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INVESTMENTS - Fair Value Measurement Inputs and Valuation Techniques (Details) $ in Thousands | Dec. 31, 2022 USD ($) | Sep. 30, 2022 USD ($)
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Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | $ 621,739 |  | $ 649,615 |
Investment, Identifier [Axis]: Leeds Novamark Capital I, L.P. – Limited Partnership Interest ($843 uncalled capital commitment |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 156 | [1],[2],[3],[4] | 6,397 | [5],[6],[7]
Investment, Identifier [Axis]: Antenna Research Associates, Inc. – Common Equity Units |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 13,189 | [2],[3] | 13,734 | [6],[8]
Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Common Stock |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 1,613 | [2],[3] | 1,773 | [6],[8]
Investment, Identifier [Axis]: Leeds Novamark Capital I, L.P |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 200 |  |  |
Investment, Identifier [Axis]: Ohio Armor Holdings, LLC – Common Equity |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 749 | [2],[3] | 1,017 | [6],[8]
Investment, Identifier [Axis]: WorkforceQA, LLC – Common Stock |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 383 | [2],[3] | 456 | [6],[8]
Investment, Identifier [Axis]: 8th Avenue Food & Provisions, Inc. – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 1,998 | [9] | 3,020 | [10]
Investment, Identifier [Axis]: ALS Education, LLC – Line of Credit |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 1,985 | [11] | 0 | [12]
Investment, Identifier [Axis]: ALS Education, LLC – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 19,215 | [11] | 19,468 | [12]
Investment, Identifier [Axis]: Antenna Research Associates, Inc. – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [2] | 21,892 |  | 21,973 |
Investment, Identifier [Axis]: Arc Drilling Holdings LLC – Common Stock |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 0 | [2],[3] | 0 | [6],[8]
Investment, Identifier [Axis]: Arc Drilling Holdings LLC – Line of Credit |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 0 | [11] | 0 | [12]
Investment, Identifier [Axis]: Arc Drilling Holdings LLC – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 5,480 | [11] | 5,350 | [12]
Investment, Identifier [Axis]: Axios Industrial Group, LLC – Delayed Draw Term Loan |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [11] | 2,940 |  |  |
Investment, Identifier [Axis]: Axios Industrial Group, LLC – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [12],[13] |  |  | 8,741 |
Investment, Identifier [Axis]: Axios Industrial Group, LLC – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [11] | 8,820 |  |  |
Investment, Identifier [Axis]: Axios Industrial Group, LLC– Delayed Draw Term Loan |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [12],[13] |  |  | 2,914 |
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.(S) – Common Stock Warrant |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 0 | [2],[3],[14] | 25 | [6],[8],[15]
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.(S) – Line of Credit |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 1,104 | [11],[14] | 1,146 | [12],[15]
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.(S) – Preferred Stock |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 1,137 | [2],[3],[14] | 2,718 | [6],[8],[15]
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.(S) – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 5,520 | [11],[14] | 5,730 | [12],[15]
Investment, Identifier [Axis]: B. Riley Financial, Inc. – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [16],[17] | 2,358 |  |  |
Investment, Identifier [Axis]: CHA Holdings, Inc. – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 2,760 | [9],[18] | 2,700 | [10],[19]
Investment, Identifier [Axis]: CPM Holdings, Inc. – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 778 | [9] | 758 | [10]
Investment, Identifier [Axis]: Café Zupas – Delayed Draw Term Loan |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 1,970 | [11] | 1,958 | [12]
Investment, Identifier [Axis]: Café Zupas – Line of Credit |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [11] | 0 |  |  |
Investment, Identifier [Axis]: Café Zupas – Line of Credit, |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [12] |  |  | 0 |
Investment, Identifier [Axis]: Café Zupas – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 23,460 | [11] | 23,313 | [12]
Investment, Identifier [Axis]: Canopy Safety Brands, LLC – Common Stock |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 1,179 | [2],[3] | 647 | [6],[8]
Investment, Identifier [Axis]: Canopy Safety Brands, LLC – Preferred Stock |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 798 | [2],[3] | 798 | [6],[8]
Investment, Identifier [Axis]: Chinese Yellow Pages Company – Line of Credit, |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 0 | [2],[20],[21] | 0 | [8],[22],[23]
Investment, Identifier [Axis]: Circuitronics EMS Holdings LLC – Common Units |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [6],[8] |  |  | 0 |
Investment, Identifier [Axis]: DKI Ventures, LLC – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 4,407 | [11] | 4,554 | [12]
Investment, Identifier [Axis]: Defiance Integrated Technologies, Inc. – Common Stock |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 71 | [2],[3] | 1,147 | [6],[8]
Investment, Identifier [Axis]: Defiance Integrated Technologies, Inc. – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 7,585 | [2] | 7,665 | [8]
Investment, Identifier [Axis]: ENET Holdings, LLC – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [12] |  |  | 23,142 |
Investment, Identifier [Axis]: ENET Holdings, LLC – Term Debt 2 |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [11] | 21,620 |  |  |
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. (S) – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 2,452 | [11],[14],[24] | 2,550 | [8],[15]
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc.(S) – Preferred Stock |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 0 | [2],[3],[14] | 0 | [6],[8],[15]
Investment, Identifier [Axis]: Eegee’s LLC – Delayed Draw Term Loan |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 2,865 | [11] | 2,910 | [12]
Investment, Identifier [Axis]: Eegee’s LLC – Line of Credit |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 0 | [11] | 0 | [12]
Investment, Identifier [Axis]: Eegee’s LLC – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [11] | 16,235 |  |  |
Investment, Identifier [Axis]: Eegee’s LLC – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [12] |  |  | 16,490 |
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC – Delayed Draw Term Loan |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 4,935 | [11] | 4,885 | [12]
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC – Line of Credit |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 0 | [11] | 0 | [12]
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC – Preferred Stock |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 4,915 | [2],[3] | 2,842 | [6],[8],[15]
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC – Term Debt 1 |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 23,197 | [11] | 22,962 | [12]
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC – Term Debt 2 |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 4,464 | [11] | 4,407 | [12]
Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Line of Credit |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 0 | [11] | 0 | [12]
Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [12] |  |  | 22,134 |
Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [11] | 22,050 |  |  |
Investment, Identifier [Axis]: FES Resources Holdings LLC – Common Equity Units |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 0 | [2],[3] | 0 | [6],[8]
Investment, Identifier [Axis]: FES Resources Holdings LLC – Preferred Equity Units |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 0 | [2],[3] | 0 | [6],[8]
Investment, Identifier [Axis]: Fix-It Group, LLC – Delayed Draw Term Loan |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 3,250 | [11] | 0 | [12],[19]
Investment, Identifier [Axis]: Fix-It Group, LLC – Line of Credit |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 1,000 | [11] | 0 | [12],[19]
Investment, Identifier [Axis]: Fix-It Group, LLC – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 10,000 | [11] | 9,950 | [12],[19]
Investment, Identifier [Axis]: Frontier Financial Group Inc. – Convertible Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 45 | [2],[17] | 55 | [8],[25]
Investment, Identifier [Axis]: Frontier Financial Group Inc. – Preferred Stock |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 0 | [2],[3] | 0 | [6],[8]
Investment, Identifier [Axis]: Frontier Financial Group Inc. – Preferred Stock Warrant |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 0 | [2],[3] | 0 | [6],[8]
Investment, Identifier [Axis]: Funko Acquisition Holdings, LLC |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 31,000 |  | 58 |
Investment, Identifier [Axis]: Funko Acquisition Holdings, LLC(S) – Common Units |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 31 | [3],[14],[26] | 58 | [6],[15],[27]
Investment, Identifier [Axis]: GFRC 360, LLC – Common Stock Warrants |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 0 | [2],[3] | 0 | [6],[8]
Investment, Identifier [Axis]: GFRC 360, LLC – Line of Credit |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 803 | [11] | 681 | [12]
Investment, Identifier [Axis]: GFRC 360, LLC – Preferred Stock |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 636 | [2],[3] | 551 | [6],[8]
Investment, Identifier [Axis]: GFRC 360, LLC – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 956 | [11] | 973 | [12]
Investment, Identifier [Axis]: GSM MidCo LLC – Common Stock |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 1,595 | [2],[3] | 1,359 | [6],[8]
Investment, Identifier [Axis]: Giving Home Health Care, LLC – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 28,512 | [11],[17] | 28,800 | [12],[25]
Investment, Identifier [Axis]: Giving Home Health Care, LLC – Warrant |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 446 | [2],[3] | 19 | [6],[8]
Investment, Identifier [Axis]: Gray Matter Systems, LLC – Delayed Draw Term Loan |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 2,488 | [11],[17] | 2,481 | [12],[25]
Investment, Identifier [Axis]: Gray Matter Systems, LLC – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 2,090 | [11],[17] | 2,084 | [12],[25]
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Delayed Draw Term Loan |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 9,950 | [11] | 9,925 | [12],[19]
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Line of Credit |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 1,493 | [11] | 1,489 | [12],[19]
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Preferred Stock |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 914 | [2],[3] | 945 | [6],[8]
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Term Debt 1 |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 15,920 | [11] | 15,880 | [12],[19]
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Term Debt 2 |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 7,960 | [11] | 7,940 | [12],[19]
Investment, Identifier [Axis]: Imperative Holdings Corporation – Preferred Equity Units |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 1,954 | [2],[3] | 2,028 | [6],[8]
Investment, Identifier [Axis]: Imperative Holdings Corporation – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 22,916 | [11] | 23,295 | [12]
Investment, Identifier [Axis]: LWO Acquisitions Company LLC – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [8],[28] |  |  | 0 |
Investment, Identifier [Axis]: Leeds Acquisition Holdings, LLC |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 200 |  | 6,400 |
Investment, Identifier [Axis]: Lonestar EMS, LLC – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [2],[17] | 3,396 |  |  |
Investment, Identifier [Axis]: Lonestar EMS, LLC – Common Units |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 0 | [2],[3] | 0 | [6],[8]
Investment, Identifier [Axis]: Lonestar EMS, LLC – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [8],[25] |  |  | 3,030 |
Investment, Identifier [Axis]: MCG Energy Solutions, LLC – Line of Credit |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [12] |  |  | 0 |
Investment, Identifier [Axis]: MCG Energy Solutions, LLC – Preferred Stock |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 7,972 | [2] | 8,151 | [8]
Investment, Identifier [Axis]: MCG Energy Solutions, LLC – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 19,325 | [11] | 19,779 | [12]
Investment, Identifier [Axis]: NetFortris Corp. – Preferred Stock |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 264 | [2],[3] | 469 | [6],[8]
Investment, Identifier [Axis]: Ohio Armor Holdings, LLC – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 18,223 | [11] | 18,558 | [12]
Investment, Identifier [Axis]: PIC 360, LLC – Common Equity Units |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 3,603 | [2],[3] | 3,454 | [6],[8]
Investment, Identifier [Axis]: Pansophic Learning, Ltd. – Term Debt 1 |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 27,930 | [11] | 27,825 | [12]
Investment, Identifier [Axis]: Pansophic Learning, Ltd. – Term Debt 2 |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 4,988 | [11] | 4,969 | [12]
Investment, Identifier [Axis]: R2i Holdings, LLC – Line of Credit |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [25],[29] |  |  | 829 |
Investment, Identifier [Axis]: R2i Holdings, LLC – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [25],[29] |  |  | 18,000 |
Investment, Identifier [Axis]: Salt & Straw, LLC – Delayed Draw Term Loan |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 2,145 | [11] | 0 | [12]
Investment, Identifier [Axis]: Salt & Straw, LLC – Line of Credit |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 780 | [11] | 800 | [12]
Investment, Identifier [Axis]: Salvo Technologies, Inc. – Preferred Stock |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 1,430 | [2],[3] | 2,584 | [6],[8]
Investment, Identifier [Axis]: Salvo Technologies, Inc. – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [12],[13] |  |  | 11,619 |
Investment, Identifier [Axis]: Salvo Technologies, Inc. – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [11] | 11,264 |  |  |
Investment, Identifier [Axis]: Sea Link International IRB, Inc. – Preferred Stock |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 160 | [2],[3] | 153 | [6],[8]
Investment, Identifier [Axis]: Sea Link International IRB, Inc. – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 11,484 | [11],[17] | 11,074 | [12],[25]
Investment, Identifier [Axis]: Sea Link International IRB, Inc.– Common Equity Units |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 169 | [2],[3] | 105 | [6],[8]
Investment, Identifier [Axis]: Sokol & Company Holdings, LLC – Common Stock |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 1,701 | [2],[3] | 1,500 | [6],[8]
Investment, Identifier [Axis]: Sokol & Company Holdings, LLC – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [12],[13] |  |  | 13,500 |
Investment, Identifier [Axis]: Sokol & Company Holdings, LLC – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [11] | 13,264 |  |  |
Investment, Identifier [Axis]: SpaceCo Holdings, LLC – Line of Credit |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 1,625 | [11],[18] | 1,886 | [12],[19]
Investment, Identifier [Axis]: SpaceCo Holdings, LLC – Term Deb |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [12],[19] |  |  | 31,481 |
Investment, Identifier [Axis]: SpaceCo Holdings, LLC – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [11],[18] | 30,440 |  |  |
Investment, Identifier [Axis]: Springfield, Inc. – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 29,850 | [11] | 29,738 | [12]
Investment, Identifier [Axis]: TNCP Intermediate HoldCo, LLC – Common Equity Units |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 2,594 | [2],[3] | 2,337 | [6],[8]
Investment, Identifier [Axis]: TNCP Intermediate HoldCo, LLC – Line of Credit |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 900 | [2],[17] | 1,000 | [8],[25]
Investment, Identifier [Axis]: Tailwind Smith Cooper Intermediate Corporation – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 4,294 | [9] | 4,313 | [10]
Investment, Identifier [Axis]: Targus Cayman HoldCo, Ltd. – Common Stock |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [6],[29],[30] |  |  | 7,978 |
Investment, Identifier [Axis]: Total Safety Holdings, LLC – Common Equity |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 44 | [2],[3] | 50 | [6],[8]
Investment, Identifier [Axis]: Triple H Food Processors, LLC – Common Stock |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 675 | [2],[3] | 672 | [6],[8]
Investment, Identifier [Axis]: Triple H Food Processors, LLC – Preferred Stock |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 125 | [2],[3] | 120 | [6],[8]
Investment, Identifier [Axis]: Turn Key Health Clinics, LLC – Line of Credit |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 498 | [11] | 495 | [12]
Investment, Identifier [Axis]: Turn Key Health Clinics, LLC – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 10,945 | [11] | 10,890 | [12]
Investment, Identifier [Axis]: Unirac Holdings, Inc. – Delayed Draw Term Loan |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [12],[13] |  |  | 0 |
Investment, Identifier [Axis]: Unirac Holdings, Inc. – Line of Credit |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [12],[13] |  |  | 0 |
Investment, Identifier [Axis]: Unirac Holdings, Inc. – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [12],[13] |  |  | 15,000 |
Investment, Identifier [Axis]: Unirac, Inc. – Delayed Draw Term Loan |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [11] | 0 |  |  |
Investment, Identifier [Axis]: Unirac, Inc. – Line of Credit |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [11] | 703 |  |  |
Investment, Identifier [Axis]: Unirac, Inc. – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [11] | 15,019 |  |  |
Investment, Identifier [Axis]: Viva Railings, LLC – Line of Credit |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 0 | [11] | 0 | [12]
Investment, Identifier [Axis]: Viva Railings, LLC – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [11] | 21,500 |  |  |
Investment, Identifier [Axis]: Viva Railings, LLC – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [12] |  |  | 21,364 |
Investment, Identifier [Axis]: WB Xcel Holdings, LLC |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 5,835 | [2],[3] | 5,687 | [6],[8]
Investment, Identifier [Axis]: WB Xcel Holdings, LLC – Line of Credit |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 1,468 | [2] | 1,468 | [8]
Investment, Identifier [Axis]: WB Xcel Holdings, LLC – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 9,900 | [2] | 9,925 | [8]
Investment, Identifier [Axis]: WorkforceQA, LLC – Line of Credit |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [11] | 0 |  |  |
Investment, Identifier [Axis]: WorkforceQA, LLC – Term Debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 9,987 | [11],[31] | 9,975 | [12],[19],[32]
Investment, Identifier [Axis]: WorkforceQA, LLC– Line of Credit |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value | [12],[19] |  |  | 0 |
Significant Unobservable Inputs (Level 3) |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 619,194 |  | 643,160 |
Significant Unobservable Inputs (Level 3) | Yield Analysis | Secured first lien debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 410,235 |  | 423,912 |
Significant Unobservable Inputs (Level 3) | Yield Analysis | Secured second lien debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | $ 97,340 |  | $ 97,472 |
Significant Unobservable Inputs (Level 3) | Yield Analysis | Discount Rate | Secured first lien debt | Minimum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Fair value, measurement input |  | 0.107 |  | 0.080 |
Significant Unobservable Inputs (Level 3) | Yield Analysis | Discount Rate | Secured first lien debt | Maximum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Fair value, measurement input |  | 0.349 |  | 0.295 |
Significant Unobservable Inputs (Level 3) | Yield Analysis | Discount Rate | Secured first lien debt | Weighted Average |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Fair value, measurement input |  | 0.132 |  | 0.118 |
Significant Unobservable Inputs (Level 3) | Yield Analysis | Discount Rate | Secured second lien debt | Minimum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Fair value, measurement input |  | 0.114 |  | 0.115 |
Significant Unobservable Inputs (Level 3) | Yield Analysis | Discount Rate | Secured second lien debt | Maximum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Fair value, measurement input |  | 0.152 |  | 0.154 |
Significant Unobservable Inputs (Level 3) | Yield Analysis | Discount Rate | Secured second lien debt | Weighted Average |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Fair value, measurement input |  | 0.141 |  | 0.138 |
Significant Unobservable Inputs (Level 3) | TEV | Secured first lien debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | $ 40,008 |  | $ 39,946 |
Significant Unobservable Inputs (Level 3) | TEV | Secured second lien debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 7,585 |  | 7,665 |
Significant Unobservable Inputs (Level 3) | TEV | Unsecured debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 45 |  | 55 |
Significant Unobservable Inputs (Level 3) | TEV | Preferred and common equity / equivalents |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | $ 54,151 |  | $ 63,319 |
Significant Unobservable Inputs (Level 3) | TEV | EBITDA multiple | Secured first lien debt | Minimum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Fair value, measurement input |  | 4.7 |  | 4.8 |
Significant Unobservable Inputs (Level 3) | TEV | EBITDA multiple | Secured first lien debt | Maximum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Fair value, measurement input |  | 6.6 |  | 6.7 |
Significant Unobservable Inputs (Level 3) | TEV | EBITDA multiple | Secured first lien debt | Weighted Average |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Fair value, measurement input |  | 6.1 |  | 6.2 |
Significant Unobservable Inputs (Level 3) | TEV | EBITDA multiple | Secured second lien debt | Minimum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Fair value, measurement input |  | 5.6 |  | 5.6 |
Significant Unobservable Inputs (Level 3) | TEV | EBITDA multiple | Secured second lien debt | Maximum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Fair value, measurement input |  | 5.6 |  | 5.6 |
Significant Unobservable Inputs (Level 3) | TEV | EBITDA multiple | Secured second lien debt | Weighted Average |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Fair value, measurement input |  | 5.6 |  | 5.6 |
Significant Unobservable Inputs (Level 3) | TEV | EBITDA multiple | Preferred and common equity / equivalents | Minimum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Fair value, measurement input |  | 4 |  | 4.1 |
Significant Unobservable Inputs (Level 3) | TEV | EBITDA multiple | Preferred and common equity / equivalents | Maximum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Fair value, measurement input |  | 10.8 |  | 11 |
Significant Unobservable Inputs (Level 3) | TEV | EBITDA multiple | Preferred and common equity / equivalents | Weighted Average |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Fair value, measurement input |  | 6.5 |  | 6.5 |
Significant Unobservable Inputs (Level 3) | TEV | EBITDA | Secured first lien debt | Minimum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | $ 862 |  | $ 800 |
Significant Unobservable Inputs (Level 3) | TEV | EBITDA | Secured first lien debt | Maximum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 10,103 |  | 10,257 |
Significant Unobservable Inputs (Level 3) | TEV | EBITDA | Secured first lien debt | Weighted Average |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 7,352 |  | 7,605 |
Significant Unobservable Inputs (Level 3) | TEV | EBITDA | Secured second lien debt | Minimum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 2,996 |  | 3,299 |
Significant Unobservable Inputs (Level 3) | TEV | EBITDA | Secured second lien debt | Maximum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 2,996 |  | 3,299 |
Significant Unobservable Inputs (Level 3) | TEV | EBITDA | Secured second lien debt | Weighted Average |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 2,996 |  | 3,299 |
Significant Unobservable Inputs (Level 3) | TEV | EBITDA | Preferred and common equity / equivalents | Minimum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 862 |  | 800 |
Significant Unobservable Inputs (Level 3) | TEV | EBITDA | Preferred and common equity / equivalents | Maximum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 80,276 |  | 74,512 |
Significant Unobservable Inputs (Level 3) | TEV | EBITDA | Preferred and common equity / equivalents | Weighted Average |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | $ 9,873 |  | $ 11,742 |
Significant Unobservable Inputs (Level 3) | TEV | Revenue multiple | Secured first lien debt | Minimum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Fair value, measurement input |  | 0.3 |  | 0.3 |
Significant Unobservable Inputs (Level 3) | TEV | Revenue multiple | Secured first lien debt | Maximum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Fair value, measurement input |  | 0.6 |  | 0.6 |
Significant Unobservable Inputs (Level 3) | TEV | Revenue multiple | Secured first lien debt | Weighted Average |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Fair value, measurement input |  | 0.4 |  | 0.5 |
Significant Unobservable Inputs (Level 3) | TEV | Revenue multiple | Unsecured debt | Minimum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Fair value, measurement input |  | 1.3 |  | 0.3 |
Significant Unobservable Inputs (Level 3) | TEV | Revenue multiple | Unsecured debt | Maximum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Fair value, measurement input |  | 1.3 |  | 1.3 |
Significant Unobservable Inputs (Level 3) | TEV | Revenue multiple | Unsecured debt | Weighted Average |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Fair value, measurement input |  | 1.3 |  | 1 |
Significant Unobservable Inputs (Level 3) | TEV | Revenue multiple | Preferred and common equity / equivalents | Minimum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Fair value, measurement input |  | 0.3 |  | 0.3 |
Significant Unobservable Inputs (Level 3) | TEV | Revenue multiple | Preferred and common equity / equivalents | Maximum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Fair value, measurement input |  | 4.4 |  | 4.4 |
Significant Unobservable Inputs (Level 3) | TEV | Revenue multiple | Preferred and common equity / equivalents | Weighted Average |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Fair value, measurement input |  | 1.5 |  | 1.4 |
Significant Unobservable Inputs (Level 3) | TEV | Revenue | Secured first lien debt | Minimum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | $ 12,908 |  | $ 11,514 |
Significant Unobservable Inputs (Level 3) | TEV | Revenue | Secured first lien debt | Maximum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 15,526 |  | 16,320 |
Significant Unobservable Inputs (Level 3) | TEV | Revenue | Secured first lien debt | Weighted Average |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 14,543 |  | 14,656 |
Significant Unobservable Inputs (Level 3) | TEV | Revenue | Unsecured debt | Minimum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 6,125 |  | 764 |
Significant Unobservable Inputs (Level 3) | TEV | Revenue | Unsecured debt | Maximum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 6,125 |  | 11,514 |
Significant Unobservable Inputs (Level 3) | TEV | Revenue | Unsecured debt | Weighted Average |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 6,125 |  | 4,249 |
Significant Unobservable Inputs (Level 3) | TEV | Revenue | Preferred and common equity / equivalents | Minimum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 3,130 |  | 764 |
Significant Unobservable Inputs (Level 3) | TEV | Revenue | Preferred and common equity / equivalents | Maximum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 43,117 |  | 42,926 |
Significant Unobservable Inputs (Level 3) | TEV | Revenue | Preferred and common equity / equivalents | Weighted Average |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | 20,544 |  | 19,963 |
Significant Unobservable Inputs (Level 3) | Market Quote | Secured second lien debt |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Investments owned, fair value |  | $ 9,830 |  | $ 10,791 |
Significant Unobservable Inputs (Level 3) | Market Quote | IBP | Secured second lien debt | Minimum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Fair value, measurement input |  | 0.543 |  | 0.820 |
Significant Unobservable Inputs (Level 3) | Market Quote | IBP | Secured second lien debt | Maximum |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Fair value, measurement input |  | 0.975 |  | 0.950 |
Significant Unobservable Inputs (Level 3) | Market Quote | IBP | Secured second lien debt | Weighted Average |  |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |  |
Fair value, measurement input |  | 0.788 |  | 0.865 |
[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.

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