Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED SCHEDULE OF INVESTMENTS (Parentheticals)

v3.23.3
CONSOLIDATED SCHEDULE OF INVESTMENTS (Parentheticals) - USD ($)
Sep. 30, 2023
Sep. 30, 2022
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 172.50% [1],[2],[3],[4],[5] 205.90% [6],[7],[8],[9],[10]
Investments, at fair value $ 704,815,000 [4] $ 649,615,000 [9]
Percentage threshold of qualified assets representing total assets in order to acquire non-qualified assets 70.00% 70.00%
Percentage of acquired non-qualifying assets of total assets 0.10%  
Debt instrument, leverage maturity, terms 2 years 2 years
Cumulative gross unrealized depreciation $ 56,900,000 $ 35,200,000
Cumulative net unrealized appreciation 33,700,000 52,300,000
Cumulative gross unrealized appreciation (depreciation) for federal income tax purposes (23,200,000) 17,100,000
Based on a tax cost $ 728,000,000 666,700,000
Funko Acquisition Holdings, LLC    
Schedule of Investments [Line Items]    
Investments, at fair value   $ 22,000
Percentage of acquired non-qualifying assets of total assets   1.00%
Secured Overnight Financing Rate (SOFR)    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash 5.32% 3.04%
Secured Overnight Financing Rate (SOFR) _90 day    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash 5.40%  
LIBOR    
Schedule of Investments [Line Items]    
Investment, reference rate and spread   6.50%
Investment, basis spread, variable rate, floor   1.00%
London Interbank Offered Rate (LIBOR)_30 day    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash   3.14%
London Interbank Offered Rate (LIBOR)_90 day    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash   3.75%
Prime Rate    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash   6.25%
Collateral Pledged    
Schedule of Investments [Line Items]    
Investments, at fair value $ 628,300,000 $ 577,600,000
Investment, Identifier [Axis]: Leeds Novamark Capital I, L.P. – Limited Partnership Interest    
Schedule of Investments [Line Items]    
Line of credit facility, available [6],[7],[8],[10],[11],[12],[13]   843,000
Investments, at fair value [11],[12],[13]   6,397,000
Investment, Identifier [Axis]: Antenna Research Associates, Inc. – Common Equity Units    
Schedule of Investments [Line Items]    
Investments, at fair value [12],[14]   13,734,000
Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value [12],[14]   1,773,000
Investment, Identifier [Axis]: Ohio Armor Holdings, LLC – Common Equity    
Schedule of Investments [Line Items]    
Investments, at fair value [12],[14]   $ 1,017,000
Investment, Identifier [Axis]: 8th Avenue Food & Provisions, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 7.90% [1],[2],[3],[5],[15] 7.80% [6],[7],[8],[10],[16]
Investment, interest rate, paid in cash 13.20% [1],[2],[3],[5],[15] 10.90% [6],[7],[8],[10],[16]
Investments, at fair value $ 2,495,000 [15] $ 3,020,000 [16]
Investment, Identifier [Axis]: ALS Education, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 7.00% [1],[2],[3],[5],[17] 7.00% [6],[7],[8],[10],[18]
Investment, interest rate, paid in cash 12.30% [1],[2],[3],[5],[17] 10.10% [6],[7],[8],[10],[18]
Line of credit facility, available $ 3,000,000 [1],[2],[3],[5],[17] $ 3,000,000 [6],[7],[8],[10],[18]
Investments, at fair value $ 0 [17] $ 0 [18]
Investment, Identifier [Axis]: ALS Education, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 7.00% [1],[2],[3],[5],[17] 7.00% [6],[7],[8],[10],[18]
Investment, interest rate, paid in cash 12.30% [1],[2],[3],[5],[17] 10.10% [6],[7],[8],[10],[18]
Investments, at fair value $ 18,700,000 [17] $ 19,468,000 [18]
Investment, Identifier [Axis]: Antenna Research Associates, Inc. – Common Equity Units    
Schedule of Investments [Line Items]    
Investments, at fair value [19],[20] $ 18,436,000  
Investment, Identifier [Axis]: Antenna Research Associates, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 10.00% [1],[2],[3],[5],[19] 10.00% [6],[7],[8],[10],[14]
Investment, interest rate, paid in cash 15.30% [1],[2],[3],[5],[19] 13.00% [6],[7],[8],[10],[14]
Investment, interest rate, paid in kind 4.00% [1],[2],[3],[5],[19] 4.00% [6],[7],[8],[10],[14]
Investments, at fair value $ 30,048,000 [19] $ 21,973,000 [14]
Investment, Identifier [Axis]: Arc Drilling Holdings LLC – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 403,000 [19],[20] $ 0 [12],[14]
Investment, Identifier [Axis]: Arc Drilling Holdings LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 11.50% [1],[2],[3],[5],[17] 8.00% [6],[7],[8],[10],[18]
Investment, interest rate, paid in cash 10.50% [1],[2],[3],[5],[17] 11.10% [6],[7],[8],[10],[18]
Investment, interest rate, paid in kind [1],[2],[3],[5],[17] 6.30%  
Line of credit facility, available $ 1,000,000 [1],[2],[3],[5],[17] $ 1,000,000 [6],[7],[8],[10],[18]
Investments, at fair value $ 0 [17] $ 0 [18]
Investment, Identifier [Axis]: Arc Drilling Holdings LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[5],[17] 11.50%  
Investment, interest rate, paid in cash [1],[2],[3],[5],[17] 10.50%  
Investment, interest rate, paid in kind [1],[2],[3],[5],[17] 6.30%  
Investments, at fair value [17] $ 5,724,000  
Investment, Identifier [Axis]: Arc Drilling Holdings LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[10],[18]   9.50%
Investment, interest rate, paid in cash [6],[7],[8],[10],[18]   12.60%
Investment, interest rate, paid in kind [6],[7],[8],[10],[18]   3.00%
Investments, at fair value [18]   $ 5,350,000
Investment, Identifier [Axis]: Axios Industrial Group, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 8.60% [1],[2],[3],[5],[17] 9.50% [6],[7],[8],[10],[18],[21]
Investment, interest rate, paid in cash 13.90% [1],[2],[3],[5],[17] 12.60% [6],[7],[8],[10],[18],[21]
Investments, at fair value $ 11,291,000 [17] $ 8,741,000 [18],[21]
Investment, Identifier [Axis]: Axios Industrial Group, LLC– Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[10],[18],[21]   9.50%
Investment, interest rate, paid in cash [6],[7],[8],[10],[18],[21]   12.60%
Line of credit facility, available [6],[7],[8],[10],[18],[21]   $ 5,000,000
Investments, at fair value [18],[21]   2,914,000
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[5],[17],[22] 2.00%  
Investment, interest rate, paid in cash [1],[2],[3],[5],[17],[22] 7.30%  
Line of credit facility, available [1],[2],[3],[5],[17],[22] $ 0  
Investments, at fair value [17],[22] $ 978,000  
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[5],[17],[22] 2.00%  
Investment, interest rate, paid in cash [1],[2],[3],[5],[17],[22] 7.30%  
Investments, at fair value [17],[22] $ 4,890,000  
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.(S) – Common Stock Warrant    
Schedule of Investments [Line Items]    
Investments, at fair value 0 [19],[20],[22] $ 25,000 [12],[14],[23]
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.(S) – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[10],[18],[23]   11.00%
Investment, interest rate, paid in cash [6],[7],[8],[10],[18],[23]   14.10%
Line of credit facility, available [6],[7],[8],[10],[18],[23]   $ 0
Investments, at fair value [18],[23]   1,146,000
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.(S) – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 0 [19],[20],[22] $ 2,718,000 [12],[14],[23]
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.(S) – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[10],[18],[23]   11.00%
Investment, interest rate, paid in cash [6],[7],[8],[10],[18],[23]   14.10%
Investments, at fair value [18],[23]   $ 5,730,000
Investment, Identifier [Axis]: CHA Holdings, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[5],[15],[24] 9.00%  
Investment, interest rate, paid in cash [1],[2],[3],[5],[15],[24] 14.40%  
Investments, at fair value [15],[24] $ 2,820,000  
Investment, Identifier [Axis]: CHA Holdings, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[10],[16],[25]   8.80%
Investment, interest rate, paid in cash [6],[7],[8],[10],[16],[25]   12.50%
Investments, at fair value [16],[25]   $ 2,700,000
Investment, Identifier [Axis]: CPM Holdings, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[10],[16]   8.30%
Investment, interest rate, paid in cash [6],[7],[8],[10],[16]   11.40%
Investments, at fair value [16]   $ 758,000
Investment, Identifier [Axis]: Cafe Zupas – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[5],[17] 6.80%  
Investment, interest rate, paid in cash [1],[2],[3],[5],[17] 12.10%  
Line of credit facility, available [1],[2],[3],[5],[17] $ 1,500,000  
Investments, at fair value [17] $ 0  
Investment, Identifier [Axis]: Café Zupas – Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 6.80% [1],[2],[3],[5],[17] 7.40% [6],[7],[8],[10],[18]
Investment, interest rate, paid in cash 12.10% [1],[2],[3],[5],[17] 10.50% [6],[7],[8],[10],[18]
Line of credit facility, available $ 2,070,000 [1],[2],[3],[5],[17] $ 0 [6],[7],[8],[10],[18]
Investments, at fair value $ 7,850,000 [17] $ 1,958,000 [18]
Investment, Identifier [Axis]: Café Zupas – Line of Credit,    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[10],[18]   7.40%
Investment, interest rate, paid in cash [6],[7],[8],[10],[18]   10.50%
Line of credit facility, available [6],[7],[8],[10],[18]   $ 4,000,000
Investments, at fair value [18]   $ 0
Investment, Identifier [Axis]: Café Zupas – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 6.80% [1],[2],[3],[5],[17] 7.40% [6],[7],[8],[10],[18]
Investment, interest rate, paid in cash 12.10% [1],[2],[3],[5],[17] 10.50% [6],[7],[8],[10],[18]
Investments, at fair value $ 23,108,000 [17] $ 23,313,000 [18]
Investment, Identifier [Axis]: Canopy Safety Brands, LLC – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value 2,404,000 [19],[20] 647,000 [12],[14]
Investment, Identifier [Axis]: Canopy Safety Brands, LLC – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value 857,000 [19],[20] 798,000 [12],[14]
Investment, Identifier [Axis]: Canopy Safety Brands, LLC—Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value 2,404,000 647,000
Investment, Identifier [Axis]: Canopy Safety Brands, LLC—Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value 857,000 $ 798,000
Investment, Identifier [Axis]: Chinese Yellow Pages Company – Line of Credit,    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[10],[14],[26],[27]   4.00%
Investment, interest rate, paid in cash [6],[7],[8],[10],[14],[26],[27]   10.30%
Line of credit facility, available [6],[7],[8],[10],[14],[26],[27]   $ 0
Investments, at fair value [14],[26],[27]   0
Investment, Identifier [Axis]: Circuitronics EMS Holdings LLC – Common Units    
Schedule of Investments [Line Items]    
Investments, at fair value [12],[14]   0
Investment, Identifier [Axis]: Circuitronics EMS Holdings LLC—Common Units    
Schedule of Investments [Line Items]    
Investments, at fair value $ 0 $ 0
Investment, Identifier [Axis]: DKI Ventures, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash [1],[2],[3],[5],[17],[28] 9.00%  
Line of credit facility, available [1],[2],[3],[5],[17],[28] $ 170,000  
Investments, at fair value [17],[28] $ 113,000  
Investment, Identifier [Axis]: DKI Ventures, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[10],[18]   8.00%
Investment, interest rate, paid in cash 9.00% [1],[2],[3],[5],[17],[28] 11.00% [6],[7],[8],[10],[18]
Investments, at fair value $ 3,253,000 [17],[28] $ 4,554,000 [18]
Investment, Identifier [Axis]: Defiance Integrated Technologies, Inc. – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 3,948,000 [19],[20] $ 1,147,000 [12],[14]
Investment, Identifier [Axis]: Defiance Integrated Technologies, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[5],[19] 9.60%  
Investment, interest rate, paid in cash [1],[2],[3],[5],[19] 14.90%  
Investments, at fair value [19] $ 7,425,000  
Investment, Identifier [Axis]: Defiance Integrated Technologies, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[10],[14]   9.50%
Investment, interest rate, paid in cash [6],[7],[8],[10],[14]   12.60%
Investments, at fair value [14]   $ 7,665,000
Investment, Identifier [Axis]: Defiance Integrated Technologies, Inc.—Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value 3,948,000 1,147,000
Investment, Identifier [Axis]: Defiance Integrated Technologies, Inc.—Term Debt    
Schedule of Investments [Line Items]    
Investments, at fair value $ 7,425,000 $ 7,665,000
Investment, Identifier [Axis]: ENET Holdings, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 8.30% [1],[2],[3],[5],[17] 7.30% [6],[7],[8],[10],[18]
Investment, interest rate, paid in cash 13.60% [1],[2],[3],[5],[17] 10.40% [6],[7],[8],[10],[18]
Investments, at fair value $ 21,397,000 [17] $ 23,142,000 [18]
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 0 [19],[20],[22] $ 0 [12],[14],[23]
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[5],[19],[22],[29] 5.50%  
Investment, interest rate, paid in cash [1],[2],[3],[5],[19],[22],[29] 10.80%  
Investments, at fair value [19],[22],[29] $ 2,895,000  
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[10],[14],[23]   5.50%
Investment, interest rate, paid in cash [6],[7],[8],[10],[14],[23]   8.60%
Investments, at fair value [14],[23]   $ 2,550,000
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc.—Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value 0 0
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc.—Term Debt    
Schedule of Investments [Line Items]    
Investments, at fair value $ 2,895,000 $ 2,550,000
Investment, Identifier [Axis]: Eegee’s LLC – Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 7.80% [1],[2],[3],[5],[17] 8.30% [6],[7],[8],[10],[18]
Investment, interest rate, paid in cash 13.10% [1],[2],[3],[5],[17] 11.40% [6],[7],[8],[10],[18]
Line of credit facility, available $ 4,500,000 [1],[2],[3],[5],[17] $ 4,500,000 [6],[7],[8],[10],[18]
Investments, at fair value $ 2,865,000 [17] $ 2,910,000 [18]
Investment, Identifier [Axis]: Eegee’s LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 7.80% [1],[2],[3],[5],[17] 8.30% [6],[7],[8],[10],[18]
Investment, interest rate, paid in cash 13.10% [1],[2],[3],[5],[17] 11.40% [6],[7],[8],[10],[18]
Line of credit facility, available $ 1,000,000 [1],[2],[3],[5],[17] $ 1,000,000 [6],[7],[8],[10],[18]
Investments, at fair value $ 0 [17] $ 0 [18]
Investment, Identifier [Axis]: Eegee’s LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[5],[17] 7.80%  
Investment, interest rate, paid in cash [1],[2],[3],[5],[17] 13.10%  
Investments, at fair value [17] $ 16,235,000  
Investment, Identifier [Axis]: Eegee’s LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[10],[18]   8.30%
Investment, interest rate, paid in cash [6],[7],[8],[10],[18]   11.40%
Investments, at fair value [18]   $ 16,490,000
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC – Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[10],[18]   7.00%
Investment, interest rate, paid in cash [6],[7],[8],[10],[18]   10.10%
Investment, interest rate, paid in kind [6],[7],[8],[10],[18]   1.50%
Line of credit facility, available [6],[7],[8],[10],[18]   $ 0
Investments, at fair value [18]   $ 4,885,000
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[10],[18]   8.30%
Investment, interest rate, paid in cash [6],[7],[8],[10],[18]   11.40%
Line of credit facility, available [6],[7],[8],[10],[18]   $ 3,000,000
Investments, at fair value [18]   0
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value 4,265,000 [19],[20] $ 2,842,000 [12],[14],[23]
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC – Term Debt 1    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[10],[18]   7.00%
Investment, interest rate, paid in cash [6],[7],[8],[10],[18]   10.10%
Investment, interest rate, paid in kind [6],[7],[8],[10],[18]   1.50%
Investments, at fair value [18]   $ 22,962,000
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC – Term Debt 2    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[10],[18]   7.00%
Investment, interest rate, paid in cash [6],[7],[8],[10],[18]   10.10%
Investment, interest rate, paid in kind [6],[7],[8],[10],[18]   2.50%
Investments, at fair value [18]   $ 4,407,000
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC—Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Investments, at fair value 0 4,885,000
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC—Line of Credit    
Schedule of Investments [Line Items]    
Investments, at fair value 0 0
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC—Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value 4,265,000 2,842,000
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC—Term Debt 1    
Schedule of Investments [Line Items]    
Investments, at fair value 0 22,962,000
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC—Term Debt 2    
Schedule of Investments [Line Items]    
Investments, at fair value 0 $ 4,407,000
Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value [19],[20] $ 0  
Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 8.30% [1],[2],[3],[5],[17] 8.30% [6],[7],[8],[10],[18]
Investment, interest rate, paid in cash 13.60% [1],[2],[3],[5],[17] 11.40% [6],[7],[8],[10],[18]
Line of credit facility, available $ 3,000,000 [1],[2],[3],[5],[17] $ 3,000,000 [6],[7],[8],[10],[18]
Investments, at fair value $ 0 [17] $ 0 [18]
Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 8.30% [1],[2],[3],[5],[17] 8.30% [6],[7],[8],[10],[18]
Investment, interest rate, paid in cash 13.60% [1],[2],[3],[5],[17] 11.40% [6],[7],[8],[10],[18]
Investments, at fair value $ 19,726,000 [17] $ 22,134,000 [18]
Investment, Identifier [Axis]: FES Resources Holdings LLC – Common Equity Units    
Schedule of Investments [Line Items]    
Investments, at fair value 0 [19],[20] 0 [12],[14]
Investment, Identifier [Axis]: FES Resources Holdings LLC – Preferred Equity Units    
Schedule of Investments [Line Items]    
Investments, at fair value $ 4,508,000 [19],[20] $ 0 [12],[14]
Investment, Identifier [Axis]: Fix-It Group, LLC – Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 8.10% [1],[2],[3],[5],[17] 7.00% [6],[7],[8],[10],[18],[25]
Investment, interest rate, paid in cash 13.40% [1],[2],[3],[5],[17] 10.10% [6],[7],[8],[10],[18],[25]
Line of credit facility, available $ 0 [1],[2],[3],[5],[17] $ 10,000,000 [6],[7],[8],[10],[18],[25]
Investments, at fair value $ 6,894,000 [17] $ 0 [18],[25]
Investment, Identifier [Axis]: Fix-It Group, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 8.10% [1],[2],[3],[5],[17] 7.00% [6],[7],[8],[10],[18],[25]
Investment, interest rate, paid in cash 13.40% [1],[2],[3],[5],[17] 10.10% [6],[7],[8],[10],[18],[25]
Line of credit facility, available $ 2,500,000 [1],[2],[3],[5],[17] $ 3,000,000 [6],[7],[8],[10],[18],[25]
Investments, at fair value $ 499,000 [17] $ 0 [18],[25]
Investment, Identifier [Axis]: Fix-It Group, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 8.10% [1],[2],[3],[5],[17] 7.00% [6],[7],[8],[10],[18],[25]
Investment, interest rate, paid in cash 13.40% [1],[2],[3],[5],[17] 10.10% [6],[7],[8],[10],[18],[25]
Investments, at fair value $ 12,170,000 [17] $ 9,950,000 [18],[25]
Investment, Identifier [Axis]: Frontier Financial Group Inc. – Convertible Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[10],[14],[30]   6.00%
Investment, interest rate, paid in cash [1],[2],[3],[5],[19],[28] 6.00%  
Investments, at fair value $ 24,000 [19],[28] $ 55,000 [14],[30]
Investment, Identifier [Axis]: Frontier Financial Group Inc. – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value 0 [19],[20] 0 [12],[14]
Investment, Identifier [Axis]: Frontier Financial Group Inc. – Preferred Stock Warrant    
Schedule of Investments [Line Items]    
Investments, at fair value 0 [19],[20] 0 [12],[14]
Investment, Identifier [Axis]: Funko Acquisition Holdings, LLC(S) – Common Units    
Schedule of Investments [Line Items]    
Investments, at fair value 22,000 [20],[22],[31] 58,000 [12],[23],[32]
Investment, Identifier [Axis]: GFRC 360, LLC – Common Stock Warrants    
Schedule of Investments [Line Items]    
Investments, at fair value $ 0 [19],[20] $ 0 [12],[14]
Investment, Identifier [Axis]: GFRC 360, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 8.00% [1],[2],[3],[5],[17] 8.00% [6],[7],[8],[10],[18]
Investment, interest rate, paid in cash 13.30% [1],[2],[3],[5],[17] 11.10% [6],[7],[8],[10],[18]
Line of credit facility, available $ 175,000 [1],[2],[3],[5],[17] $ 500,000 [6],[7],[8],[10],[18]
Investments, at fair value 1,205,000 [17] 681,000 [18]
Investment, Identifier [Axis]: GFRC 360, LLC – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 253,000 [19],[20] $ 551,000 [12],[14]
Investment, Identifier [Axis]: GFRC 360, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 8.00% [1],[2],[3],[5],[17] 8.00% [6],[7],[8],[10],[18]
Investment, interest rate, paid in cash 13.30% [1],[2],[3],[5],[17] 11.10% [6],[7],[8],[10],[18]
Investments, at fair value $ 945,000 [17] $ 973,000 [18]
Investment, Identifier [Axis]: GSM MidCo LLC – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 1,562,000 [19],[20] $ 1,359,000 [12],[14]
Investment, Identifier [Axis]: Giving Home Health Care, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash 12.50% [1],[2],[3],[5],[17],[28] 12.50% [6],[7],[8],[10],[18],[30]
Investments, at fair value $ 28,800,000 [17],[28] $ 28,800,000 [18],[30]
Investment, Identifier [Axis]: Giving Home Health Care, LLC – Warrant    
Schedule of Investments [Line Items]    
Investments, at fair value $ 2,794,000 [19],[20] $ 19,000 [12],[14]
Investment, Identifier [Axis]: Gray Matter Systems, LLC – Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash [6],[7],[8],[10],[18],[30]   11.30%
Line of credit facility, available [6],[7],[8],[10],[18],[30]   $ 4,000,000
Investments, at fair value [18],[30]   $ 2,481,000
Investment, Identifier [Axis]: Gray Matter Systems, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash 12.00% [1],[2],[3],[5],[17],[28] 11.30% [6],[7],[8],[10],[18],[30]
Investment, interest rate, paid in kind [1],[2],[3],[5],[17],[28] 2.00%  
Investments, at fair value $ 13,645,000 [17],[28] $ 2,084,000 [18],[30]
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[10],[18],[25]   6.80%
Investment, interest rate, paid in cash [6],[7],[8],[10],[18],[25]   9.90%
Line of credit facility, available [6],[7],[8],[10],[18],[25]   $ 0
Investments, at fair value [18],[25]   $ 9,925,000
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 8.00% [1],[2],[3],[5],[17],[24] 6.80% [6],[7],[8],[10],[18],[25]
Investment, interest rate, paid in cash 13.40% [1],[2],[3],[5],[17],[24] 9.90% [6],[7],[8],[10],[18],[25]
Line of credit facility, available $ 478,000 [1],[2],[3],[5],[17],[24] $ 1,500,000 [6],[7],[8],[10],[18],[25]
Investments, at fair value 1,347,000 [17],[24] 1,489,000 [18],[25]
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 3,451,000 [19],[20] $ 945,000 [12],[14]
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Term Debt 1    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 8.00% [1],[2],[3],[5],[17],[24] 6.80% [6],[7],[8],[10],[18],[25]
Investment, interest rate, paid in cash 13.40% [1],[2],[3],[5],[17],[24] 9.90% [6],[7],[8],[10],[18],[25]
Investments, at fair value $ 15,872,000 [17],[24] $ 15,880,000 [18],[25]
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Term Debt 2    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 8.00% [1],[2],[3],[5],[17],[24] 6.80% [6],[7],[8],[10],[18],[25]
Investment, interest rate, paid in cash 13.40% [1],[2],[3],[5],[17],[24] 9.90% [6],[7],[8],[10],[18],[25]
Investments, at fair value $ 3,197,000 [17],[24] $ 7,940,000 [18],[25]
Investment, Identifier [Axis]: Imperative Holdings Corporation – Preferred Equity Units    
Schedule of Investments [Line Items]    
Investments, at fair value $ 2,318,000 [19],[20] $ 2,028,000 [12],[14]
Investment, Identifier [Axis]: Imperative Holdings Corporation – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[5],[17] 9.80%  
Investment, interest rate, paid in cash [1],[2],[3],[5],[17] 15.10%  
Investments, at fair value [17] $ 20,858,000  
Investment, Identifier [Axis]: Imperative Holdings Corporation – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[10],[18]   10.30%
Investment, interest rate, paid in cash [6],[7],[8],[10],[18]   13.40%
Investments, at fair value [18]   $ 23,295,000
Investment, Identifier [Axis]: LWO Acquisitions Company LLC – Term Debt    
Schedule of Investments [Line Items]    
Investments, at fair value [14],[33]   0
Investment, Identifier [Axis]: LWO Acquisitions Company LLC—Term Debt    
Schedule of Investments [Line Items]    
Investments, at fair value $ 0 0
Investment, Identifier [Axis]: Leadpoint Business Services, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[5],[17] 8.50%  
Investment, interest rate, paid in cash [1],[2],[3],[5],[17] 13.80%  
Investments, at fair value [17] $ 13,399,000  
Investment, Identifier [Axis]: Leeds Novamark Capital I, L.P. – Limited Partnership Interest    
Schedule of Investments [Line Items]    
Line of credit facility, available [1],[2],[3],[5],[20],[34],[35] 843,000  
Investments, at fair value [20],[34],[35] $ 231,000  
Investment, Identifier [Axis]: Lonestar EMS, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in kind [1],[2],[3],[5],[19],[28] 8.00%  
Investments, at fair value [19],[28] $ 3,927,000  
Investment, Identifier [Axis]: Lonestar EMS, LLC - Common Units    
Schedule of Investments [Line Items]    
Investments, at fair value 0 0
Investment, Identifier [Axis]: Lonestar EMS, LLC – Common Units    
Schedule of Investments [Line Items]    
Investments, at fair value 0 [19],[20] $ 0 [12],[14]
Investment, Identifier [Axis]: Lonestar EMS, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash [6],[7],[8],[10],[14],[30]   8.00%
Investments, at fair value [14],[30]   $ 3,030,000
Investment, Identifier [Axis]: Lonestar EMS, LLC—Term Debt    
Schedule of Investments [Line Items]    
Investments, at fair value 3,927,000 $ 3,030,000
Investment, Identifier [Axis]: MCG Energy Solutions, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[10],[18]   7.50%
Investment, interest rate, paid in cash [6],[7],[8],[10],[18]   10.60%
Line of credit facility, available [6],[7],[8],[10],[18]   $ 3,000,000
Investments, at fair value [18]   0
Investment, Identifier [Axis]: MCG Energy Solutions, LLC – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 8,904,000 [19],[20] $ 8,151,000 [14]
Investment, Identifier [Axis]: MCG Energy Solutions, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[5],[17] 7.60%  
Investment, interest rate, paid in cash [1],[2],[3],[5],[17] 12.90%  
Investment, interest rate, paid in kind [1],[2],[3],[5],[17] 3.50%  
Investments, at fair value [17] $ 17,628,000  
Investment, Identifier [Axis]: MCG Energy Solutions, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[10],[18]   7.50%
Investment, interest rate, paid in cash [6],[7],[8],[10],[18]   10.60%
Investment, interest rate, paid in kind [6],[7],[8],[10],[18]   3.50%
Investments, at fair value [18]   $ 19,779,000
Investment, Identifier [Axis]: NeoGraf Solutions LLC – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value [19],[20] $ 0  
Investment, Identifier [Axis]: NeoGraf Solutions LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[5],[17] 7.00%  
Investment, interest rate, paid in cash [1],[2],[3],[5],[17] 11.00%  
Investment, interest rate, paid in kind [1],[2],[3],[5],[17] 1.30%  
Line of credit facility, available [1],[2],[3],[5],[17] $ 4,500,000  
Investments, at fair value [17] $ 0  
Investment, Identifier [Axis]: NeoGraf Solutions LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[5],[17] 7.00%  
Investment, interest rate, paid in cash [1],[2],[3],[5],[17] 11.00%  
Investment, interest rate, paid in kind [1],[2],[3],[5],[17] 1.30%  
Investments, at fair value [17] $ 26,000,000  
Investment, Identifier [Axis]: NetFortris Corp. – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value [12],[14]   $ 469,000
Investment, Identifier [Axis]: OCI, LLC – Common Units    
Schedule of Investments [Line Items]    
Investments, at fair value [19],[20] $ 0  
Investment, Identifier [Axis]: OCI, LLC – Term Debt 1    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[5],[17] 7.50%  
Investment, interest rate, paid in cash [1],[2],[3],[5],[17] 12.80%  
Investments, at fair value [17] $ 19,800,000  
Investment, Identifier [Axis]: OCI, LLC – Term Debt 2    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash [1],[2],[3],[5],[17],[28] 7.00%  
Investment, interest rate, paid in kind [1],[2],[3],[5],[17],[28] 7.00%  
Investments, at fair value [17],[28] $ 1,992,000  
Investment, Identifier [Axis]: Ohio Armor Holdings, LLC – Common Equity    
Schedule of Investments [Line Items]    
Investments, at fair value [19],[20] $ 680,000  
Investment, Identifier [Axis]: Ohio Armor Holdings, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 8.00% [1],[2],[3],[5],[17] 8.00% [6],[7],[8],[10],[18]
Investment, interest rate, paid in cash 13.30% [1],[2],[3],[5],[17] 11.10% [6],[7],[8],[10],[18]
Investments, at fair value $ 17,294,000 [17] $ 18,558,000 [18]
Investment, Identifier [Axis]: PIC 360, LLC – Common Equity Units    
Schedule of Investments [Line Items]    
Investments, at fair value 284,000 [19],[20] 3,454,000 [12],[14]
Investment, Identifier [Axis]: PIC 360, LLC—Common Equity Units    
Schedule of Investments [Line Items]    
Investments, at fair value $ 284,000 $ 3,454,000
Investment, Identifier [Axis]: Pansophic Learning, Ltd. – Term Debt 1    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 7.50% [1],[2],[3],[5],[17],[24] 7.30% [6],[7],[8],[10],[18]
Investment, interest rate, paid in cash 12.90% [1],[2],[3],[5],[17],[24] 10.40% [6],[7],[8],[10],[18]
Investments, at fair value $ 27,965,000 [17],[24] $ 27,825,000 [18]
Investment, Identifier [Axis]: Pansophic Learning, Ltd. – Term Debt 2    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 7.50% [1],[2],[3],[5],[17],[24] 7.30% [6],[7],[8],[10],[18]
Investment, interest rate, paid in cash 12.90% [1],[2],[3],[5],[17],[24] 10.40% [6],[7],[8],[10],[18]
Investments, at fair value $ 4,994,000 [17],[24] $ 4,969,000 [18]
Investment, Identifier [Axis]: R2i Holdings, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in kind [6],[7],[8],[10],[30],[36]   8.00%
Line of credit facility, available [6],[7],[8],[10],[30],[36]   $ 1,171,000
Investments, at fair value [30],[36]   $ 829,000
Investment, Identifier [Axis]: R2i Holdings, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in kind [6],[7],[8],[10],[30],[36]   8.00%
Investments, at fair value [30],[36]   $ 18,000,000
Investment, Identifier [Axis]: Salt & Straw, LLC – Common Warrant    
Schedule of Investments [Line Items]    
Investments, at fair value [19],[20] $ 31,000  
Investment, Identifier [Axis]: Salt & Straw, LLC – Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 9.10% [1],[2],[3],[5],[17] 8.00% [6],[7],[8],[10],[18]
Investment, interest rate, paid in cash 14.40% [1],[2],[3],[5],[17] 11.10% [6],[7],[8],[10],[18]
Line of credit facility, available $ 1,300,000 [1],[2],[3],[5],[17] $ 11,500,000 [6],[7],[8],[10],[18]
Investments, at fair value $ 9,715,000 [17] $ 0 [18]
Investment, Identifier [Axis]: Salt & Straw, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 9.10% [1],[2],[3],[5],[17] 8.00% [6],[7],[8],[10],[18]
Investment, interest rate, paid in cash 14.40% [1],[2],[3],[5],[17] 11.10% [6],[7],[8],[10],[18]
Line of credit facility, available $ 2,000,000 [1],[2],[3],[5],[17] $ 1,200,000 [6],[7],[8],[10],[18]
Investments, at fair value 0 [17] 800,000 [18]
Investment, Identifier [Axis]: Salvo Technologies, Inc. – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 1,225,000 [19],[20] $ 2,584,000 [12],[14]
Investment, Identifier [Axis]: Salvo Technologies, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 9.50% [1],[2],[3],[5],[17] 9.50% [6],[7],[8],[10],[18],[21]
Investment, interest rate, paid in cash 14.80% [1],[2],[3],[5],[17] 12.50% [6],[7],[8],[10],[18],[21]
Investments, at fair value $ 10,900,000 [17] $ 11,619,000 [18],[21]
Investment, Identifier [Axis]: Sea Link International IRB, Inc. – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 183,000 [19],[20] $ 153,000 [12],[14]
Investment, Identifier [Axis]: Sea Link International IRB, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in kind [6],[7],[8],[10],[18],[30]   14.50%
Investments, at fair value [18],[30]   $ 11,074,000
Investment, Identifier [Axis]: Sea Link International IRB, Inc. – Term Debt 1    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash [1],[2],[3],[5],[17],[28] 11.30%  
Investment, interest rate, paid in kind [1],[2],[3],[5],[17],[28] 2.00%  
Investments, at fair value [17],[28] $ 11,675,000  
Investment, Identifier [Axis]: Sea Link International IRB, Inc. – Term Debt 2    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash [1],[2],[3],[5],[17],[28] 12.00%  
Investment, interest rate, paid in kind [1],[2],[3],[5],[17],[28] 2.00%  
Investments, at fair value [17],[28] $ 4,000,000  
Investment, Identifier [Axis]: Sea Link International IRB, Inc.– Common Equity Units    
Schedule of Investments [Line Items]    
Investments, at fair value 340,000 [19],[20] 105,000 [12],[14]
Investment, Identifier [Axis]: Sokol & Company Holdings, LLC – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 1,612,000 [19],[20] $ 1,500,000 [12],[14]
Investment, Identifier [Axis]: Sokol & Company Holdings, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[10],[18],[21]   7.00%
Investment, interest rate, paid in cash [6],[7],[8],[10],[18],[21]   10.00%
Investments, at fair value [18],[21]   $ 13,500,000
Investment, Identifier [Axis]: Sokol & Company Holdings, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[5],[17] 7.00%  
Investment, interest rate, paid in cash [1],[2],[3],[5],[17] 12.30%  
Investments, at fair value [17] $ 13,095,000  
Investment, Identifier [Axis]: SpaceCo Holdings, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 7.20% [1],[2],[3],[5],[17],[24] 7.00% [6],[7],[8],[10],[18],[25]
Investment, interest rate, paid in cash 12.50% [1],[2],[3],[5],[17],[24] 10.80% [6],[7],[8],[10],[18],[25]
Line of credit facility, available $ 550,000 [1],[2],[3],[5],[17],[24] $ 100,000 [6],[7],[8],[10],[18],[25]
Investments, at fair value $ 1,434,000 [17],[24] $ 1,886,000 [18],[25]
Investment, Identifier [Axis]: SpaceCo Holdings, LLC – Term Deb    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[10],[18],[25]   7.00%
Investment, interest rate, paid in cash [6],[7],[8],[10],[18],[25]   10.80%
Investments, at fair value [18],[25]   $ 31,481,000
Investment, Identifier [Axis]: SpaceCo Holdings, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[5],[17],[24] 7.20%  
Investment, interest rate, paid in cash [1],[2],[3],[5],[17],[24] 12.50%  
Investments, at fair value [17],[24] $ 29,944,000  
Investment, Identifier [Axis]: Springfield, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 10.10% [1],[2],[3],[5],[17] 10.00% [6],[7],[8],[10],[18]
Investment, interest rate, paid in cash 15.40% [1],[2],[3],[5],[17] 13.10% [6],[7],[8],[10],[18]
Investments, at fair value $ 29,850,000 [17] $ 29,738,000 [18]
Investment, Identifier [Axis]: TNCP Intermediate HoldCo, LLC – Common Equity Units    
Schedule of Investments [Line Items]    
Investments, at fair value 3,073,000 [19],[20] $ 2,337,000 [12],[14]
Investment, Identifier [Axis]: TNCP Intermediate HoldCo, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash [6],[7],[8],[10],[14],[30]   8.00%
Line of credit facility, available [6],[7],[8],[10],[14],[30]   $ 1,000,000
Investments, at fair value $ 900,000 [19],[28] 1,000,000 [14],[30]
Investment, Identifier [Axis]: TNCP Intermediate HoldCo, LLC—-Line of Credit    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash [1],[2],[3],[5],[19],[28] 8.00%  
Line of credit facility, available [1],[2],[3],[5],[19],[28] $ 1,100,000  
Investments, at fair value 900,000 1,000,000
Investment, Identifier [Axis]: TNCP Intermediate HoldCo, LLC—Common Equity Units    
Schedule of Investments [Line Items]    
Investments, at fair value $ 3,073,000 $ 2,337,000
Investment, Identifier [Axis]: Tailwind Smith Cooper Intermediate Corporation – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 9.00% [1],[2],[3],[5],[15],[24] 9.00% [6],[7],[8],[10],[16]
Investment, interest rate, paid in cash 14.40% [1],[2],[3],[5],[15],[24] 12.10% [6],[7],[8],[10],[16]
Investments, at fair value $ 4,294,000 [15],[24] $ 4,313,000 [16]
Investment, Identifier [Axis]: Targus Cayman HoldCo, Ltd. – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value [12],[36],[37]   7,978,000
Investment, Identifier [Axis]: Technical Resource Management, LLC – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value [19],[20] $ 1,415,000  
Investment, Identifier [Axis]: Technical Resource Management, LLC – Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[5],[17] 8.00%  
Investment, interest rate, paid in cash [1],[2],[3],[5],[17] 13.30%  
Line of credit facility, available [1],[2],[3],[5],[17] $ 2,500,000  
Investments, at fair value [17] $ 0  
Investment, Identifier [Axis]: Technical Resource Management, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[5],[17] 8.00%  
Investment, interest rate, paid in cash [1],[2],[3],[5],[17] 13.30%  
Line of credit facility, available [1],[2],[3],[5],[17] $ 1,000,000  
Investments, at fair value [17] $ 1,970,000  
Investment, Identifier [Axis]: Technical Resource Management, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[5],[17] 8.00%  
Investment, interest rate, paid in cash [1],[2],[3],[5],[17] 13.30%  
Investments, at fair value [17] $ 22,655,000  
Investment, Identifier [Axis]: Total Safety Holdings, LLC – Common Equity    
Schedule of Investments [Line Items]    
Investments, at fair value 146,000 [19],[20] 50,000 [12],[14]
Investment, Identifier [Axis]: Triple H Food Processors, LLC – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value 1,641,000 [19],[20] 672,000 [12],[14]
Investment, Identifier [Axis]: Triple H Food Processors, LLC – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 141,000 [19],[20] $ 120,000 [12],[14]
Investment, Identifier [Axis]: Trowbridge Chicago, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[5],[17] 7.00%  
Investment, interest rate, paid in cash [1],[2],[3],[5],[17] 12.30%  
Line of credit facility, available [1],[2],[3],[5],[17] $ 2,000,000  
Investments, at fair value [17] 0  
Investment, Identifier [Axis]: Trowbridge Chicago, LLC – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value [19],[20] $ 750,000  
Investment, Identifier [Axis]: Trowbridge Chicago, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[5],[17] 7.00%  
Investment, interest rate, paid in cash [1],[2],[3],[5],[17] 12.30%  
Investments, at fair value [17] $ 5,664,000  
Investment, Identifier [Axis]: Turn Key Health Clinics, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 7.30% [1],[2],[3],[5],[17] 7.30% [6],[7],[8],[10],[18]
Investment, interest rate, paid in cash 12.60% [1],[2],[3],[5],[17] 10.40% [6],[7],[8],[10],[18]
Line of credit facility, available $ 1,500,000 [1],[2],[3],[5],[17] $ 1,500,000 [6],[7],[8],[10],[18]
Investments, at fair value $ 499,000 [17] $ 495,000 [18]
Investment, Identifier [Axis]: Turn Key Health Clinics, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 7.30% [1],[2],[3],[5],[17] 7.30% [6],[7],[8],[10],[18]
Investment, interest rate, paid in cash 12.60% [1],[2],[3],[5],[17] 10.40% [6],[7],[8],[10],[18]
Investments, at fair value $ 10,986,000 [17] $ 10,890,000 [18]
Investment, Identifier [Axis]: Unirac Holdings, Inc. – Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 6.50% [1],[2],[3],[5],[17] 6.50% [6],[7],[8],[10],[18],[21]
Investment, interest rate, paid in cash 11.80% [1],[2],[3],[5],[17] 9.50% [6],[7],[8],[10],[18],[21]
Line of credit facility, available $ 1,669,000 [1],[2],[3],[5],[17] $ 2,778,000 [6],[7],[8],[10],[18],[21]
Investments, at fair value $ 1,111,000 [17] $ 0 [18],[21]
Investment, Identifier [Axis]: Unirac Holdings, Inc. – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 6.50% [1],[2],[3],[5],[17] 6.50% [6],[7],[8],[10],[18],[21]
Investment, interest rate, paid in cash 11.80% [1],[2],[3],[5],[17] 9.50% [6],[7],[8],[10],[18],[21]
Line of credit facility, available $ 1,244,000 [1],[2],[3],[5],[17] $ 2,222,000 [6],[7],[8],[10],[18],[21]
Investments, at fair value $ 980,000 [17] $ 0 [18],[21]
Investment, Identifier [Axis]: Unirac Holdings, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[5],[17] 6.50%  
Investment, interest rate, paid in cash [1],[2],[3],[5],[17] 11.80%  
Investments, at fair value [17] $ 14,925,000  
Investment, Identifier [Axis]: Unirac Holdings, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[10],[18],[21]   6.50%
Investment, interest rate, paid in cash [6],[7],[8],[10],[18],[21]   9.50%
Investments, at fair value [18],[21]   $ 15,000,000
Investment, Identifier [Axis]: Viva Railings, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 7.10% [1],[2],[3],[5],[17] 7.00% [6],[7],[8],[10],[18]
Investment, interest rate, paid in cash 12.40% [1],[2],[3],[5],[17] 10.10% [6],[7],[8],[10],[18]
Line of credit facility, available $ 4,000,000 [1],[2],[3],[5],[17] $ 4,000,000 [6],[7],[8],[10],[18]
Investments, at fair value $ 0 [17] $ 0 [18]
Investment, Identifier [Axis]: Viva Railings, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[5],[17] 7.10%  
Investment, interest rate, paid in cash [1],[2],[3],[5],[17] 12.40%  
Investments, at fair value [17] $ 20,436,000  
Investment, Identifier [Axis]: Viva Railings, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[10],[18]   7.00%
Investment, interest rate, paid in cash [6],[7],[8],[10],[18]   10.10%
Investments, at fair value [18]   $ 21,364,000
Investment, Identifier [Axis]: WB Xcel Holdings, LLC - Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value [12],[14]   5,687,000
Investment, Identifier [Axis]: WB Xcel Holdings, LLC - Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 0 $ 5,687,000
Investment, Identifier [Axis]: WB Xcel Holdings, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 10.50% [1],[2],[3],[5],[19] 10.50% [6],[7],[8],[10],[14]
Investment, interest rate, paid in cash 15.80% [1],[2],[3],[5],[19] 13.60% [6],[7],[8],[10],[14]
Line of credit facility, available $ 32,000 [1],[2],[3],[5],[19] $ 32,000 [6],[7],[8],[10],[14]
Investments, at fair value 1,468,000 [19] $ 1,468,000 [14]
Investment, Identifier [Axis]: WB Xcel Holdings, LLC – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value [19],[20] $ 0  
Investment, Identifier [Axis]: WB Xcel Holdings, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[5],[19] 10.50%  
Investment, interest rate, paid in cash [1],[2],[3],[5],[19] 15.80%  
Investments, at fair value [19] $ 9,825,000  
Investment, Identifier [Axis]: WB Xcel Holdings, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[10],[14]   10.50%
Investment, interest rate, paid in cash [6],[7],[8],[10],[14]   13.60%
Investments, at fair value [14]   $ 9,925,000
Investment, Identifier [Axis]: WB Xcel Holdings, LLC—Line of Credit    
Schedule of Investments [Line Items]    
Investments, at fair value 1,468,000 1,468,000
Investment, Identifier [Axis]: WB Xcel Holdings, LLC—Term Loan    
Schedule of Investments [Line Items]    
Investments, at fair value 9,825,000 9,925,000
Investment, Identifier [Axis]: WorkforceQA, LLC – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 359,000 [19],[20] $ 456,000 [12],[14]
Investment, Identifier [Axis]: WorkforceQA, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[5],[17] 6.50%  
Investment, interest rate, paid in cash [1],[2],[3],[5],[17] 11.80%  
Line of credit facility, available [1],[2],[3],[5],[17] $ 1,600,000  
Investments, at fair value [17] $ 400,000  
Investment, Identifier [Axis]: WorkforceQA, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[10],[18],[25],[38]   8.50%
Investment, interest rate, paid in cash [6],[7],[8],[10],[18],[25],[38]   11.60%
Investments, at fair value [18],[25],[38]   $ 9,975,000
Investment, Identifier [Axis]: WorkforceQA, LLC – Term Debt 1    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[5],[17],[39] 8.40%  
Investment, interest rate, paid in cash [1],[2],[3],[5],[17],[39] 13.70%  
Investments, at fair value [17],[39] $ 9,987,000  
Investment, Identifier [Axis]: WorkforceQA, LLC – Term Debt 2    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[5],[17],[39] 9.30%  
Investment, interest rate, paid in cash [1],[2],[3],[5],[17],[39] 14.60%  
Investments, at fair value [17],[39] $ 1,598,000  
Investment, Identifier [Axis]: WorkforceQA, LLC– Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[10],[18],[25]   6.50%
Investment, interest rate, paid in cash [6],[7],[8],[10],[18],[25]   9.60%
Line of credit facility, available [6],[7],[8],[10],[18],[25]   $ 2,000,000
Investments, at fair value [18],[25]   0
Aerospace and Defense    
Schedule of Investments [Line Items]    
Investments, at fair value 97,836,000 88,649,000
Beverage, Food, and Tobacco    
Schedule of Investments [Line Items]    
Investments, at fair value 78,788,000 64,283,000
Diversified/Conglomerate Manufacturing    
Schedule of Investments [Line Items]    
Investments, at fair value 158,061,000 114,105,000
Diversified/Conglomerate Service    
Schedule of Investments [Line Items]    
Investments, at fair value 135,060,000 148,907,000
Healthcare, Education, and Childcare    
Schedule of Investments [Line Items]    
Investments, at fair value 146,438,000 136,401,000
Machinery    
Schedule of Investments [Line Items]    
Investments, at fair value 6,411,000 9,562,000
Telecommunications    
Schedule of Investments [Line Items]    
Investments, at fair value 5,868,000 10,088,000
Automobile    
Schedule of Investments [Line Items]    
Investments, at fair value 27,571,000 20,144,000
Oil and Gas    
Schedule of Investments [Line Items]    
Investments, at fair value 27,830,000 25,373,000
Textiles and Leather    
Schedule of Investments [Line Items]    
Investments, at fair value 0 7,978,000
Secured first lien debt    
Schedule of Investments [Line Items]    
Investments, at fair value 510,701,000 463,858,000
Secured second lien debt    
Schedule of Investments [Line Items]    
Investments, at fair value 127,854,000 115,928,000
Unsecured debt    
Schedule of Investments [Line Items]    
Investments, at fair value 24,000 55,000
Preferred equity    
Schedule of Investments [Line Items]    
Investments, at fair value 26,855,000 27,046,000
Common equity/equivalents    
Schedule of Investments [Line Items]    
Investments, at fair value $ 39,381,000 $ 42,728,000
Non-Control/Non-Affiliate investments    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 162.40% [1],[2],[3],[5],[40] 182.20% [6],[7],[8],[10],[41]
Investments, at fair value $ 663,544,000 [40] $ 574,811,000 [41]
Non-Control/Non-Affiliate investments | Secured first lien debt    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 120.30% [1],[2],[3],[5],[40] 131.20% [6],[7],[8],[10],[41]
Investments, at fair value $ 491,686,000 [40] $ 413,631,000 [41]
Non-Control/Non-Affiliate investments | Secured first lien debt | Aerospace and Defense    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 19.30% [1],[2],[3],[5],[40] 23.40% [6],[7],[8],[10],[41]
Investments, at fair value $ 78,720,000 [40] $ 73,898,000 [41]
Non-Control/Non-Affiliate investments | Secured first lien debt | Beverage, Food, and Tobacco    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 17.80% [1],[2],[3],[5],[40] 18.70% [6],[7],[8],[10],[41]
Investments, at fair value $ 72,868,000 [40] $ 58,971,000 [41]
Non-Control/Non-Affiliate investments | Secured first lien debt | Buildings and Real Estate    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.50% [1],[2],[3],[5],[40] 0.50% [6],[7],[8],[10],[41]
Investments, at fair value $ 2,150,000 [40] $ 1,654,000 [41]
Non-Control/Non-Affiliate investments | Secured first lien debt | Diversified/Conglomerate Manufacturing    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 27.90% [1],[2],[3],[5],[40] 22.30% [6],[7],[8],[10],[41]
Investments, at fair value $ 113,878,000 [40] $ 70,117,000 [41]
Non-Control/Non-Affiliate investments | Secured first lien debt | Diversified/Conglomerate Service    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 25.50% [1],[2],[3],[5],[40] 31.10% [6],[7],[8],[10],[41]
Investments, at fair value $ 104,293,000 [40] $ 97,884,000 [41]
Non-Control/Non-Affiliate investments | Secured first lien debt | Healthcare, Education, and Childcare    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 26.50% [1],[2],[3],[5],[40] 31.30% [6],[7],[8],[10],[41]
Investments, at fair value $ 108,185,000 [40] $ 98,881,000 [41]
Non-Control/Non-Affiliate investments | Secured first lien debt | Machinery    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 1.40% [1],[2],[3],[5],[40] 1.70% [6],[7],[8],[10],[41]
Investments, at fair value $ 5,724,000 [40] $ 5,350,000 [41]
Non-Control/Non-Affiliate investments | Secured first lien debt | Telecommunications    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 1.40% [1],[2],[3],[5],[40] 2.20% [6],[7],[8],[10],[41]
Investments, at fair value $ 5,868,000 [40] $ 6,876,000 [41]
Non-Control/Non-Affiliate investments | Secured first lien debt | Printing and Publishing    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets [6],[7],[8],[10],[41]   0.00%
Non-Control/Non-Affiliate investments | Secured second lien debt    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 29.50% [1],[2],[3],[5],[40] 34.30% [6],[7],[8],[10],[41]
Investments, at fair value [41]   $ 108,263,000
Non-Control/Non-Affiliate investments | Secured second lien debt | Beverage, Food, and Tobacco    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.60% [1],[2],[3],[5],[40] 1.00% [6],[7],[8],[10],[41]
Non-Control/Non-Affiliate investments | Secured second lien debt | Diversified/Conglomerate Manufacturing    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 8.90% [1],[2],[3],[5],[40] 10.80% [6],[7],[8],[10],[41]
Investments, at fair value $ 36,136,000 [40] $ 34,051,000 [41]
Non-Control/Non-Affiliate investments | Secured second lien debt | Diversified/Conglomerate Service    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 4.00% [1],[2],[3],[5],[40] 2.30% [6],[7],[8],[10],[41]
Investments, at fair value $ 16,465,000 [40] $ 7,265,000 [41]
Non-Control/Non-Affiliate investments | Secured second lien debt | Healthcare, Education, and Childcare    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 7.10% [1],[2],[3],[5],[40] 9.10% [6],[7],[8],[10],[41]
Non-Control/Non-Affiliate investments | Secured second lien debt | Machinery    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets [6],[7],[8],[10],[41]   0.20%
Non-Control/Non-Affiliate investments | Secured second lien debt | Automobile    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 3.80% [1],[2],[3],[5],[40] 3.50% [6],[7],[8],[10],[41]
Investments, at fair value [40] $ 15,675,000  
Non-Control/Non-Affiliate investments | Secured second lien debt | Oil and Gas    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 5.10% [1],[2],[3],[5],[40] 7.40% [6],[7],[8],[10],[41]
Investments, at fair value [40] $ 120,429,000  
Non-Control/Non-Affiliate investments | Unsecured debt    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.00% [1],[2],[3],[5],[40] 0.00% [6],[7],[8],[10],[41]
Non-Control/Non-Affiliate investments | Unsecured debt | Diversified/Conglomerate Service    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.00% 0.00% [6],[7],[8],[10],[41]
Non-Control/Non-Affiliate investments | Preferred equity    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 5.30% [1],[2],[3],[5],[40] 5.60% [6],[7],[8],[10],[41]
Investments, at fair value $ 21,733,000 [40] $ 17,719,000 [41]
Non-Control/Non-Affiliate investments | Preferred equity | Beverage, Food, and Tobacco    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.00% [1],[2],[3],[5],[40] 0.00% [6],[7],[8],[10],[41]
Non-Control/Non-Affiliate investments | Preferred equity | Buildings and Real Estate    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.10% [1],[2],[3],[5],[40] 0.20% [6],[7],[8],[10],[41]
Non-Control/Non-Affiliate investments | Preferred equity | Diversified/Conglomerate Manufacturing    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.30% [1],[2],[3],[5],[40] 0.80% [6],[7],[8],[10],[41]
Non-Control/Non-Affiliate investments | Preferred equity | Diversified/Conglomerate Service    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 2.40% [1],[2],[3],[5],[40] 2.60% [6],[7],[8],[10],[41]
Investments, at fair value $ 9,654,000 [40] $ 8,151,000 [41]
Non-Control/Non-Affiliate investments | Preferred equity | Healthcare, Education, and Childcare    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.80% [1],[2],[3],[5],[40] 0.30% [6],[7],[8],[10],[41]
Non-Control/Non-Affiliate investments | Preferred equity | Telecommunications    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.00% [1],[2],[3],[5],[40] 1.10% [6],[7],[8],[10],[41]
Investments, at fair value [41]   $ 3,187,000
Non-Control/Non-Affiliate investments | Preferred equity | Automobile    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.00% [1],[2],[3],[5],[40] 0.00% [6],[7],[8],[10],[41]
Non-Control/Non-Affiliate investments | Preferred equity | Oil and Gas    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 1.70% [1],[2],[3],[5],[40] 0.60% [6],[7],[8],[10],[41]
Investments, at fair value $ 6,826,000 [40] $ 2,028,000 [41]
Non-Control/Non-Affiliate investments | Common equity/equivalents    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 7.30% [1],[2],[3],[5],[40] 11.10% [6],[7],[8],[10],[41]
Investments, at fair value $ 29,672,000 [40] $ 35,143,000 [41]
Non-Control/Non-Affiliate investments | Common equity/equivalents | Aerospace and Defense    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 4.70% [1],[2],[3],[5],[40] 4.70% [6],[7],[8],[10],[41]
Investments, at fair value $ 19,116,000 [40] $ 14,751,000 [41]
Non-Control/Non-Affiliate investments | Common equity/equivalents | Beverage, Food, and Tobacco    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.80% [1],[2],[3],[5],[40] 0.70% [6],[7],[8],[10],[41]
Investments, at fair value $ 3,284,000 [40] $ 2,172,000 [41]
Non-Control/Non-Affiliate investments | Common equity/equivalents | Buildings and Real Estate    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.00% [1],[2],[3],[5],[40] 0.00% [6],[7],[8],[10],[41]
Non-Control/Non-Affiliate investments | Common equity/equivalents | Diversified/Conglomerate Manufacturing    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.00% [1],[2],[3],[5],[40] 0.60% [6],[7],[8],[10],[41]
Investments, at fair value [40] $ 0  
Non-Control/Non-Affiliate investments | Common equity/equivalents | Diversified/Conglomerate Service    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.10% [1],[2],[3],[5],[40] 0.10% [6],[7],[8],[10],[41]
Non-Control/Non-Affiliate investments | Common equity/equivalents | Healthcare, Education, and Childcare    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 1.50% [1],[2],[3],[5],[40] 2.50% [6],[7],[8],[10],[41]
Investments, at fair value $ 6,002,000 [40] $ 7,775,000 [41]
Non-Control/Non-Affiliate investments | Common equity/equivalents | Machinery    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.10% [1],[2],[3],[5],[40] 0.00% [6],[7],[8],[10],[41]
Non-Control/Non-Affiliate investments | Common equity/equivalents | Telecommunications    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.00% [1],[2],[3],[5],[40] 0.00% [6],[7],[8],[10],[41]
Non-Control/Non-Affiliate investments | Common equity/equivalents | Automobile    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.10% [1],[2],[3],[5],[40] 0.00% [6],[7],[8],[10],[41]
Non-Control/Non-Affiliate investments | Common equity/equivalents | Oil and Gas    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.00% [1],[2],[3],[5],[40] 0.00% [6],[7],[8],[10],[41]
Investments, at fair value $ 146,000 [40] $ 50,000 [41]
Non-Control/Non-Affiliate investments | Common equity/equivalents | Personal and Non-Durable Consumer Products (Manufacturing Only)    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.00% [1],[2],[3],[5],[40] 0.00% [6],[7],[8],[10],[41]
Non-Control/Non-Affiliate investments | Common equity/equivalents | Textiles and Leather    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets [6],[7],[8],[10],[41]   2.50%
Affiliate investments    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 2.60% [1],[2],[3],[5],[42] 12.40% [6],[7],[8],[10],[43]
Investments, at fair value $ 10,421,000 [42] $ 39,091,000 [43]
Affiliate investments | Secured first lien debt    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.70% [1],[2],[3],[5],[42] 11.00% [6],[7],[8],[10],[43]
Investments, at fair value $ 2,895,000 $ 34,804,000 [43]
Affiliate investments | Secured first lien debt | Diversified/Conglomerate Manufacturing    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.70% 0.80% [6],[7],[8],[10],[43]
Affiliate investments | Secured first lien debt | Diversified/Conglomerate Service    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.00% 10.20% [6],[7],[8],[10],[43]
Investments, at fair value $ 0 $ 32,254,000 [43]
Affiliate investments | Preferred equity    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 1.30% [1],[2],[3],[5],[42] 1.20% [6],[7],[8],[10],[43]
Investments, at fair value $ 5,122,000 [42] $ 3,640,000 [43]
Affiliate investments | Preferred equity | Diversified/Conglomerate Manufacturing    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.00% [1],[2],[3],[5],[42] 0.00% [6],[7],[8],[10],[43]
Affiliate investments | Preferred equity | Diversified/Conglomerate Service    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 1.10% [1],[2],[3],[5],[42] 0.90% [6],[7],[8],[10],[43]
Affiliate investments | Preferred equity | Personal and Non-Durable Consumer Products (Manufacturing Only)    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.20% [1],[2],[3],[5],[42] 0.30% [6],[7],[8],[10],[43]
Affiliate investments | Common equity/equivalents    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.60% [1],[2],[3],[5],[42] 0.20% [6],[7],[8],[10],[43]
Investments, at fair value [43]   $ 647,000
Affiliate investments | Common equity/equivalents | Personal and Non-Durable Consumer Products (Manufacturing Only)    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.60% 0.20% [6],[7],[8],[10],[43]
Control investments    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 7.50% [1],[2],[3],[5],[44] 11.30% [6],[7],[8],[10],[45]
Investments, at fair value $ 30,850,000 [44] $ 35,713,000 [45]
Control investments | Secured first lien debt    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 3.90% [1],[2],[3],[5],[44] 4.90% [6],[7],[8],[10],[45]
Investments, at fair value $ 16,120,000 [44] $ 15,423,000
Control investments | Secured first lien debt | Diversified/Conglomerate Manufacturing    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.90% [1],[2],[3],[5],[44] 1.00% [6],[7],[8],[10],[45]
Control investments | Secured first lien debt | Personal and Non-Durable Consumer Products (Manufacturing Only)    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 2.80% [1],[2],[3],[5],[44] 3.60% [6],[7],[8],[10],[45]
Investments, at fair value $ 11,293,000 [44] $ 11,393,000 [45]
Control investments | Secured first lien debt | Printing and Publishing    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.20% [1],[2],[3],[5],[44] 0.30% [6],[7],[8],[10],[45]
Investments, at fair value [45]   $ 15,423,000
Control investments | Secured second lien debt    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 1.80% [1],[2],[3],[5],[44] 2.40% [6],[7],[8],[10],[45]
Control investments | Secured second lien debt | Automobile    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 1.80% 2.40% [6],[7],[8],[10],[45]
Control investments | Unsecured debt    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.00% 0.00% [6],[7],[8],[10],[45]
Control investments | Unsecured debt | Diversified/Conglomerate Manufacturing    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.00% 0.00% [6],[7],[8],[10],[45]
Control investments | Preferred equity    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.00% [1],[2],[3],[5],[44] 1.80% [6],[7],[8],[10],[45]
Control investments | Preferred equity | Personal and Non-Durable Consumer Products (Manufacturing Only)    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.00% 1.80% [6],[7],[8],[10],[45]
Control investments | Common equity/equivalents    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 1.80% [1],[2],[3],[5],[44] 2.20% [6],[7],[8],[10],[45]
Investments, at fair value $ 7,305,000 [44] $ 6,938,000 [45]
Control investments | Common equity/equivalents | Diversified/Conglomerate Manufacturing    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.00% [1],[2],[3],[5],[44] 0.00% [6],[7],[8],[10],[45]
Investments, at fair value $ 0 $ 0 [45]
Control investments | Common equity/equivalents | Machinery    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.10% [1],[2],[3],[5],[44] 1.10% [6],[7],[8],[10],[45]
Control investments | Common equity/equivalents | Automobile    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 1.00% [1],[2],[3],[5],[44] 0.40% [6],[7],[8],[10],[45]
Control investments | Common equity/equivalents | Printing and Publishing    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.70% [1],[2],[3],[5],[44] 0.70%
[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 3Investments 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] Fair value was based on net asset value provided by the fund as a practical expedient.
[12] Security is non-income producing.
[13] 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.
[14] 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.
[15] Fair value was based on the indicative bid price on or near September 30, 2023, offered by the respective syndication agent’s trading desk.
[16] Fair value was based on the indicative bid price on or near September 30, 2022, offered by the respective syndication agent’s trading desk.
[17] Fair value was based on an internal yield analysis or on estimates of value submitted by a third party valuation firm.
[18] Fair value was based on an internal yield analysis or on estimates of value submitted by a third party valuation firm.
[19] 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.
[20] Security is non-income producing.
[21] The cash interest rate on this investment was indexed to the 30-day SOFR, which was 3.04% as of September 30, 2022.
[22] 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.
[23] 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.
[24] The cash interest rate on this investment was indexed to 90-day SOFR, which was 5.40% as of September 30, 2023.
[25] The cash interest rate on this investment was indexed to 90-day LIBOR, which was 3.75% as of September 30, 2022.
[26] Investment maturity date has passed. Investment continues to make applicable interest payments.
[27] 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.
[28] Debt security has a fixed interest rate.
[29] Debt security is on non-accrual status.
[30] Debt security has a fixed interest rate.
[31] 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.
[32] 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.
[33] Debt security does not have a stated interest rate that is payable thereon.
[34] Fair value was based on net asset value provided by the fund as a practical expedient.
[35] 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.
[36] Fair value was based on the expected exit or payoff amount, where such event has occurred or is expected to occur imminently
[37] Investment was exited subsequent to September 30, 2022.
[38] 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.
[39] 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.
[40] Non-Control/Non-Affiliate investments, as defined by the 1940 Act, are those that are neither Control nor Affiliate investments and in which we own less than 5.0% of the issued and outstanding voting securities.
[41] Non-Control/Non-Affiliate investments, as defined by the 1940 Act, are those that are neither Control nor Affiliate investments and in which we own less than 5.0% of the issued and outstanding voting securities.
[42] 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.
[43] 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.
[44] 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.
[45] 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.