]
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC – Preferred Stock
Summary of Investment Holdings [Line Items]
Cost		3,840,000	[2],[3]			3,840,000	[6],[8],[15]
Fair Value		4,915,000	[2],[3]			2,842,000	[6],[8],[15]
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC – Term Debt 1
Summary of Investment Holdings [Line Items]
Cost		23,700,000	[11]			23,611,000	[12]
Fair Value		23,197,000	[11]			22,962,000	[12]
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC – Term Debt 2
Summary of Investment Holdings [Line Items]
Cost		4,561,000	[11]			4,532,000	[12]
Fair Value		4,464,000	[11]			4,407,000	[12]
Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Line of Credit
Summary of Investment Holdings [Line Items]
Cost		0	[11]			0	[12]
Fair Value		0	[11]			0	[12]
Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Term Debt
Summary of Investment Holdings [Line Items]
Cost	[12]					22,500,000
Fair Value	[12]					22,134,000
Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Term Debt
Summary of Investment Holdings [Line Items]
Cost	[11]	22,500,000
Fair Value	[11]	22,050,000
Investment, Identifier [Axis]: FES Resources Holdings LLC – Common Equity Units
Summary of Investment Holdings [Line Items]
Cost		0	[2],[3]			0	[6],[8]
Fair Value		0	[2],[3]			0	[6],[8]
Investment, Identifier [Axis]: FES Resources Holdings LLC – Preferred Equity Units
Summary of Investment Holdings [Line Items]
Cost		6,350,000	[2],[3]			6,350,000	[6],[8]
Fair Value		0	[2],[3]			0	[6],[8]
Investment, Identifier [Axis]: Fix-It Group, LLC – Delayed Draw Term Loan
Summary of Investment Holdings [Line Items]
Cost		3,250,000	[11]			0	[12],[19]
Fair Value		3,250,000	[11]			0	[12],[19]
Investment, Identifier [Axis]: Fix-It Group, LLC – Line of Credit
Summary of Investment Holdings [Line Items]
Cost		1,000,000	[11]			0	[12],[19]
Fair Value		1,000,000	[11]			0	[12],[19]
Investment, Identifier [Axis]: Fix-It Group, LLC – Term Debt
Summary of Investment Holdings [Line Items]
Cost		10,000,000	[11]			10,000,000	[12],[19]
Fair Value		10,000,000	[11]			9,950,000	[12],[19]
Investment, Identifier [Axis]: Frontier Financial Group Inc. – Convertible Debt
Summary of Investment Holdings [Line Items]
Cost		198,000	[2],[17]			198,000	[8],[25]
Fair Value		45,000	[2],[17]			55,000	[8],[25]
Investment, Identifier [Axis]: Frontier Financial Group Inc. – Preferred Stock
Summary of Investment Holdings [Line Items]
Cost		500,000	[2],[3]			500,000	[6],[8]
Fair Value		0	[2],[3]			0	[6],[8]
Investment, Identifier [Axis]: Frontier Financial Group Inc. – Preferred Stock Warrant
Summary of Investment Holdings [Line Items]
Cost		0	[2],[3]			0	[6],[8]
Fair Value		0	[2],[3]			0	[6],[8]
Investment, Identifier [Axis]: Funko Acquisition Holdings, LLC
Summary of Investment Holdings [Line Items]
Fair Value		31,000,000				58,000
Investment, Identifier [Axis]: Funko Acquisition Holdings, LLC(S) – Common Units
Summary of Investment Holdings [Line Items]
Cost		22,000	[3],[14],[26]			22,000	[6],[15],[27]
Fair Value		31,000	[3],[14],[26]			58,000	[6],[15],[27]
Investment, Identifier [Axis]: GFRC 360, LLC – Common Stock Warrants
Summary of Investment Holdings [Line Items]
Cost		0	[2],[3]			0	[6],[8]
Fair Value		0	[2],[3]			0	[6],[8]
Investment, Identifier [Axis]: GFRC 360, LLC – Line of Credit
Summary of Investment Holdings [Line Items]
Cost		840,000	[11]			700,000	[12]
Fair Value		803,000	[11]			681,000	[12]
Investment, Identifier [Axis]: GFRC 360, LLC – Preferred Stock
Summary of Investment Holdings [Line Items]
Cost		1,025,000	[2],[3]			1,025,000	[6],[8]
Fair Value		636,000	[2],[3]			551,000	[6],[8]
Investment, Identifier [Axis]: GFRC 360, LLC – Term Debt
Summary of Investment Holdings [Line Items]
Cost		1,000,000	[11]			1,000,000	[12]
Fair Value		956,000	[11]			973,000	[12]
Investment, Identifier [Axis]: GSM MidCo LLC – Common Stock
Summary of Investment Holdings [Line Items]
Cost		767,000	[2],[3]			767,000	[6],[8]
Fair Value		1,595,000	[2],[3]			1,359,000	[6],[8]
Investment, Identifier [Axis]: Giving Home Health Care, LLC – Term Debt
Summary of Investment Holdings [Line Items]
Cost		28,800,000	[11],[17]			28,800,000	[12],[25]
Fair Value		28,512,000	[11],[17]			28,800,000	[12],[25]
Investment, Identifier [Axis]: Giving Home Health Care, LLC – Warrant
Summary of Investment Holdings [Line Items]
Cost		19,000	[2],[3]			19,000	[6],[8]
Fair Value		446,000	[2],[3]			19,000	[6],[8]
Investment, Identifier [Axis]: Gray Matter Systems, LLC – Delayed Draw Term Loan
Summary of Investment Holdings [Line Items]
Cost		2,477,000	[11],[17]			2,476,000	[12],[25]
Fair Value		2,488,000	[11],[17]			2,481,000	[12],[25]
Investment, Identifier [Axis]: Gray Matter Systems, LLC – Term Debt
Summary of Investment Holdings [Line Items]
Cost		2,070,000	[11],[17]			2,069,000	[12],[25]
Fair Value		2,090,000	[11],[17]			2,084,000	[12],[25]
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Delayed Draw Term Loan
Summary of Investment Holdings [Line Items]
Cost		10,000,000	[11]			10,000,000	[12],[19]
Fair Value		9,950,000	[11]			9,925,000	[12],[19]
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Line of Credit
Summary of Investment Holdings [Line Items]
Cost		1,500,000	[11]			1,500,000	[12],[19]
Fair Value		1,493,000	[11]			1,489,000	[12],[19]
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Preferred Stock
Summary of Investment Holdings [Line Items]
Cost		956,000	[2],[3]			956,000	[6],[8]
Fair Value		914,000	[2],[3]			945,000	[6],[8]
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Term Debt 1
Summary of Investment Holdings [Line Items]
Cost		16,000,000	[11]			16,000,000	[12],[19]
Fair Value		15,920,000	[11]			15,880,000	[12],[19]
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Term Debt 2
Summary of Investment Holdings [Line Items]
Cost		8,000,000	[11]			8,000,000	[12],[19]
Fair Value		7,960,000	[11]			7,940,000	[12],[19]
Investment, Identifier [Axis]: Imperative Holdings Corporation – Preferred Equity Units
Summary of Investment Holdings [Line Items]
Cost		632,000	[2],[3]			632,000	[6],[8]
Fair Value		1,954,000	[2],[3]			2,028,000	[6],[8]
Investment, Identifier [Axis]: Imperative Holdings Corporation – Term Debt
Summary of Investment Holdings [Line Items]
Cost		23,225,000	[11]			23,968,000	[12]
Fair Value		22,916,000	[11]			23,295,000	[12]
Investment, Identifier [Axis]: LWO Acquisitions Company LLC – Term Debt
Summary of Investment Holdings [Line Items]
Cost	[8],[28]					95,000
Fair Value	[8],[28]					0
Investment, Identifier [Axis]: Leeds Acquisition Holdings, LLC
Summary of Investment Holdings [Line Items]
Fair Value		200,000				6,400,000
Investment, Identifier [Axis]: Lonestar EMS, LLC – Term Debt
Summary of Investment Holdings [Line Items]
Cost	[2],[17]	3,695,000
Fair Value	[2],[17]	3,396,000
Investment, Identifier [Axis]: Lonestar EMS, LLC – Common Units
Summary of Investment Holdings [Line Items]
Cost		6,750,000	[2],[3]			6,750,000	[6],[8]
Fair Value		0	[2],[3]			0	[6],[8]
Investment, Identifier [Axis]: Lonestar EMS, LLC – Term Debt
Summary of Investment Holdings [Line Items]
Cost	[8],[25]					3,250,000
Fair Value	[8],[25]					3,030,000
Investment, Identifier [Axis]: MCG Energy Solutions, LLC – Line of Credit
Summary of Investment Holdings [Line Items]
Cost	[12]					0
Fair Value	[12]					0
Investment, Identifier [Axis]: MCG Energy Solutions, LLC – Preferred Stock
Summary of Investment Holdings [Line Items]
Cost		7,000,000	[2]			7,000,000	[8]
Fair Value		7,972,000	[2]			8,151,000	[8]
Investment, Identifier [Axis]: MCG Energy Solutions, LLC – Term Debt
Summary of Investment Holdings [Line Items]
Cost		20,455,000	[11]			20,820,000	[12]
Fair Value		19,325,000	[11]			19,779,000	[12]
Investment, Identifier [Axis]: NetFortris Corp. – Preferred Stock
Summary of Investment Holdings [Line Items]
Cost		789,000	[2],[3]			789,000	[6],[8]
Fair Value		264,000	[2],[3]			469,000	[6],[8]
Investment, Identifier [Axis]: Ohio Armor Holdings, LLC – Term Debt
Summary of Investment Holdings [Line Items]
Cost		18,619,000	[11]			18,913,000	[12]
Fair Value		18,223,000	[11]			18,558,000	[12]
Investment, Identifier [Axis]: PIC 360, LLC – Common Equity Units
Summary of Investment Holdings [Line Items]
Cost		1,000	[2],[3]			1,000	[6],[8]
Fair Value		3,603,000	[2],[3]			3,454,000	[6],[8]
Investment, Identifier [Axis]: Pansophic Learning, Ltd. – Term Debt 1
Summary of Investment Holdings [Line Items]
Cost		27,963,000	[11]			27,961,000	[12]
Fair Value		27,930,000	[11]			27,825,000	[12]
Investment, Identifier [Axis]: Pansophic Learning, Ltd. – Term Debt 2
Summary of Investment Holdings [Line Items]
Cost		4,993,000	[11]			4,993,000	[12]
Fair Value		4,988,000	[11]			4,969,000	[12]
Investment, Identifier [Axis]: R2i Holdings, LLC – Line of Credit
Summary of Investment Holdings [Line Items]
Cost	[25],[29]					829,000
Fair Value	[25],[29]					829,000
Investment, Identifier [Axis]: R2i Holdings, LLC – Term Debt
Summary of Investment Holdings [Line Items]
Cost	[25],[29]					18,000,000
Fair Value	[25],[29]					18,000,000
Investment, Identifier [Axis]: Salt & Straw, LLC – Delayed Draw Term Loan
Summary of Investment Holdings [Line Items]
Cost		2,200,000	[11]			0	[12]
Fair Value		2,145,000	[11]			0	[12]
Investment, Identifier [Axis]: Salt & Straw, LLC – Line of Credit
Summary of Investment Holdings [Line Items]
Cost		800,000	[11]			800,000	[12]
Fair Value		780,000	[11]			800,000	[12]
Investment, Identifier [Axis]: Salvo Technologies, Inc. – Preferred Stock
Summary of Investment Holdings [Line Items]
Cost		2,500,000	[2],[3]			2,500,000	[6],[8]
Fair Value		1,430,000	[2],[3]			2,584,000	[6],[8]
Investment, Identifier [Axis]: Salvo Technologies, Inc. – Term Debt
Summary of Investment Holdings [Line Items]
Cost	[12],[13]					11,887,000
Fair Value	[12],[13]					11,619,000
Investment, Identifier [Axis]: Salvo Technologies, Inc. – Term Debt
Summary of Investment Holdings [Line Items]
Cost	[11]	11,857,000
Fair Value	[11]	11,264,000
Investment, Identifier [Axis]: Sea Link International IRB, Inc. – Preferred Stock
Summary of Investment Holdings [Line Items]
Cost		98,000	[2],[3]			98,000	[6],[8]
Fair Value		160,000	[2],[3]			153,000	[6],[8]
Investment, Identifier [Axis]: Sea Link International IRB, Inc. – Term Debt
Summary of Investment Holdings [Line Items]
Cost		11,863,000	[11],[17]			11,679,000	[12],[25]
Fair Value		11,484,000	[11],[17]			11,074,000	[12],[25]
Investment, Identifier [Axis]: Sea Link International IRB, Inc.– Common Equity Units
Summary of Investment Holdings [Line Items]
Cost		823,000	[2],[3]			823,000	[6],[8]
Fair Value		169,000	[2],[3]			105,000	[6],[8]
Investment, Identifier [Axis]: Sokol & Company Holdings, LLC – Common Stock
Summary of Investment Holdings [Line Items]
Cost		1,500,000	[2],[3]			1,500,000	[6],[8]
Fair Value		1,701,000	[2],[3]			1,500,000	[6],[8]
Investment, Identifier [Axis]: Sokol & Company Holdings, LLC – Term Debt
Summary of Investment Holdings [Line Items]
Cost	[12],[13]					13,500,000
Fair Value	[12],[13]					13,500,000
Investment, Identifier [Axis]: Sokol & Company Holdings, LLC – Term Debt
Summary of Investment Holdings [Line Items]
Cost	[11]	13,500,000
Fair Value	[11]	13,264,000
Investment, Identifier [Axis]: SpaceCo Holdings, LLC – Line of Credit
Summary of Investment Holdings [Line Items]
Cost		1,650,000	[11],[18]			1,900,000	[12],[19]
Fair Value		1,625,000	[11],[18]			1,886,000	[12],[19]
Investment, Identifier [Axis]: SpaceCo Holdings, LLC – Term Deb
Summary of Investment Holdings [Line Items]
Cost	[12],[19]					31,326,000
Fair Value	[12],[19]					31,481,000
Investment, Identifier [Axis]: SpaceCo Holdings, LLC – Term Debt
Summary of Investment Holdings [Line Items]
Cost	[11],[18]	30,538,000
Fair Value	[11],[18]	30,440,000
Investment, Identifier [Axis]: Springfield, Inc. – Term Debt
Summary of Investment Holdings [Line Items]
Cost		30,000,000	[11]			30,000,000	[12]
Fair Value		29,850,000	[11]			29,738,000	[12]
Investment, Identifier [Axis]: TNCP Intermediate HoldCo, LLC – Common Equity Units
Summary of Investment Holdings [Line Items]
Cost		500,000	[2],[3]			500,000	[6],[8]
Fair Value		2,594,000	[2],[3]			2,337,000	[6],[8]
Investment, Identifier [Axis]: TNCP Intermediate HoldCo, LLC – Line of Credit
Summary of Investment Holdings [Line Items]
Cost		900,000	[2],[17]			1,000,000	[8],[25]
Fair Value		900,000	[2],[17]			1,000,000	[8],[25]
Investment, Identifier [Axis]: Tailwind Smith Cooper Intermediate Corporation – Term Debt
Summary of Investment Holdings [Line Items]
Cost		4,835,000	[9]			4,829,000	[10]
Fair Value		4,294,000	[9]			4,313,000	[10]
Investment, Identifier [Axis]: Targus Cayman HoldCo, Ltd. – Common Stock
Summary of Investment Holdings [Line Items]
Cost	[6],[29],[30]					2,062,000
Fair Value	[6],[29],[30]					7,978,000
Investment, Identifier [Axis]: Total Safety Holdings, LLC – Common Equity
Summary of Investment Holdings [Line Items]
Cost		499,000	[2],[3]			499,000	[6],[8]
Fair Value		44,000	[2],[3]			50,000	[6],[8]
Investment, Identifier [Axis]: Triple H Food Processors, LLC – Common Stock
Summary of Investment Holdings [Line Items]
Cost		250,000	[2],[3]			250,000	[6],[8]
Fair Value		675,000	[2],[3]			672,000	[6],[8]
Investment, Identifier [Axis]: Triple H Food Processors, LLC – Preferred Stock
Summary of Investment Holdings [Line Items]
Cost		75,000	[2],[3]			75,000	[6],[8]
Fair Value		125,000	[2],[3]			120,000	[6],[8]
Investment, Identifier [Axis]: Turn Key Health Clinics, LLC – Line of Credit
Summary of Investment Holdings [Line Items]
Cost		500,000	[11]			500,000	[12]
Fair Value		498,000	[11]			495,000	[12]
Investment, Identifier [Axis]: Turn Key Health Clinics, LLC – Term Debt
Summary of Investment Holdings [Line Items]
Cost		11,000,000	[11]			11,000,000	[12]
Fair Value		10,945,000	[11]			10,890,000	[12]
Investment, Identifier [Axis]: Unirac Holdings, Inc. – Delayed Draw Term Loan
Summary of Investment Holdings [Line Items]
Cost	[12],[13]					0
Fair Value	[12],[13]					0
Investment, Identifier [Axis]: Unirac Holdings, Inc. – Line of Credit
Summary of Investment Holdings [Line Items]
Cost	[12],[13]					0
Fair Value	[12],[13]					0
Investment, Identifier [Axis]: Unirac Holdings, Inc. – Term Debt
Summary of Investment Holdings [Line Items]
Cost	[12],[13]					14,628,000
Fair Value	[12],[13]					15,000,000
Investment, Identifier [Axis]: Unirac, Inc. – Delayed Draw Term Loan
Summary of Investment Holdings [Line Items]
Cost	[11]	0
Fair Value	[11]	0
Investment, Identifier [Axis]: Unirac, Inc. – Line of Credit
Summary of Investment Holdings [Line Items]
Cost	[11]	700,000
Fair Value	[11]	703,000
Investment, Identifier [Axis]: Unirac, Inc. – Term Debt
Summary of Investment Holdings [Line Items]
Cost	[11]	14,606,000
Fair Value	[11]	15,019,000
Investment, Identifier [Axis]: Viva Railings, LLC – Line of Credit
Summary of Investment Holdings [Line Items]
Cost		0	[11]			0	[12]
Fair Value		0	[11]			0	[12]
Investment, Identifier [Axis]: Viva Railings, LLC – Term Debt
Summary of Investment Holdings [Line Items]
Cost	[11]	21,800,000
Fair Value	[11]	21,500,000
Investment, Identifier [Axis]: Viva Railings, LLC – Term Debt
Summary of Investment Holdings [Line Items]
Cost	[12]					21,800,000
Fair Value	[12]					21,364,000
Investment, Identifier [Axis]: WB Xcel Holdings, LLC
Summary of Investment Holdings [Line Items]
Cost		2,750,000	[2],[3]			2,750,000	[6],[8]
Fair Value		5,835,000	[2],[3]			5,687,000	[6],[8]
Investment, Identifier [Axis]: WB Xcel Holdings, LLC – Line of Credit
Summary of Investment Holdings [Line Items]
Cost		1,468,000	[2]			1,468,000	[8]
Fair Value		1,468,000	[2]			1,468,000	[8]
Investment, Identifier [Axis]: WB Xcel Holdings, LLC – Term Debt
Summary of Investment Holdings [Line Items]
Cost		9,900,000	[2]			9,925,000	[8]
Fair Value		9,900,000	[2]			9,925,000	[8]
Investment, Identifier [Axis]: WorkforceQA, LLC – Line of Credit
Summary of Investment Holdings [Line Items]
Cost	[11]	0
Fair Value	[11]	0
Investment, Identifier [Axis]: WorkforceQA, LLC – Term Debt
Summary of Investment Holdings [Line Items]
Cost		10,000,000	[11],[31]			10,000,000	[12],[19],[32]
Fair Value		$ 9,987,000	[11],[31]			9,975,000	[12],[19],[32]
Investment, Identifier [Axis]: WorkforceQA, LLC– Line of Credit
Summary of Investment Holdings [Line Items]
Cost	[12],[19]					0
Fair Value	[12],[19]					$ 0
[1] Fair value was based on net asset value provided by the fund as a practical expedient. [2] 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. [3] Security is non-income producing. [4] 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. [5] Fair value was based on net asset value provided by the fund as a practical expedient. [6] Security is non-income producing. [7] 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. [8] 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. [9] Fair value was based on the indicative bid price on or near December 31, 2022, offered by the respective syndication agent’s trading desk. [10] Fair value was based on the indicative bid price on or near September 30, 2022, offered by the respective syndication agent’s trading desk. [11] Fair value was based on an internal yield analysis or on estimates of value submitted by ICE Data Pricing and Reference Data, LLC (“ICE”). [12] Fair value was based on an internal yield analysis or on estimates of value submitted by ICE Data Pricing and Reference Data, LLC (“ICE”). [13] The cash interest rate on this investment was indexed to the 30-day Secured Overnight Financing Rate (“SOFR”), which was 3.04% as of September 30, 2022. [14] 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. [15] 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. [16] Our investment in B. Riley was valued using Level 1 inputs within the ASC 820 fair value hierarchy. B. Riley 6.75% senior notes are traded on the Nasdaq Global Select Market under the trading symbol “RILYO.” Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information. [17] Debt security has a fixed interest rate. [18] The cash interest rate on this investment was indexed to 90-day LIBOR, which was 4.77% as of December 31, 2022. [19] The cash interest rate on this investment was indexed to 90-day LIBOR, which was 3.75% as of September 30, 2022. [20] Investment maturity date has passed. Investment continues to make applicable interest payments. [21] The cash interest rate on this investment was indexed to the U.S. Prime Rate (“PRIME”), which was 7.50% as of December 31, 2022. [22] Investment maturity date has passed. Investment continues to make applicable interest payments. [23] 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. [24] Debt security is on non-accrual status. [25] Debt security has a fixed interest rate. [26] Our investment in Funko was valued using Level 2 inputs within the Financial Accounting Standards Board (“FASB”) Accounting Standard Codification (“ASC”) Topic 820, “Fair Value Measurements and Disclosures” (“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. [27] Our investment in Funko was valued using Level 2 inputs within the Financial Accounting Standards Board (“FASB”) Accounting Standard Codification (“ASC”) Topic 820, “Fair Value Measurements and Disclosures" (“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. [28] Debt security does not have a stated interest rate that is payable thereon. [29] Fair value was based on the expected exit or payoff amount, where such event has occurred or is expected to occur imminently. [30] Investment was exited subsequent to September 30, 2022. Refer to Note 15 – Subsequent Events in the accompanying Notes to the Consolidated Financial Statements for additional information. [31] 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. Therefore, the Company receives a higher interest rate than the contractual stated interest rate of LIBOR plus 6.5% (Floor 1.0%) per the credit agreement and the Consolidated Schedule of Investments above reflects such higher rate. [32] 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.