Annual report [Section 13 and 15(d), not S-K Item 405]

CONSOLIDATED SCHEDULE OF INVESTMENTS (Parentheticals)

v3.25.3
CONSOLIDATED SCHEDULE OF INVESTMENTS (Parentheticals) - USD ($)
$ in Thousands
Sep. 30, 2025
Sep. 30, 2024
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 178.20% [1],[2],[3],[4],[5] 169.10% [6],[7],[8],[9],[10]
Investment, interest rate, paid in cash 4.13%  
Cash equivalents, net assets, percentage 6.60% [1],[2],[3],[4] 0.50% [6],[7],[8],[9]
Investment and cash equivalents, net assets, percentage 184.80% [1],[2],[3],[4] 169.60% [6],[7],[8],[9]
Investments, at fair value $ 859,124 [5] $ 796,260 [10]
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 0.60% 0.10%
Debt instrument, leverage maturity, terms 2 years 2 years
Cumulative gross unrealized depreciation $ 59,700 $ 66,100
Cumulative net unrealized appreciation 34,100 85,800
Cumulative gross unrealized appreciation (depreciation) for federal income tax purposes 25,500 19,700
Based on a tax cost 884,700 $ 776,500
Secured Overnight Financing Rate (SOFR)    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash   4.85%
Secured Overnight Financing Rate (SOFR) _90 day    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash   4.59%
Collateral Pledged    
Schedule of Investments [Line Items]    
Investments, at fair value 754,600 $ 714,400
Investment, Identifier [Axis]: Ohio Armor Holdings, LLC – Common Equity    
Schedule of Investments [Line Items]    
Investments, at fair value [11],[12] 1,184  
Investment, Identifier [Axis]: Viron International Corp. – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value [11],[12],[13] $ 0  
Investment, Identifier [Axis]: 8th Avenue Food & Provisions, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[14]   7.90%
Investment, interest rate, paid in cash [6],[7],[8],[9],[14]   12.70%
Investments, at fair value [14]   $ 3,241
Investment, Identifier [Axis]: ALS Education, LLC – Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[4],[15] 6.00%  
Investment, interest rate, paid in cash [1],[2],[3],[4],[15] 10.10%  
Line of credit facility, available [1],[2],[3],[4],[15] $ 6,000  
Investments, at fair value [15] $ 0  
Investment, Identifier [Axis]: ALS Education, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 6.00% [1],[2],[3],[4],[15] 6.80% [6],[7],[8],[9],[16]
Investment, interest rate, paid in cash 10.10% [1],[2],[3],[4],[15] 11.60% [6],[7],[8],[9],[16]
Line of credit facility, available $ 3,000 [1],[2],[3],[4],[15] $ 3,000 [6],[7],[8],[9],[16]
Investments, at fair value $ 0 [15] $ 0 [16]
Investment, Identifier [Axis]: ALS Education, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 6.00% [1],[2],[3],[4],[15] 6.80% [6],[7],[8],[9],[16]
Investment, interest rate, paid in cash 10.10% [1],[2],[3],[4],[15] 11.60% [6],[7],[8],[9],[16]
Investments, at fair value $ 30,360 [15] $ 31,997 [16]
Investment, Identifier [Axis]: Alsay Incorporated – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 5,000 [11],[12] 0
Investment, Identifier [Axis]: Alsay Incorporated – Term Debt    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash [1],[2],[3],[4],[12],[17] 12.80%  
Investments, at fair value $ 10,000 [12],[17] 0
Investment, Identifier [Axis]: Altior Healthcare, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[4],[15] 6.50%  
Investment, interest rate, paid in cash [1],[2],[3],[4],[15] 10.60%  
Investments, at fair value [15] $ 46,920  
Investment, Identifier [Axis]: Antenna Research Associates, Inc. – Common Equity Units    
Schedule of Investments [Line Items]    
Investments, at fair value [18],[19],[20]   $ 59,423
Investment, Identifier [Axis]: Antenna Research Associates, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[19],[20]   10.00%
Investment, interest rate, paid in cash [6],[7],[8],[9],[19],[20]   14.80%
Investment, interest rate, paid in kind [6],[7],[8],[9],[19],[20]   4.00%
Investments, at fair value 17 [12],[17] $ 31,267 [19],[20]
Investment, Identifier [Axis]: Arc Drilling Holdings LLC – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 9,096 [11],[12] $ 4,816 [18],[19]
Investment, Identifier [Axis]: Arc Drilling Holdings LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 6.80% [1],[2],[3],[4],[15] 7.00% [6],[7],[8],[9],[16]
Investment, interest rate, paid in cash 10.90% [1],[2],[3],[4],[15] 11.80% [6],[7],[8],[9],[16]
Line of credit facility, available $ 3,875 [1],[2],[3],[4],[15] $ 4,000 [6],[7],[8],[9],[16]
Investments, at fair value $ 1,125 [15] $ 1,000 [16]
Investment, Identifier [Axis]: Arc Drilling Holdings LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 6.80% [1],[2],[3],[4],[15] 7.00% [6],[7],[8],[9],[16]
Investment, interest rate, paid in cash 10.90% [1],[2],[3],[4],[15] 11.80% [6],[7],[8],[9],[16]
Investments, at fair value $ 16,160 [15] $ 16,000 [16]
Investment, Identifier [Axis]: Axios Industrial Group, LLC – Term Debt 1    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 11.60% [1],[2],[3],[4],[15] 9.60% [6],[7],[8],[9],[16]
Investment, interest rate, paid in cash 0.00% [1],[2],[3],[4],[15] 14.40% [6],[7],[8],[9],[16]
Investment, interest rate, paid in kind [1],[2],[3],[4],[15] 15.70%  
Investments, at fair value $ 16,197 [15] $ 11,357 [16]
Investment, Identifier [Axis]: Axios Industrial Group, LLC – Term Debt 2    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16]   12.60%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16]   17.40%
Investment, interest rate, paid in kind [1],[2],[3],[4],[15],[17] 18.00%  
Investments, at fair value $ 2,509 [15],[17] $ 3,008 [16]
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Common Stock Warrant    
Schedule of Investments [Line Items]    
Investments, at fair value [18],[19],[21]   $ 0
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Line of Credit 1    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 2.00% [1],[2],[3],[4],[12],[13] 2.00% [6],[7],[8],[9],[19],[22]
Investment, interest rate, paid in cash 7.00% [1],[2],[3],[4],[12],[13] 7.00% [6],[7],[8],[9],[19],[22]
Line of credit facility, available $ 0 [1],[2],[3],[4],[12],[13] $ 0 [6],[7],[8],[9],[19],[22]
Investments, at fair value $ 559 [12],[13] $ 471 [19],[21],[22]
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Line of Credit 2    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 2.00% [1],[2],[3],[4],[12],[13] 2.00% [6],[7],[8],[9],[19],[22]
Investment, interest rate, paid in cash 7.00% [1],[2],[3],[4],[12],[13] 7.00% [6],[7],[8],[9],[19],[22]
Line of credit facility, available $ 0 [1],[2],[3],[4],[12],[13] $ 127 [6],[7],[8],[9],[19],[22]
Investments, at fair value 191 [12],[13] $ 115 [19],[22]
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value [11],[12],[13] $ 0  
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 2.00% [1],[2],[3],[4],[12],[13] 2.00% [6],[7],[8],[9],[19],[22]
Investment, interest rate, paid in cash 7.00% [1],[2],[3],[4],[12],[13] 7.00% [6],[7],[8],[9],[19],[22]
Investments, at fair value $ 2,542 [12],[13] $ 2,139 [19],[22]
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.(S) – Common Stock Warrant    
Schedule of Investments [Line Items]    
Investments, at fair value [11],[12],[13] 0  
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.(S) – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value [18],[19],[21]   $ 0
Investment, Identifier [Axis]: Cafe Zupas – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16]   7.50%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16]   12.30%
Line of credit facility, available [6],[7],[8],[9],[16]   $ 700
Investments, at fair value [16]   $ 1,061
Investment, Identifier [Axis]: Café Zupas – Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16]   7.50%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16]   12.30%
Line of credit facility, available [6],[7],[8],[9],[16]   $ 3,150
Investments, at fair value [16]   $ 7,424
Investment, Identifier [Axis]: Café Zupas – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16]   7.50%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16]   12.30%
Investments, at fair value [16]   $ 26,513
Investment, Identifier [Axis]: Canopy Safety Brands, LLC – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value 3,703 [11],[12],[23] 2,959 [19],[24]
Investment, Identifier [Axis]: Canopy Safety Brands, LLC – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value 1,006 [11],[12],[23] 931 [18],[19],[24]
Investment, Identifier [Axis]: Canopy Safety Brands, LLC—Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value 3,703 2,959
Investment, Identifier [Axis]: Canopy Safety Brands, LLC—Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value 1,006 931
Investment, Identifier [Axis]: Control Investment - Engineering Manufacturing Technologies, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investments, at fair value 17,561 0
Investment, Identifier [Axis]: Control Investment - Technical Resource Management, LLC – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value 0 0
Investment, Identifier [Axis]: Control Investment - Technical Resource Management, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investments, at fair value 21,347 $ 0
Investment, Identifier [Axis]: DKI Ventures, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash [6],[7],[8],[9],[19],[25]   9.00%
Line of credit facility, available [6],[7],[8],[9],[19],[25]   $ 25
Investments, at fair value [19],[25]   $ 159
Investment, Identifier [Axis]: DKI Ventures, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash [6],[7],[8],[9],[19],[25]   9.00%
Investments, at fair value [19],[25]   $ 2,684
Investment, Identifier [Axis]: Defiance Integrated Technologies, Inc. – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value 0 [11],[12] $ 2,949 [18],[19]
Investment, Identifier [Axis]: Defiance Integrated Technologies, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[19]   9.60%
Investment, interest rate, paid in cash [6],[7],[8],[9],[19]   14.40%
Investments, at fair value 8,792 [12] $ 8,547 [19]
Investment, Identifier [Axis]: Defiance Integrated Technologies, Inc.—Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 0 2,949
Investment, Identifier [Axis]: Defiance Integrated Technologies, Inc.—Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[4],[12] 9.60%  
Investment, interest rate, paid in cash [1],[2],[3],[4],[12] 13.70%  
Investments, at fair value $ 8,792 $ 8,547
Investment, Identifier [Axis]: Dreyfus Treasury Obligations Cash Management Fund    
Schedule of Investments [Line Items]    
Cash equivalents, market yield 3.77% [1],[2],[3],[4],[26] 4.58% [6],[7],[8],[9],[27]
Investment, Identifier [Axis]: Dutch Gold Honey, Inc. – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value [11],[12],[13] $ 3,333  
Investment, Identifier [Axis]: Dutch Gold Honey, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[4],[13],[15] 7.50%  
Investment, interest rate, paid in cash [1],[2],[3],[4],[13],[15] 11.60%  
Investments, at fair value [13],[15] $ 18,184  
Investment, Identifier [Axis]: ENET Holdings, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16]   7.30%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16]   12.10%
Line of credit facility, available [6],[7],[8],[9],[16]   $ 2,500
Investments, at fair value [16]   $ 0
Investment, Identifier [Axis]: ENET Holdings, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16]   7.30%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16]   12.10%
Investments, at fair value [16]   $ 21,973
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 0 [11],[12],[13],[23] $ 0 [18],[19],[21],[24]
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 5.50% [1],[2],[3],[4],[12],[13],[23],[28] 5.50% [6],[7],[8],[9],[19],[22],[24]
Investment, interest rate, paid in cash 9.60% [1],[2],[3],[4],[12],[13],[23],[28] 10.30% [6],[7],[8],[9],[19],[22],[24]
Investments, at fair value $ 513 [12],[13],[23],[28] $ 380 [19],[21],[22],[24]
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc.—Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value 0 0
Investment, Identifier [Axis]: Eegee Acquisition Corp. – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 4,858 [11],[12] 0
Investment, Identifier [Axis]: Eegee Acquisition Corp. – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[4],[12] 7.00%  
Investment, interest rate, paid in cash [1],[2],[3],[4],[12] 11.10%  
Line of credit facility, available [1],[2],[3],[4],[12] $ 3,250  
Investments, at fair value 12,750 [12] $ 0
Investment, Identifier [Axis]: Eegee’s LLC – Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16]   7.80%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16]   8.00%
Investment, interest rate, paid in kind [6],[7],[8],[9],[16]   4.60%
Line of credit facility, available [6],[7],[8],[9],[16]   $ 0
Investments, at fair value [16]   $ 2,380
Investment, Identifier [Axis]: Eegee’s LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16]   7.80%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16]   12.60%
Line of credit facility, available [6],[7],[8],[9],[16]   $ 500
Investments, at fair value [16]   $ 1,135
Investment, Identifier [Axis]: Eegee’s LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16]   7.80%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16]   8.00%
Investment, interest rate, paid in kind [6],[7],[8],[9],[16]   4.60%
Investments, at fair value [16]   $ 13,486
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value 6,914 [11],[12],[23] 3,168 [18],[19],[24]
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC—Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value 6,914 3,168
Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 0 [11],[12] $ 0 [18],[19]
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],[4],[12] 8.30% [6],[7],[8],[9],[19]
Investment, interest rate, paid in cash 12.40% [1],[2],[3],[4],[12] 13.10% [6],[7],[8],[9],[19]
Line of credit facility, available $ 1,900 [1],[2],[3],[4],[12] $ 3,000 [6],[7],[8],[9],[19]
Investments, at fair value $ 834 [12] $ 0 [19]
Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 8.30% [1],[2],[3],[4],[12] 8.30% [6],[7],[8],[9],[19]
Investment, interest rate, paid in cash 8.00% [1],[2],[3],[4],[12] 10.00% [6],[7],[8],[9],[19]
Investment, interest rate, paid in kind 4.40% [1],[2],[3],[4],[12] 3.10% [6],[7],[8],[9],[19]
Investments, at fair value $ 17,561 [12] $ 19,283 [19]
Investment, Identifier [Axis]: FES Resources Holdings LLC – Common Equity Units    
Schedule of Investments [Line Items]    
Investments, at fair value [18],[19]   0
Investment, Identifier [Axis]: FES Resources Holdings LLC – Preferred Equity Units    
Schedule of Investments [Line Items]    
Investments, at fair value [18],[19]   $ 0
Investment, Identifier [Axis]: FES Resources Holdings LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash 4.50% [1],[2],[3],[4],[12],[17] 4.50% [6],[7],[8],[9],[19],[25]
Investments, at fair value $ 0 [12],[17] $ 163 [19],[25]
Investment, Identifier [Axis]: First Citizens Premium Money Market Savings    
Schedule of Investments [Line Items]    
Cash equivalents, market yield [1],[2],[3],[4],[26] 0.40%  
Investment, Identifier [Axis]: Fix-It Group, LLC – Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16]   7.10%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16]   11.90%
Line of credit facility, available [6],[7],[8],[9],[16]   $ 0
Investments, at fair value [16]   $ 6,781
Investment, Identifier [Axis]: Fix-It Group, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16]   7.10%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16]   11.90%
Line of credit facility, available [6],[7],[8],[9],[16]   $ 3,000
Investments, at fair value [16]   $ 0
Investment, Identifier [Axis]: Fix-It Group, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16]   7.10%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16]   11.90%
Investments, at fair value [16]   $ 13,457
Investment, Identifier [Axis]: Foodservices Brand Group, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[4],[15] 6.50%  
Investment, interest rate, paid in cash [1],[2],[3],[4],[15] 10.60%  
Line of credit facility, available [1],[2],[3],[4],[15] $ 10,000  
Investments, at fair value [15] $ 0  
Investment, Identifier [Axis]: Foodservices Brand Group, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[4],[15] 6.50%  
Investment, interest rate, paid in cash [1],[2],[3],[4],[15] 10.60%  
Investments, at fair value [15] $ 30,000  
Investment, Identifier [Axis]: Freedom Dental Management, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[4],[15] 7.30%  
Investment, interest rate, paid in cash [1],[2],[3],[4],[15] 11.40%  
Investments, at fair value [15] $ 15,300  
Investment, Identifier [Axis]: Frontier Financial Group Inc. – Convertible Debt    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash 6.00% [1],[2],[3],[4],[12],[17] 6.00% [6],[7],[8],[9],[25]
Investments, at fair value [19],[25]   $ 32
Investment, Identifier [Axis]: Frontier Financial Group Inc. – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 0 [11],[12] 0 [18],[19]
Investment, Identifier [Axis]: Frontier Financial Group Inc. – Preferred Stock Warrant    
Schedule of Investments [Line Items]    
Investments, at fair value 0 [11],[12] 0 [18],[19]
Investment, Identifier [Axis]: GFRC 360, LLC – Common Stock Warrants    
Schedule of Investments [Line Items]    
Investments, at fair value $ 0 [11],[12] $ 0 [18],[19]
Investment, Identifier [Axis]: GFRC 360, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 8.00% [1],[2],[3],[4],[15] 8.00% [6],[7],[8],[9],[16]
Investment, interest rate, paid in cash 12.10% [1],[2],[3],[4],[15] 12.80% [6],[7],[8],[9],[16]
Line of credit facility, available $ 95 [1],[2],[3],[4],[15] $ 95 [6],[7],[8],[9],[16]
Investments, at fair value 1,355 [15] 1,355 [16]
Investment, Identifier [Axis]: GFRC 360, LLC – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 214 [11],[12] $ 0 [18],[19]
Investment, Identifier [Axis]: GFRC 360, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 8.00% [1],[2],[3],[4],[15] 8.00% [6],[7],[8],[9],[16]
Investment, interest rate, paid in cash 12.10% [1],[2],[3],[4],[15] 12.80% [6],[7],[8],[9],[16]
Investments, at fair value $ 1,000 [15] $ 1,000 [16]
Investment, Identifier [Axis]: GSM MidCo LLC – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value 1,980 [11],[12] 1,583 [18],[19]
Investment, Identifier [Axis]: Giving Home Health Care, LLC – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value [11],[12] $ 5,333  
Investment, Identifier [Axis]: Giving Home Health Care, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[4],[15] 6.30%  
Investment, interest rate, paid in cash [1],[2],[3],[4],[15] 10.40%  
Investments, at fair value [15] $ 35,252  
Investment, Identifier [Axis]: Giving Home Health Care, LLC – Warrant    
Schedule of Investments [Line Items]    
Investments, at fair value [18],[19]   3,995
Investment, Identifier [Axis]: Gladstone Alternative Income Fund – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 5,075 [11],[23],[29] $ 0
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 10.00% [1],[2],[3],[4],[15] 8.00% [6],[7],[8],[9],[16],[30]
Investment, interest rate, paid in cash 12.10% [1],[2],[3],[4],[15] 12.80% [6],[7],[8],[9],[16],[30]
Investment, interest rate, paid in kind [1],[2],[3],[4],[15] 2.00%  
Line of credit facility, available $ 0 [1],[2],[3],[4],[15] $ 110 [6],[7],[8],[9],[16],[30]
Investments, at fair value 1,739 [15] 1,677 [16],[30]
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 2,290 [11],[12] $ 1,047 [18],[19]
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[4],[15] 10.00%  
Investment, interest rate, paid in cash [1],[2],[3],[4],[15] 12.10%  
Investment, interest rate, paid in kind [1],[2],[3],[4],[15] 2.00%  
Investments, at fair value [15] $ 18,580  
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Term Debt 1    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16],[30]   8.00%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16],[30]   12.80%
Investments, at fair value [16],[30]   $ 15,399
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Term Debt 2    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16],[30]   8.00%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16],[30]   12.80%
Investments, at fair value [16],[30]   $ 3,102
Investment, Identifier [Axis]: Imperative Holdings Corporation – Preferred Equity Units    
Schedule of Investments [Line Items]    
Investments, at fair value $ 2,450 [11],[12] $ 2,275 [18],[19]
Investment, Identifier [Axis]: Imperative Holdings Corporation – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16]   9.80%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16]   14.60%
Investments, at fair value [16]   $ 18,015
Investment, Identifier [Axis]: Imperative Holdings Corporation – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[4],[15] 9.80%  
Investment, interest rate, paid in cash [1],[2],[3],[4],[15] 13.90%  
Investments, at fair value [15] $ 15,015  
Investment, Identifier [Axis]: Leadpoint Business Services, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 8.50% [1],[2],[3],[4],[15],[31] 8.50% [6],[7],[8],[9],[16]
Investment, interest rate, paid in cash 12.60% [1],[2],[3],[4],[15],[31] 13.30% [6],[7],[8],[9],[16]
Investments, at fair value $ 28,398 [15],[31] $ 26,010 [16]
Investment, Identifier [Axis]: Leeds Novamark Capital I, L.P. – Limited Partnership Interest    
Schedule of Investments [Line Items]    
Line of credit facility, available 843 [1],[2],[3],[4],[11],[29],[32] 843 [6],[7],[8],[9]
Investments, at fair value $ 36 [11],[29],[32] $ 38 [18],[33],[34]
Investment, Identifier [Axis]: Lonestar EMS, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash 12.00% [1],[2],[3],[4],[12],[17] 12.00% [6],[7],[8],[9],[19],[25]
Investments, at fair value $ 4,450 [12],[17] $ 4,200 [19],[25]
Investment, Identifier [Axis]: Lonestar EMS, LLC - Common Units    
Schedule of Investments [Line Items]    
Investments, at fair value 4,225 8,214
Investment, Identifier [Axis]: Lonestar EMS, LLC – Common Units    
Schedule of Investments [Line Items]    
Investments, at fair value $ 4,225 [11],[12] 8,214 [18],[19]
Investment, Identifier [Axis]: MASSiv Brands, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash [1],[2],[3],[4],[15],[17] 10.00%  
Investment, interest rate, paid in kind [1],[2],[3],[4],[15],[17] 5.00%  
Investments, at fair value [15],[17] $ 25,313  
Investment, Identifier [Axis]: MCG Energy Solutions, LLC – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value [18],[19]   $ 9,954
Investment, Identifier [Axis]: MCG Energy Solutions, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[19]   7.60%
Investment, interest rate, paid in cash [6],[7],[8],[9],[19]   12.40%
Investment, interest rate, paid in kind [6],[7],[8],[9],[19]   3.50%
Investments, at fair value [19]   $ 20,290
Investment, Identifier [Axis]: NeoGraf Solutions LLC – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 1,067 [11],[12] $ 859 [18],[19]
Investment, Identifier [Axis]: NeoGraf Solutions LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 7.00% [1],[2],[3],[4],[15] 7.00% [6],[7],[8],[9],[16]
Investment, interest rate, paid in cash 11.00% [1],[2],[3],[4],[15] 11.00% [6],[7],[8],[9],[16]
Investment, interest rate, paid in kind 0.10% [1],[2],[3],[4],[15] 0.80% [6],[7],[8],[9],[16]
Line of credit facility, available $ 4,500 [1],[2],[3],[4],[15] $ 4,500 [6],[7],[8],[9],[16]
Investments, at fair value $ 0 [15] $ 0 [16]
Investment, Identifier [Axis]: NeoGraf Solutions LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 7.00% [1],[2],[3],[4],[15] 7.00% [6],[7],[8],[9],[16]
Investment, interest rate, paid in cash 11.00% [1],[2],[3],[4],[15] 11.00% [6],[7],[8],[9],[16]
Investment, interest rate, paid in kind 0.10% [1],[2],[3],[4],[15] 0.80% [6],[7],[8],[9],[16]
Investments, at fair value $ 27,456 [15] $ 26,350 [16]
Investment, Identifier [Axis]: OCI, LLC – Common Units    
Schedule of Investments [Line Items]    
Investments, at fair value $ 1,111 [11],[12] $ 0 [18],[19]
Investment, Identifier [Axis]: OCI, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[4],[15] 7.50%  
Investment, interest rate, paid in cash [1],[2],[3],[4],[15] 11.60%  
Investments, at fair value [15] $ 32,000  
Investment, Identifier [Axis]: OCI, LLC – Term Debt 1    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16]   7.50%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16]   12.30%
Investments, at fair value [16]   $ 18,685
Investment, Identifier [Axis]: OCI, LLC – Term Debt 2    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash 7.00% [1],[2],[3],[4],[15],[17] 7.00% [6],[7],[8],[9],[16],[25]
Investment, interest rate, paid in kind 7.00% [1],[2],[3],[4],[15],[17] 7.00% [6],[7],[8],[9],[16],[25]
Investments, at fair value $ 2,436 [15],[17] $ 2,303 [16],[25]
Investment, Identifier [Axis]: Ohio Armor Holdings, LLC – Common Equity    
Schedule of Investments [Line Items]    
Investments, at fair value [18],[19]   $ 1,086
Investment, Identifier [Axis]: Ohio Armor Holdings, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16]   8.00%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16]   12.80%
Investments, at fair value [16]   $ 16,563
Investment, Identifier [Axis]: Pan-Am Dental, LLC – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value [11],[12] $ 6,285  
Investment, Identifier [Axis]: Pan-Am Dental, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash [1],[2],[3],[4],[15],[17] 12.00%  
Investments, at fair value [15],[17] $ 23,129  
Investment, Identifier [Axis]: Perimeter Solutions Group – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16],[20]   8.50%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16],[20]   13.30%
Investments, at fair value [16],[20]   $ 15,000
Investment, Identifier [Axis]: Quality Environmental Midco, Inc. – Preferred Equity    
Schedule of Investments [Line Items]    
Investments, at fair value [11],[12] $ 2,720  
Investment, Identifier [Axis]: Quality Environmental Midco, Inc. – Line of Credit    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash 12.00% [1],[2],[3],[4],[15],[17] 12.00% [6],[7],[8],[9],[16],[25]
Investment, interest rate, paid in kind [1],[2],[3],[4],[15],[17] 0.80%  
Line of credit facility, available $ 3,000 [1],[2],[3],[4],[15],[17] $ 3,000 [6],[7],[8],[9],[16],[25]
Investments, at fair value $ 0 [15],[17] 0 [16],[25]
Investment, Identifier [Axis]: Quality Environmental Midco, Inc. – Preferred Equity    
Schedule of Investments [Line Items]    
Investments, at fair value [18],[19]   $ 3,582
Investment, Identifier [Axis]: Quality Environmental Midco, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash 12.00% [1],[2],[3],[4],[15],[17] 12.00% [6],[7],[8],[9],[16],[25]
Investment, interest rate, paid in kind [1],[2],[3],[4],[15],[17] 0.80%  
Investments, at fair value $ 13,269 [15],[17] $ 13,390 [16],[25]
Investment, Identifier [Axis]: RF Technologies, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[4],[15] 6.30%  
Investment, interest rate, paid in kind [1],[2],[3],[4],[15] 10.40%  
Line of credit facility, available [1],[2],[3],[4],[15] $ 3,500  
Investments, at fair value [15] $ 0  
Investment, Identifier [Axis]: RF Technologies, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[4],[15] 6.30%  
Investment, interest rate, paid in cash [1],[2],[3],[4],[15] 10.40%  
Investments, at fair value [15] $ 12,735  
Investment, Identifier [Axis]: RPM Freight Systems, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[4],[15] 7.70%  
Investment, interest rate, paid in cash [1],[2],[3],[4],[15] 11.80%  
Investments, at fair value [15] $ 20,000  
Investment, Identifier [Axis]: RPM Freight Systems, LLC – Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16]   7.70%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16]   12.50%
Line of credit facility, available [6],[7],[8],[9],[16]   $ 5,000
Investments, at fair value [16]   $ 0
Investment, Identifier [Axis]: RPM Freight Systems, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16]   7.70%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16]   12.50%
Investments, at fair value [16]   $ 20,200
Investment, Identifier [Axis]: Salt & Straw, LLC – Common Warrant    
Schedule of Investments [Line Items]    
Investments, at fair value 186 [11],[12] $ 47 [18],[19]
Investment, Identifier [Axis]: Salt & Straw, LLC – Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16]   9.10%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16]   13.90%
Line of credit facility, available [6],[7],[8],[9],[16]   $ 3,500
Investments, at fair value [16]   $ 10,850
Investment, Identifier [Axis]: Salt & Straw, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16]   9.10%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16]   13.90%
Line of credit facility, available [6],[7],[8],[9],[16]   $ 2,000
Investments, at fair value [16]   0
Investment, Identifier [Axis]: Salt & Straw, LLC – Preferred Equity    
Schedule of Investments [Line Items]    
Investments, at fair value [18],[19]   9,450
Investment, Identifier [Axis]: Sea Link International IRB, Inc. – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 261 [11],[12] $ 220 [18],[19]
Investment, Identifier [Axis]: Sea Link International IRB, Inc. – Term Debt 1    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash 11.30% [1],[2],[3],[4],[15],[17] 11.30% [6],[7],[8],[9],[16],[25]
Investment, interest rate, paid in kind 2.00% [1],[2],[3],[4],[15],[17] 2.00% [6],[7],[8],[9],[16],[25]
Investments, at fair value $ 13,868 [15],[17] $ 12,331 [16],[25]
Investment, Identifier [Axis]: Sea Link International IRB, Inc. – Term Debt 2    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash 12.00% [1],[2],[3],[4],[15],[17] 12.00% [6],[7],[8],[9],[16],[25]
Investment, interest rate, paid in kind 2.00% [1],[2],[3],[4],[15],[17] 2.00% [6],[7],[8],[9],[16],[25]
Investments, at fair value $ 4,163 [15],[17] $ 4,079 [16],[25]
Investment, Identifier [Axis]: Sea Link International IRB, Inc.– Common Equity Units    
Schedule of Investments [Line Items]    
Investments, at fair value 277 [11],[12] 160 [18],[19]
Investment, Identifier [Axis]: Snif-Snax, LLC – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 1,500 [11],[12],[23] 0
Investment, Identifier [Axis]: Snif-Snax, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[4],[15],[23],[35] 6.70%  
Investment, interest rate, paid in cash [1],[2],[3],[4],[15],[23],[35] 10.80%  
Investments, at fair value $ 22,200 [15],[23],[35] 0
Investment, Identifier [Axis]: Sokol & Company Holdings, LLC – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 2,240 [11],[12],[31] $ 2,727 [18],[19]
Investment, Identifier [Axis]: Sokol & Company Holdings, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16]   6.80%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16]   11.60%
Investments, at fair value [16]   $ 8,500
Investment, Identifier [Axis]: SpaceCo Holdings, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16],[30]   6.40%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16],[30]   11.00%
Line of credit facility, available [6],[7],[8],[9],[16],[30]   $ 0
Investments, at fair value [16],[30]   $ 2,000
Investment, Identifier [Axis]: SpaceCo Holdings, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16],[30]   6.40%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16],[30]   11.00%
Investments, at fair value [16],[30]   $ 42,757
Investment, Identifier [Axis]: Springfield, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 11.10% [1],[2],[3],[4],[15] 11.10% [6],[7],[8],[9],[16]
Investment, interest rate, paid in cash 15.20% [1],[2],[3],[4],[15] 15.90% [6],[7],[8],[9],[16]
Investments, at fair value $ 30,000 [15] $ 30,000 [16]
Investment, Identifier [Axis]: TNCP Intermediate HoldCo, LLC – Common Equity Units    
Schedule of Investments [Line Items]    
Investments, at fair value $ 5,809 [11],[12] 4,312 [18],[19]
Investment, Identifier [Axis]: TNCP Intermediate HoldCo, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash [1],[2],[3],[4],[12],[17] 11.00%  
Line of credit facility, available [1],[2],[3],[4],[12],[17] $ 2,000  
Investments, at fair value 0 [12],[17] $ 0 [19],[25]
Investment, Identifier [Axis]: TNCP Intermediate HoldCo, LLC—-Line of Credit    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash [6],[7],[8],[9],[19],[25]   11.00%
Line of credit facility, available [6],[7],[8],[9],[19],[25]   $ 2,000
Investment, Identifier [Axis]: TNCP Intermediate HoldCo, LLC—Common Equity Units    
Schedule of Investments [Line Items]    
Investments, at fair value 5,809 4,312
Investment, Identifier [Axis]: Technical Resource Management, LLC – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value 0 [11],[12] 34 [18],[19]
Investment, Identifier [Axis]: Technical Resource Management, LLC – Common Warrants    
Schedule of Investments [Line Items]    
Investments, at fair value $ 0 [11],[12] $ 0
Investment, Identifier [Axis]: Technical Resource Management, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16]   8.00%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16]   12.80%
Line of credit facility, available [6],[7],[8],[9],[16]   $ 1,000
Investments, at fair value [16]   2,008
Investment, Identifier [Axis]: Technical Resource Management, LLC – Line of Credit 1    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[4],[12] 10.50%  
Investment, interest rate, paid in cash [1],[2],[3],[4],[12] 10.10%  
Investment, interest rate, paid in kind [1],[2],[3],[4],[12] 4.50%  
Line of credit facility, available [1],[2],[3],[4],[12] $ 0  
Investments, at fair value $ 2,723 [12] 0
Investment, Identifier [Axis]: Technical Resource Management, LLC – Line of Credit 2    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[4],[12] 10.50%  
Investment, interest rate, paid in cash [1],[2],[3],[4],[12] 10.10%  
Investment, interest rate, paid in kind [1],[2],[3],[4],[12] 4.50%  
Line of credit facility, available [1],[2],[3],[4],[12] $ 400  
Investments, at fair value $ 1,074 [12] $ 0
Investment, Identifier [Axis]: Technical Resource Management, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 10.50% [1],[2],[3],[4],[12] 8.00% [6],[7],[8],[9],[16]
Investment, interest rate, paid in cash 10.10% [1],[2],[3],[4],[12] 12.80% [6],[7],[8],[9],[16]
Investment, interest rate, paid in kind 4.50% [1],[2],[3],[4],[12] 2.50% [6],[7],[8],[9],[16]
Investments, at fair value $ 21,347 [12] $ 23,327 [16]
Investment, Identifier [Axis]: Technical Resource Management, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in kind [1],[2],[3],[4],[12],[17] 14.00%  
Investments, at fair value $ 316 [12],[17] $ 0
Investment, Identifier [Axis]: Torrent Photonics Holdco LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16]   9.50%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16]   14.30%
Investments, at fair value [16]   $ 12,265
Investment, Identifier [Axis]: Torrent Photonics Holdco LLC – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 2,377 [11],[12] 552 [18],[19]
Investment, Identifier [Axis]: Torrent Photonics Holdco LLC – Term Debt 1    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[4],[15] 9.50%  
Investment, interest rate, paid in cash [1],[2],[3],[4],[15] 13.60%  
Investments, at fair value [15] $ 11,645  
Investment, Identifier [Axis]: Torrent Photonics Holdco LLC – Term Debt 2    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[4],[15] 9.50%  
Investment, interest rate, paid in cash [1],[2],[3],[4],[15] 13.60%  
Investments, at fair value [15] $ 505  
Investment, Identifier [Axis]: Total Access Elevator, LLC – Common Equity    
Schedule of Investments [Line Items]    
Investments, at fair value [18],[19]   $ 1,234
Investment, Identifier [Axis]: Total Access Elevator, LLC – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value [11],[12] $ 1,500  
Investment, Identifier [Axis]: Total Access Elevator, LLC – Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 6.50% [1],[2],[3],[4],[15] 6.90% [6],[7],[8],[9],[16]
Investment, interest rate, paid in cash 10.60% [1],[2],[3],[4],[15] 11.70% [6],[7],[8],[9],[16]
Line of credit facility, available $ 0 [1],[2],[3],[4],[15] $ 2,500 [6],[7],[8],[9],[16]
Investments, at fair value $ 1,600 [15] $ 0 [16]
Investment, Identifier [Axis]: Total Access Elevator, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 6.50% [1],[2],[3],[4],[15] 6.90% [6],[7],[8],[9],[16]
Investment, interest rate, paid in cash 10.60% [1],[2],[3],[4],[15] 11.70% [6],[7],[8],[9],[16]
Line of credit facility, available $ 3,000 [1],[2],[3],[4],[15] $ 3,000 [6],[7],[8],[9],[16]
Investments, at fair value $ 0 [15] $ 0 [16]
Investment, Identifier [Axis]: Total Access Elevator, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 6.50% [1],[2],[3],[4],[15] 6.90% [6],[7],[8],[9],[16]
Investment, interest rate, paid in cash 10.60% [1],[2],[3],[4],[15] 11.70% [6],[7],[8],[9],[16]
Investments, at fair value $ 6,500 [15] $ 6,695 [16]
Investment, Identifier [Axis]: Total Safety Holdings, LLC – Common Equity    
Schedule of Investments [Line Items]    
Investments, at fair value 47 [11],[12] 101 [18],[19]
Investment, Identifier [Axis]: Triple H Food Processors, LLC – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value 2,147 [11],[12] 1,346 [18],[19]
Investment, Identifier [Axis]: Triple H Food Processors, LLC – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 197 [11],[12] $ 167 [18],[19]
Investment, Identifier [Axis]: Tube Bending Technology, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, interest rate, paid in cash [1],[2],[3],[4],[15],[17] 12.50%  
Investments, at fair value [15],[17] $ 4,955  
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],[4],[15] 7.30% [6],[7],[8],[9],[16]
Investment, interest rate, paid in cash 11.40% [1],[2],[3],[4],[15] 12.10% [6],[7],[8],[9],[16]
Line of credit facility, available $ 4,000 [1],[2],[3],[4],[15] $ 4,000 [6],[7],[8],[9],[16]
Investments, at fair value $ 0 [15] $ 0 [16]
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],[4],[15] 7.30% [6],[7],[8],[9],[16]
Investment, interest rate, paid in cash 11.40% [1],[2],[3],[4],[15] 12.10% [6],[7],[8],[9],[16]
Investments, at fair value $ 17,500 [15] $ 17,500 [16]
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],[4],[15] 6.50% [6],[7],[8],[9],[16]
Investment, interest rate, paid in cash 10.60% [1],[2],[3],[4],[15] 11.30% [6],[7],[8],[9],[16]
Line of credit facility, available $ 0 [1],[2],[3],[4],[15] $ 0 [6],[7],[8],[9],[16]
Investments, at fair value $ 1,067 [15] $ 1,108 [16]
Investment, Identifier [Axis]: Unirac Holdings, Inc. – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 6.50% [1],[2],[3],[4],[15] 6.50% [6],[7],[8],[9],[16]
Investment, interest rate, paid in cash 10.60% [1],[2],[3],[4],[15] 11.30% [6],[7],[8],[9],[16]
Line of credit facility, available $ 1,633 [1],[2],[3],[4],[15] $ 1,244 [6],[7],[8],[9],[16]
Investments, at fair value $ 589 [15] $ 978 [16]
Investment, Identifier [Axis]: Unirac Holdings, Inc. – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 6.50% [1],[2],[3],[4],[15] 6.50% [6],[7],[8],[9],[16]
Investment, interest rate, paid in cash 10.60% [1],[2],[3],[4],[15] 11.30% [6],[7],[8],[9],[16]
Investments, at fair value $ 14,325 [15] $ 14,885 [16]
Investment, Identifier [Axis]: Vet's Choice Radiology LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[4],[13],[15] 8.00%  
Investment, interest rate, paid in cash [1],[2],[3],[4],[13],[15] 12.10%  
Investments, at fair value [13],[15] $ 43,098  
Investment, Identifier [Axis]: Viron International Corp. – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[4],[13],[15] 7.00%  
Investment, interest rate, paid in cash [1],[2],[3],[4],[13],[15] 11.10%  
Investments, at fair value [13],[15] $ 18,475  
Investment, Identifier [Axis]: Viva Railings, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 6.40% [1],[2],[3],[4],[15] 7.10% [6],[7],[8],[9],[16]
Investment, interest rate, paid in cash 10.50% [1],[2],[3],[4],[15] 11.90% [6],[7],[8],[9],[16]
Line of credit facility, available $ 4,000 [1],[2],[3],[4],[15] $ 4,000 [6],[7],[8],[9],[16]
Investments, at fair value $ 0 [15] $ 0 [16]
Investment, Identifier [Axis]: Viva Railings, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 6.40% [1],[2],[3],[4],[15] 7.10% [6],[7],[8],[9],[16]
Investment, interest rate, paid in cash 10.50% [1],[2],[3],[4],[15] 11.90% [6],[7],[8],[9],[16]
Investments, at fair value $ 13,875 [15] $ 20,202 [16]
Investment, Identifier [Axis]: WB Xcel Holdings, LLC - Common Warrant    
Schedule of Investments [Line Items]    
Investments, at fair value 0 0
Investment, Identifier [Axis]: WB Xcel Holdings, LLC - Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value 0 0
Investment, Identifier [Axis]: WB Xcel Holdings, LLC – Common Units    
Schedule of Investments [Line Items]    
Investments, at fair value [11],[12] $ 0  
Investment, Identifier [Axis]: WB Xcel Holdings, LLC – Common Warrant    
Schedule of Investments [Line Items]    
Investments, at fair value [18],[19]   $ 0
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],[4],[12] 10.50% [6],[7],[8],[9],[19],[22]
Investment, interest rate, paid in cash 14.60% [1],[2],[3],[4],[12] 15.30% [6],[7],[8],[9],[19],[22]
Line of credit facility, available $ 0 [1],[2],[3],[4],[12] $ 0 [6],[7],[8],[9],[19],[22]
Investments, at fair value 3,160 [12] 3,171 [19],[22]
Investment, Identifier [Axis]: WB Xcel Holdings, LLC – Preferred Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 0 [11],[12] $ 0 [18],[19]
Investment, Identifier [Axis]: WB Xcel Holdings, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 10.50% [1],[2],[3],[4],[12] 10.50% [6],[7],[8],[9],[19],[22]
Investment, interest rate, paid in cash 14.60% [1],[2],[3],[4],[12] 15.30% [6],[7],[8],[9],[19],[22]
Investments, at fair value $ 5,997 [12] $ 6,525 [19],[22]
Investment, Identifier [Axis]: Wings ‘N More Restaurants LLC – Delayed Draw Term Loan    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[4],[15] 6.80%  
Investment, interest rate, paid in cash [1],[2],[3],[4],[15] 10.90%  
Line of credit facility, available [1],[2],[3],[4],[15] $ 5,000  
Investments, at fair value [15] $ 0  
Investment, Identifier [Axis]: Wings ‘N More Restaurants LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[4],[15] 6.80%  
Investment, interest rate, paid in cash [1],[2],[3],[4],[15] 10.90%  
Line of credit facility, available [1],[2],[3],[4],[15] $ 1,500  
Investments, at fair value [15] $ 0  
Investment, Identifier [Axis]: Wings ‘N More Restaurants LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[4],[15] 6.80%  
Investment, interest rate, paid in cash [1],[2],[3],[4],[15] 10.90%  
Investments, at fair value [15] $ 10,710  
Investment, Identifier [Axis]: WorkforceQA, LLC – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 457 [11],[12] $ 346 [18],[19]
Investment, Identifier [Axis]: WorkforceQA, LLC – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread 6.50% [1],[2],[3],[4],[15] 6.50% [6],[7],[8],[9],[16]
Investment, interest rate, paid in cash 10.60% [1],[2],[3],[4],[15] 11.30% [6],[7],[8],[9],[16]
Line of credit facility, available $ 900 [1],[2],[3],[4],[15] $ 800 [6],[7],[8],[9],[16]
Investments, at fair value $ 1,100 [15] $ 1,200 [16]
Investment, Identifier [Axis]: WorkforceQA, LLC – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[4],[15] 6.50%  
Investment, interest rate, paid in cash [1],[2],[3],[4],[15] 10.60%  
Investments, at fair value [15] $ 17,813  
Investment, Identifier [Axis]: WorkforceQA, LLC – Term Debt 1    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16]   6.50%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16]   11.30%
Investments, at fair value [16]   $ 16,306
Investment, Identifier [Axis]: WorkforceQA, LLC – Term Debt 2    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [6],[7],[8],[9],[16]   7.50%
Investment, interest rate, paid in cash [6],[7],[8],[9],[16]   12.30%
Investments, at fair value [16]   $ 2,406
Investment, Identifier [Axis]: Zero Case Holding Inc. – Common Stock    
Schedule of Investments [Line Items]    
Investments, at fair value $ 1,000 [11],[12],[23] 0
Investment, Identifier [Axis]: Zero Case Holding Inc. – Line of Credit    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[4],[12],[23] 6.40%  
Investment, interest rate, paid in cash [1],[2],[3],[4],[12],[23] 10.50%  
Line of credit facility, available [1],[2],[3],[4],[12],[23] $ 4,000  
Investments, at fair value $ 0 [12],[23] 0
Investment, Identifier [Axis]: Zero Case Holding Inc. – Term Debt    
Schedule of Investments [Line Items]    
Investment, reference rate and spread [1],[2],[3],[4],[12],[23] 6.40%  
Investment, interest rate, paid in cash [1],[2],[3],[4],[12],[23] 10.50%  
Investments, at fair value $ 12,000 [12],[23] 0
Aerospace and Defense    
Schedule of Investments [Line Items]    
Investments, at fair value 1,184 153,096
Beverage, Food, and Tobacco    
Schedule of Investments [Line Items]    
Investments, at fair value 54,605 88,327
Cargo Transportation    
Schedule of Investments [Line Items]    
Investments, at fair value 20,000 20,200
Diversified/Conglomerate Manufacturing    
Schedule of Investments [Line Items]    
Investments, at fair value 202,466 160,264
Diversified/Conglomerate Service    
Schedule of Investments [Line Items]    
Investments, at fair value 152,042 179,032
Healthcare, Education, and Childcare    
Schedule of Investments [Line Items]    
Investments, at fair value 273,262 101,707
Home and Office Furnishings, Housewares and Durable Consumer Products    
Schedule of Investments [Line Items]    
Investments, at fair value 30,000 0
Machinery    
Schedule of Investments [Line Items]    
Investments, at fair value 26,381 21,816
Automobile    
Schedule of Investments [Line Items]    
Investments, at fair value 27,361 28,286
Oil and Gas    
Schedule of Investments [Line Items]    
Investments, at fair value 17,512 20,554
Printing and Publishing    
Schedule of Investments [Line Items]    
Investments, at fair value 5,809 4,312
Personal, Food, and Miscellaneous Services    
Schedule of Investments [Line Items]    
Investments, at fair value 23,700 0
Secured first lien debt    
Schedule of Investments [Line Items]    
Investments, at fair value 622,371 554,937
Secured second lien debt    
Schedule of Investments [Line Items]    
Investments, at fair value 150,542 113,716
Unsecured debt    
Schedule of Investments [Line Items]    
Investments, at fair value 333 32
Preferred equity    
Schedule of Investments [Line Items]    
Investments, at fair value 31,214 31,346
Common equity/equivalents    
Schedule of Investments [Line Items]    
Investments, at fair value $ 54,664 $ 96,229
Non-Control/Non-Affiliate investments    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 144.50% [1],[2],[3],[4],[36] 159.50% [6],[7],[8],[9],[37]
Investments, at fair value $ 696,317 [36] $ 750,904 [37]
Non-Control/Non-Affiliate investments | Secured first lien debt    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 107.40% [1],[2],[3],[4],[36] 114.80% [6],[7],[8],[9],[37]
Investments, at fair value $ 517,762 [36] $ 540,661 [37]
Non-Control/Non-Affiliate investments | Secured first lien debt | Aerospace and Defense    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets [6],[7],[8],[9],[37]   19.70%
Investments, at fair value [37]   $ 92,587
Non-Control/Non-Affiliate investments | Secured first lien debt | Beverage, Food, and Tobacco    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 2.20% [1],[2],[3],[4],[36] 15.20% [6],[7],[8],[9],[37]
Investments, at fair value $ 10,710 [36] $ 71,349 [37]
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],[4],[36] 0.50% [6],[7],[8],[9],[37]
Investments, at fair value $ 2,355 [36] $ 2,355 [37]
Non-Control/Non-Affiliate investments | Secured first lien debt | Diversified/Conglomerate Manufacturing    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 24.90% [1],[2],[3],[4],[36] 24.20% [6],[7],[8],[9],[37]
Investments, at fair value $ 119,937 [36] $ 113,756 [37]
Non-Control/Non-Affiliate investments | Secured first lien debt | Diversified/Conglomerate Service    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 26.00% [1],[2],[3],[4],[36] 30.90% [6],[7],[8],[9],[37]
Investments, at fair value $ 125,434 [36] $ 145,716 [37]
Non-Control/Non-Affiliate investments | Secured first lien debt | Healthcare, Education, and Childcare    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 43.30% [1],[2],[3],[4],[36] 20.20% [6],[7],[8],[9],[37]
Investments, at fair value $ 208,749 [36] $ 95,010 [37]
Non-Control/Non-Affiliate investments | Secured first lien debt | Home and Office Furnishings, Housewares and Durable Consumer Products    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets [1],[2],[3],[4],[36] 6.20%  
Investments, at fair value [36] $ 30,000  
Non-Control/Non-Affiliate investments | Secured first lien debt | Machinery    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 3.60% [1],[2],[3],[4],[36] 3.60% [6],[7],[8],[9],[37]
Investments, at fair value $ 17,285 [36] $ 17,000 [37]
Non-Control/Non-Affiliate investments | Secured first lien debt | Telecommunications    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.70% [1],[2],[3],[4],[36] 0.50% [6],[7],[8],[9],[37]
Investments, at fair value $ 3,292 [36] $ 2,725 [37]
Non-Control/Non-Affiliate investments | Secured first lien debt | Oil and Gas    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.00% [1],[2],[3],[4],[36] 0.00% [6],[7],[8],[9],[37]
Non-Control/Non-Affiliate investments | Secured second lien debt    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets [37] 27.30% [1],[2],[3],[4] 22.30% [6],[7],[8],[9]
Investments, at fair value $ 131,750 [36] $ 105,169 [37]
Non-Control/Non-Affiliate investments | Secured second lien debt | Beverage, Food, and Tobacco    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 3.80% [1],[2],[3],[4],[36] 0.70% [6],[7],[8],[9],[37]
Non-Control/Non-Affiliate investments | Secured second lien debt | Cargo Transportation    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 4.10% [1],[2],[3],[4],[36] 4.30% [6],[7],[8],[9],[37]
Investments, at fair value [37]   $ 20,200
Non-Control/Non-Affiliate investments | Secured second lien debt | Diversified/Conglomerate Manufacturing    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 7.80% [1],[2],[3],[4],[36] 6.90% [6],[7],[8],[9],[37]
Investments, at fair value $ 37,391 [36] $ 32,303 [37]
Non-Control/Non-Affiliate investments | Secured second lien debt | Diversified/Conglomerate Service    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets [6],[7],[8],[9],[37]   3.20%
Non-Control/Non-Affiliate investments | Secured second lien debt | Healthcare, Education, and Childcare    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets [1],[2],[3],[4],[36] 4.80%  
Non-Control/Non-Affiliate investments | Secured second lien debt | Automobile    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets [37] 3.70% [1],[2],[3],[4] 3.40% [6],[7],[8],[9]
Investments, at fair value $ 18,031 [36] $ 16,410 [37]
Non-Control/Non-Affiliate investments | Secured second lien debt | Oil and Gas    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 3.10% [1],[2],[3],[4],[36] 3.80% [6],[7],[8],[9],[37]
Non-Control/Non-Affiliate investments | Unsecured debt    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.00% [1],[2],[3],[4],[36] 0.10% [6],[7],[8],[9],[37]
Non-Control/Non-Affiliate investments | Unsecured debt | Diversified/Conglomerate Service    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.00% [1],[2],[3],[4],[36] 0.10% [6],[7],[8],[9],[37]
Non-Control/Non-Affiliate investments | Preferred equity    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 3.50% [1],[2],[3],[4],[36] 5.80% [6],[7],[8],[9],[37]
Investments, at fair value $ 16,794 [36] $ 27,247 [37]
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],[4],[36] 2.00% [6],[7],[8],[9],[37]
Investments, at fair value [37]   $ 9,617
Non-Control/Non-Affiliate investments | Preferred equity | Buildings and Real Estate    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.00% [1],[2],[3],[4],[36] 0.00% [6],[7],[8],[9],[37]
Non-Control/Non-Affiliate investments | Preferred equity | Diversified/Conglomerate Manufacturing    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.50% [1],[2],[3],[4],[36] 0.10% [6],[7],[8],[9],[37]
Non-Control/Non-Affiliate investments | Preferred equity | Diversified/Conglomerate Service    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.60% [1],[2],[3],[4],[36] 2.90% [6],[7],[8],[9],[37]
Investments, at fair value $ 2,720 [36] $ 13,536 [37]
Non-Control/Non-Affiliate investments | Preferred equity | Healthcare, Education, and Childcare    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 1.80% [1],[2],[3],[4],[36] 0.20% [6],[7],[8],[9],[37]
Investments, at fair value [36] $ 8,575  
Non-Control/Non-Affiliate investments | Preferred equity | Telecommunications    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.00% [1],[2],[3],[4],[36] 0.00% [6],[7],[8],[9],[37]
Non-Control/Non-Affiliate investments | Preferred equity | Automobile    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.10% [1],[2],[3],[4],[36] 0.10% [6],[7],[8],[9],[37]
Non-Control/Non-Affiliate investments | Preferred equity | Oil and Gas    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.50% [1],[2],[3],[4],[36] 0.50% [6],[7],[8],[9],[37]
Investments, at fair value [37]   $ 2,275
Non-Control/Non-Affiliate investments | Common equity/equivalents    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 6.20% [1],[2],[3],[4],[36] 16.50% [6],[7],[8],[9],[37]
Investments, at fair value $ 29,994 [36] $ 77,795 [37]
Non-Control/Non-Affiliate investments | Common equity/equivalents | Aerospace and Defense    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.20% [1],[2],[3],[4],[36] 12.80% [6],[7],[8],[9],[37]
Investments, at fair value [37]   $ 60,509
Non-Control/Non-Affiliate investments | Common equity/equivalents | Beverage, Food, and Tobacco    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 1.60% [1],[2],[3],[4],[36] 0.90% [6],[7],[8],[9],[37]
Investments, at fair value $ 7,906 [36] $ 4,120 [37]
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],[4],[36] 0.00% [6],[7],[8],[9],[37]
Non-Control/Non-Affiliate investments | Common equity/equivalents | Diversified/Conglomerate Manufacturing    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.50% [1],[2],[3],[4],[36] 0.20% [6],[7],[8],[9],[37]
Investments, at fair value $ 2,178 [36] $ 859 [37]
Non-Control/Non-Affiliate investments | Common equity/equivalents | Diversified/Conglomerate Service    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.40% [1],[2],[3],[4],[36] 0.30% [6],[7],[8],[9],[37]
Investments, at fair value $ 1,957 [36] $ 1,580 [37]
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],[4],[36] 1.20% [6],[7],[8],[9],[37]
Investments, at fair value $ 7,349 [36] $ 5,650 [37]
Non-Control/Non-Affiliate investments | Common equity/equivalents | Machinery    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 1.90% [1],[2],[3],[4],[36] 1.00% [6],[7],[8],[9],[37]
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],[4],[36] 0.00% [6],[7],[8],[9],[37]
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],[4],[36] 0.10% [6],[7],[8],[9],[37]
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],[4],[36] 0.00% [6],[7],[8],[9],[37]
Investments, at fair value [37]   $ 101
Affiliate investments    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 11.20% [1],[2],[3],[4],[23] 1.60% [6],[7],[8],[9],[24]
Investments, at fair value $ 53,911 [23] $ 7,438 [24]
Affiliate investments | Secured first lien debt    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 7.20% [1],[2],[3],[4],[23] 0.10% [6],[7],[8],[9],[24]
Investments, at fair value $ 34,713 [23] $ 380
Affiliate investments | Secured first lien debt | Diversified/Conglomerate Manufacturing    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 2.60% [1],[2],[3],[4],[23] 0.10% [6],[7],[8],[9],[24]
Investments, at fair value $ 12,513 [23] $ 380
Affiliate investments | Secured first lien debt | Personal, Food, and Miscellaneous Services    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets [1],[2],[3],[4],[23] 4.60%  
Affiliate investments | Preferred equity    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 2.00% [1],[2],[3],[4],[23] 0.90% [6],[7],[8],[9],[24]
Investments, at fair value $ 9,420 [23] $ 4,099 [24]
Affiliate investments | Preferred equity | Diversified/Conglomerate Manufacturing    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.00% [1],[2],[3],[4],[23] 0.00% [6],[7],[8],[9],[24]
Affiliate investments | Preferred equity | Diversified/Conglomerate Service    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 1.40% [1],[2],[3],[4],[23] 0.70% [6],[7],[8],[9],[24]
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],[4],[23] 0.20% [6],[7],[8],[9],[24]
Affiliate investments | Preferred equity | Personal, Food, and Miscellaneous Services    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets [1],[2],[3],[4],[23] 0.30%  
Affiliate investments | Common equity/equivalents    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 2.00% [1],[2],[3],[4],[23] 0.60% [6],[7],[8],[9],[24]
Investments, at fair value $ 9,778 [23] $ 2,959
Affiliate investments | Common equity/equivalents | Diversified/Conglomerate Manufacturing    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets [1],[2],[3],[4],[23] 0.20%  
Affiliate investments | Common equity/equivalents | Finance    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets [1],[2],[3],[4],[23] 1.10%  
Affiliate investments | Common equity/equivalents | Personal and Non-Durable Consumer Products (Manufacturing Only)    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.80% [1],[2],[3],[4],[23] 0.60% [6],[7],[8],[9],[24]
Control investments    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 22.60% [1],[2],[3],[4],[38] 8.00% [6],[7],[8],[9],[39]
Investments, at fair value $ 108,896 [38] $ 37,918 [39]
Control investments | Secured first lien debt    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 14.50% [1],[2],[3],[4],[38] 3.00% [6],[7],[8],[9],[39]
Investments, at fair value $ 69,896 [38] $ 13,896 [39]
Control investments | Secured first lien debt | Beverage, Food, and Tobacco    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets [1],[2],[3],[4],[38] 2.60%  
Control investments | Secured first lien debt | Diversified/Conglomerate Manufacturing    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 4.70% [1],[2],[3],[4],[38] 0.90% [6],[7],[8],[9],[39]
Investments, at fair value $ 22,845 [38] $ 4,200
Control investments | Secured first lien debt | Healthcare, Education, and Childcare    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets [1],[2],[3],[4],[38] 5.20%  
Investments, at fair value $ 25,144 [38] $ 0
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 1.90% [1],[2],[3],[4],[38] 2.10% [6],[7],[8],[9],[39]
Investments, at fair value $ 9,157 [38] $ 9,696 [39]
Control investments | Secured first lien debt | Printing and Publishing    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.00% [1],[2],[3],[4],[38] 0.00% [6],[7],[8],[9],[39]
Control investments | Secured second lien debt    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 3.90% [1],[2],[3],[4],[38] 1.80% [6],[7],[8],[9],[39]
Investments, at fair value $ 18,792 [38] $ 8,547
Control investments | Secured second lien debt | Diversified/Conglomerate Manufacturing    
Schedule of Investments [Line Items]    
Investments, at fair value [38] $ 4,225  
Control investments | Secured second lien debt | Diversified/Conglomerate Service    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets [1],[2],[3],[4],[38] 2.10%  
Control investments | Secured second lien debt | Healthcare, Education, and Childcare    
Schedule of Investments [Line Items]    
Investments, at fair value [38] $ 0  
Control investments | Secured second lien debt | Automobile    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 1.80% [1],[2],[3],[4],[38] 1.80% [6],[7],[8],[9],[39]
Control investments | Unsecured debt    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets [1],[2],[3],[4],[38] 0.10%  
Control investments | Unsecured debt | Healthcare, Education, and Childcare    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets [1],[2],[3],[4],[38] 0.10%  
Control investments | Preferred equity    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 1.00% [1],[2],[3],[4],[38] 0.00% [6],[7],[8],[9],[39]
Investments, at fair value $ 5,000 [38] $ 0
Control investments | Preferred equity | Diversified/Conglomerate Service    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets [1],[2],[3],[4],[38] 1.00%  
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],[2],[3],[4],[38] 0.00% [6],[7],[8],[9],[39]
Control investments | Common equity/equivalents    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 3.10% [1],[2],[3],[4],[38] 3.20% [6],[7],[8],[9],[39]
Investments, at fair value $ 14,892 [38] $ 15,475 [39]
Control investments | Common equity/equivalents | Beverage, Food, and Tobacco    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets [1],[2],[3],[4],[38] 1.00%  
Control investments | Common equity/equivalents | Diversified/Conglomerate Manufacturing    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.90% [1],[2],[3],[4],[38] 1.70% [6],[7],[8],[9],[39]
Investments, at fair value $ 4,225 $ 8,214
Control investments | Common equity/equivalents | Healthcare, Education, and Childcare    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets [1],[2],[3],[4],[38] 0.00%  
Investments, at fair value $ 0 $ 0
Control investments | Common equity/equivalents | Automobile    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 0.00% [1],[2],[3],[4],[38] 0.60% [6],[7],[8],[9],[39]
Control 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],[4],[38] 0.00% [6],[7],[8],[9],[39]
Control investments | Common equity/equivalents | Printing and Publishing    
Schedule of Investments [Line Items]    
Investment owned, percent of net assets 1.20% [1],[2],[3],[4],[38] 0.90% [6],[7],[8],[9],[39]
[1] Category percentages represent the fair value of each category and subcategory as a percentage of net assets as of September 30, 2025.
[2] 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 $754.6 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 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, 2025, our investments in Leeds Novamark Capital I, L.P. (“Leeds”) and Gladstone Alternative Income Fund (“Gladstone Alternative”) are considered non-qualifying assets under Section 55 of the 1940 Act. Such non-qualifying assets represent 0.6% of total investments, at fair value, as of September 30, 2025.
[3] 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.
[4] Unless indicated otherwise, all cash interest rates are indexed to one-month Secured Overnight Financing Rate (“SOFR” or “S”), which was 4.13% as of September 30, 2025. 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.
[5] Cumulative gross unrealized depreciation for federal income tax purposes is $59.7 million; cumulative gross unrealized appreciation for federal income tax purposes is $34.1 million. Cumulative net unrealized depreciation is $25.5 million, based on a tax cost of $884.7 million.
[6] Category percentages represent the fair value of each category and subcategory as a percentage of net assets as of September 30, 2024.
[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 $714.4 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, 2024, our investment in Leeds is considered a non-qualifying asset 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, 2024.
[8] Unless indicated otherwise, all of our investments are valued using Level 3 inputs within the ASC 820 fair value hierarchy. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.
[9] Unless indicated otherwise, all cash interest rates are indexed to one-month SOFR, which was 4.85% as of September 30, 2024. 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 SOFR plus a spread. Due dates represent the contractual maturity date.
[10] Cumulative gross unrealized depreciation for federal income tax purposes is $66.1 million; cumulative gross unrealized appreciation for federal income tax purposes is $85.8 million. Cumulative net unrealized appreciation is $19.7 million, based on a tax cost of $776.5 million
[11] Security is non-income producing.
[12] 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.
[13] One or more of our affiliated funds, Gladstone Investment Corporation or Gladstone Alternative, co-invested with us in this portfolio company pursuant to an exemptive order granted by the U.S. Securities and Exchange Commission.
[14] Fair value was based on the indicative bid price on or near September 30, 2024, offered by the respective syndication agent’s trading desk.
[15] Fair value was based on an internal yield analysis or on estimates of value submitted by a third party valuation firm.
[16] Fair value was based on an internal yield analysis or on estimates of value submitted by a third party valuation firm.
[17] Debt security has a fixed interest rate.
[18] Security is non-income producing.
[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] Investment was exited subsequent to September 30, 2024.
[21] 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.
[22] Debt security is on non-accrual status.
[23] 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.
[24] 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.
[25] Debt security has a fixed interest rate.
[26] Valued using Level 1 inputs within the FASB ASC 820 fair value hierarchy. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.
[27] Valued using Level 1 inputs within the FASB ASC 820 fair value hierarchy. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.
[28] Debt security is on non-accrual status.
[29] Fair value was based on net asset value provided by the fund as a practical expedient.
[30] The cash interest rate on this investment was indexed to 90-day SOFR, which was 4.59% as of September 30, 2024.
[31] Investment was exited subsequent to September 30, 2025. Refer to Note 14 – Subsequent Events for additional information.
[32] 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.
[33] Fair value was based on net asset value provided by the fund as a practical expedient.
[34] 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.
[35] 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.
[36] 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.
[37] 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.
[38] 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.
[39] 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.