Quarterly report [Sections 13 or 15(d)]

CONSOLIDATED SCHEDULE OF INVESTMENTS (Parenthetical)

v3.25.4
CONSOLIDATED SCHEDULE OF INVESTMENTS (Parenthetical) - USD ($)
$ in Thousands
6 Months Ended 9 Months Ended
Sep. 30, 2025
[5],[6],[7],[9],[16]
Dec. 31, 2025
Mar. 31, 2025
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   205.40% [1],[2],[3],[4] 196.20% [5],[6],[7],[8],[9]
Cash equivalents, net assets, percentage   0.00% [1],[2],[3],[4] 0.30% [5],[6],[7],[9]
Cash equivalents, fair value   $ 25 $ 1,354
Investment and cash equivalents, net assets, percentage   205.40% [1],[2],[3],[4] 196.50% [5],[6],[7],[9]
Investments owned, fair value   $ 1,222,792 $ 979,320 [8]
Percentage threshold of qualified assets representing total assets in order to acquire non-qualified assets   70.00% 70.00%
Investment, interest rate, paid in cash   3.70% 4.30%
Cumulative net unrealized appreciation     $ 183,300
Cumulative gross unrealized depreciation     144,900
Cumulative gross unrealized appreciation for federal income tax purposes     38,500
Based on a tax cost     $ 940,900
Pyrotek Special Effects, Inc. And Gladstone Alternative      
Schedule of Investments [Line Items]      
Percentage of acquired non-qualifying assets of total assets   2.50% 3.60%
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Common Stock Warrants      
Schedule of Investments [Line Items]      
Investments owned, fair value   $ 0 [10],[11],[12],[13] $ 0 [14],[15],[16],[17]
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],[10],[11],[12],[18] 2.00% [5],[6],[7],[9],[14],[16],[17],[19]
Investment interest rate   7.00% [1],[2],[3],[4],[10],[11],[12],[18] 7.00% [5],[6],[7],[9],[14],[16],[17],[19]
Line of credit facility, available   $ 0 [1],[2],[3],[4],[10],[11],[12],[18] $ 0 [5],[6],[7],[9],[14],[16],[17],[19]
Investments owned, fair value   $ 3,080 [10],[11],[12],[18] $ 3,080 [14],[16],[17],[19]
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],[10],[11],[12],[18] 2.00% [5],[6],[7],[9],[14],[16],[17],[19]
Investment interest rate   7.00% [1],[2],[3],[4],[10],[11],[12],[18] 7.00% [5],[6],[7],[9],[14],[16],[17],[19]
Line of credit facility, available   $ 0 [1],[2],[3],[4],[10],[11],[12],[18] $ 120 [5],[6],[7],[9],[14],[16],[17],[19]
Investments owned, fair value   $ 1,050 [10],[11],[12],[18] 930 [14],[16],[17],[19]
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value [14],[15],[16],[17]     $ 0
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [5],[6],[7],[9],[14],[16],[17],[19]     2.00%
Investment interest rate [5],[6],[7],[9],[14],[16],[17],[19]     7.00%
Investments owned, fair value [14],[16],[17],[19]     $ 3,575
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [1],[2],[3],[4],[10],[11],[12],[18]   2.00%  
Investment interest rate [1],[2],[3],[4],[10],[11],[12],[18]   7.00%  
Investments owned, fair value [10],[11],[12],[18]   $ 4,111  
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.– Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value [10],[11],[12],[13]   0  
Investment, Identifier [Axis]: Brunswick Bowling Products, Inc. – Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value   $ 49,135 [11],[13] $ 51,877 [15],[16]
Investment, Identifier [Axis]: Brunswick Bowling Products, Inc. – Term Debt 1      
Schedule of Investments [Line Items]      
Investment, reference rate and spread   10.00% [1],[2],[3],[4],[11] 10.00% [5],[6],[7],[9],[16]
Investment interest rate   13.70% [1],[2],[3],[4],[11] 14.30% [5],[6],[7],[9],[16]
Investments owned, fair value   $ 17,700 [11] $ 17,700 [16]
Investment, Identifier [Axis]: Brunswick Bowling Products, Inc. – Term Debt 2      
Schedule of Investments [Line Items]      
Investment, reference rate and spread   10.00% [1],[2],[3],[4],[11] 10.00% [5],[6],[7],[9],[16]
Investment interest rate   13.70% [1],[2],[3],[4],[11] 14.30% [5],[6],[7],[9],[16]
Investments owned, fair value   $ 6,850 [11] $ 6,850 [16]
Investment, Identifier [Axis]: Dema/Mai Holdings, Inc - Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value [11],[13]   $ 33,201  
Investment, Identifier [Axis]: Dema/Mai Holdings, Inc – Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [1],[2],[3],[4],[11]   11.00%  
Investment interest rate [1],[2],[3],[4],[11]   14.70%  
Investments owned, fair value [11]   $ 38,250  
Investment, Identifier [Axis]: Dema/Mai Holdings, Inc. – Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value [15],[16]     $ 31,070
Investment, Identifier [Axis]: Dema/Mai Holdings, Inc. – Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [5],[6],[7],[9],[16]     11.00%
Investment interest rate [5],[6],[7],[9],[16]     15.30%
Investments owned, fair value [16]     $ 38,250
Investment, Identifier [Axis]: Detroit Defense, Inc. - Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value [10],[11],[13],[20]   $ 12,572  
Investment, Identifier [Axis]: Detroit Defense, Inc. – Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [1],[2],[3],[4],[10],[11],[20]   9.00%  
Investment interest rate [1],[2],[3],[4],[10],[11],[20]   13.00%  
Investments owned, fair value [10],[11],[20]   $ 61,305  
Investment, Identifier [Axis]: Diligent Delivery Systems – Common Stock Warrants      
Schedule of Investments [Line Items]      
Investments owned, fair value   $ 0 [11],[13] $ 0 [15],[16]
Investment, Identifier [Axis]: Diligent Delivery Systems – Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread   9.00% [1],[2],[3],[4],[11],[18] 9.00% [5],[6],[7],[9],[19],[21]
Investment interest rate   12.70% [1],[2],[3],[4],[11],[18] 13.30% [5],[6],[7],[9],[19],[21]
Investments owned, fair value   $ 9,933 [11],[18] $ 12,624 [19],[21]
Investment, Identifier [Axis]: Dreyfus Treasury Obligations Cash Management Fund      
Schedule of Investments [Line Items]      
Investment interest rate   3.43% [1],[2],[3],[4],[22] 3.97% [5],[6],[7],[9],[23]
Cash equivalents, fair value   $ 25 [22] $ 1,354 [23]
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc - Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [1],[2],[3],[4],[10],[11],[18]   5.50%  
Investment interest rate [1],[2],[3],[4],[10],[11],[18]   9.20%  
Investments owned, fair value [10],[11],[18]   $ 703  
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. - Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value [10],[11],[13]   0  
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. – Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value [14],[15],[16]     $ 0
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. – Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [5],[6],[7],[9],[14],[16],[19]     5.50%
Investment interest rate [5],[6],[7],[9],[14],[16],[19]     9.80%
Investments owned, fair value [14],[16],[19]     $ 343
Investment, Identifier [Axis]: Educators Resource, Inc. – Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value   $ 14,920 [11],[13] $ 21,501 [15],[16]
Investment, Identifier [Axis]: Educators Resource, Inc. – Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread   10.50% [1],[2],[3],[4],[11] 10.50% [5],[6],[7],[9],[16]
Investment interest rate   14.20% [1],[2],[3],[4],[11] 14.80% [5],[6],[7],[9],[16]
Investments owned, fair value   $ 30,000 [11] $ 30,000 [16]
Investment, Identifier [Axis]: Galaxy Technologies Holdings, Inc. – Common Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value   $ 3,158 [11],[13] $ 3,480 [15],[16]
Investment, Identifier [Axis]: Galaxy Technologies Holdings, Inc. – Term Debt 1      
Schedule of Investments [Line Items]      
Investment, reference rate and spread   4.10% [1],[2],[3],[4],[11] 4.10% [5],[6],[7],[9],[16]
Investment interest rate   7.80% [1],[2],[3],[4],[11] 8.40% [5],[6],[7],[9],[16]
Investments owned, fair value   $ 6,900 [11] $ 6,900 [16]
Investment, Identifier [Axis]: Galaxy Technologies Holdings, Inc. – Term Debt 2      
Schedule of Investments [Line Items]      
Investment, reference rate and spread   7.00% [1],[2],[3],[4],[11] 7.00% [5],[6],[7],[9],[16]
Investment interest rate   10.70% [1],[2],[3],[4],[11] 11.30% [5],[6],[7],[9],[16]
Investments owned, fair value   $ 18,796 [11] $ 18,796 [16]
Investment, Identifier [Axis]: Ginsey Home Solutions, Inc. – Common Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value   0 [11],[13] 0 [15],[16]
Investment, Identifier [Axis]: Ginsey Home Solutions, Inc. – Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value   $ 9,116 [11],[13] $ 9,070 [15],[16]
Investment, Identifier [Axis]: Ginsey Home Solutions, Inc. – Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [1],[2],[3],[4],[11]   10.00%  
Investment interest rate [1],[2],[3],[4],[11]   13.70%  
Investments owned, fair value [11]   $ 12,200  
Investment, Identifier [Axis]: Ginsey Home Solutions, Inc. – Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [5],[6],[7],[9],[16]     10.00%
Investment interest rate [5],[6],[7],[9],[16]     14.30%
Investments owned, fair value [16]     $ 12,200
Investment, Identifier [Axis]: Gladstone Alternative Income Fund – Common Equity      
Schedule of Investments [Line Items]      
Investments owned, fair value [15],[17],[24]     $ 4,975
Investment, Identifier [Axis]: Gladstone Alternative Income Fund. – Common Equity      
Schedule of Investments [Line Items]      
Investments owned, fair value [12],[13],[25]   5,075  
Investment, Identifier [Axis]: Global GRAB Technologies, Inc. – Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value [11],[13]   $ 25,339  
Investment, Identifier [Axis]: Global GRAB Technologies, Inc. –Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [1],[2],[3],[4],[11]   9.00%  
Investment interest rate [1],[2],[3],[4],[11]   13.50%  
Investments owned, fair value [11]   $ 46,500  
Investment, Identifier [Axis]: Global GRAB Technologies, Inc.– Line of Credit      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [1],[2],[3],[4],[11]   5.00%  
Investment interest rate [1],[2],[3],[4],[11]   10.00%  
Line of credit facility, available [1],[2],[3],[4],[11]   $ 4,150  
Investments owned, fair value [11]   $ 2,850  
Investment, Identifier [Axis]: Home Concepts Acquisition, Inc. - Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [1],[2],[3],[4],[11]   9.00%  
Investment interest rate [1],[2],[3],[4],[11]   13.00%  
Investments owned, fair value [11]   $ 7,873  
Investment, Identifier [Axis]: Home Concepts Acquisition, Inc. – Line of Credit 1      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [5],[6],[7],[9],[16]     6.00%
Investment interest rate [5],[6],[7],[9],[16]     10.30%
Line of credit facility, available [5],[6],[7],[9],[16]     $ 0
Investments owned, fair value [16]     $ 2,000
Investment, Identifier [Axis]: Home Concepts Acquisition, Inc. – Line of Credit 2      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [5],[6],[7],[9],[16]     6.00%
Investment interest rate [5],[6],[7],[9],[16]     10.30%
Line of credit facility, available [5],[6],[7],[9],[16]     $ 0
Investments owned, fair value [16]     400
Investment, Identifier [Axis]: Home Concepts Acquisition, Inc. – Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value [15],[16]     $ 0
Investment, Identifier [Axis]: Home Concepts Acquisition, Inc. – Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [5],[6],[7],[9],[16]     9.00%
Investment interest rate [5],[6],[7],[9],[16]     13.30%
Investments owned, fair value [16]     $ 9,281
Investment, Identifier [Axis]: Home Concepts Acquisition, Inc.- Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value [11],[13]   0  
Investment, Identifier [Axis]: Horizon Facilities Services, Inc. – Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value   $ 0 [11],[13] $ 0 [15],[16]
Investment, Identifier [Axis]: Horizon Facilities Services, Inc. – Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread   0.50% [1],[2],[3],[4],[11] 0.50% [5],[6],[7],[9],[16]
Investment interest rate   6.00% [1],[2],[3],[4],[11] 6.00% [5],[6],[7],[9],[16]
Investments owned, fair value   $ 26,391 [11] $ 29,634 [16]
Investment, Identifier [Axis]: ImageWorks Display and Marketing Group, Inc. – Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value   $ 27,794 [11],[12],[13] $ 12,921 [15],[16],[17]
Investment, Identifier [Axis]: ImageWorks Display and Marketing Group, Inc. – Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread   11.00% [1],[2],[3],[4],[11],[12] 11.00% [5],[6],[7],[9],[16],[17]
Investment interest rate   14.70% [1],[2],[3],[4],[11],[12] 15.30% [5],[6],[7],[9],[16],[17]
Investments owned, fair value   $ 22,000 [11],[12] $ 22,000 [16],[17]
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC - Line of Credit      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [5],[6],[7],[9],[16],[17],[19]     6.00%
Investment interest rate [5],[6],[7],[9],[16],[17],[19]     10.30%
Line of credit facility, available [5],[6],[7],[9],[16],[17],[19]     $ 0
Investments owned, fair value [16],[17],[19]     $ 3,036
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC - Term Debt 1      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [5],[6],[7],[9],[16],[17],[19]     6.00%
Investment interest rate [5],[6],[7],[9],[16],[17],[19]     10.30%
Investments owned, fair value [16],[17],[19]     $ 10,019
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC - Term Debt 2      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [5],[6],[7],[9],[16],[17],[19]     10.30%
Investment interest rate [5],[6],[7],[9],[16],[17],[19]     14.60%
Investments owned, fair value [16],[17],[19]     $ 15,788
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC - Term Debt 3      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [5],[6],[7],[9],[16],[17],[19]     6.00%
Investment interest rate [5],[6],[7],[9],[16],[17],[19]     10.30%
Investments owned, fair value [16],[17],[19]     $ 1,480
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC – Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [1],[2],[3],[4],[11],[12]   6.00%  
Investment interest rate [1],[2],[3],[4],[11],[12]   10.00%  
Investments owned, fair value [11],[12]   $ 20,000  
Investment, Identifier [Axis]: J.R. Hobbs Co. – Atlanta, LLC – Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value   11,827 [11],[12],[13] 0 [15],[16],[17]
Investment, Identifier [Axis]: Mason West, LLC – Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value   $ 19,045 [11],[13] $ 13,262 [15],[16]
Investment, Identifier [Axis]: Mason West, LLC – Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread   10.00% [1],[2],[3],[4],[11] 10.00% [5],[6],[7],[9],[16]
Investment interest rate   13.70% [1],[2],[3],[4],[11] 14.30% [5],[6],[7],[9],[16]
Investments owned, fair value   $ 25,250 [11] $ 25,250 [16]
Investment, Identifier [Axis]: Nielsen-Kellerman Acquisition Corp. - Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [1],[2],[3],[4],[10],[11],[12]   8.50%  
Investment interest rate [1],[2],[3],[4],[10],[11],[12]   13.50%  
Investments owned, fair value [10],[11],[12]   $ 48,082  
Investment, Identifier [Axis]: Nielsen-Kellerman Acquisition Corp. - Line of Credit      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [5],[6],[7],[9],[14],[16],[17]     5.00%
Investment interest rate [5],[6],[7],[9],[14],[16],[17]     10.00%
Line of credit facility, available [5],[6],[7],[9],[14],[16],[17]     $ 2,820
Investments owned, fair value [14],[16],[17]     $ 1,070
Investment, Identifier [Axis]: Nielsen-Kellerman Acquisition Corp. TL - Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [5],[6],[7],[9],[14],[16],[17]     8.50%
Investment interest rate [5],[6],[7],[9],[14],[16],[17]     13.50%
Investments owned, fair value [14],[16],[17]     $ 48,082
Investment, Identifier [Axis]: Nielsen-Kellerman Acquisition Corp. – Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value   19,505 [10],[11],[12],[13] $ 22,421 [14],[15],[16],[17]
Investment, Identifier [Axis]: Old World Christmas, Inc. – Term Loan      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [5],[6],[7],[9],[16],[17]     9.50%
Investment interest rate [5],[6],[7],[9],[16],[17]     13.80%
Investments owned, fair value [16],[17]     $ 38,000
Investment, Identifier [Axis]: Old World Christmas, Inc. – Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value   $ 33,498 [11],[12],[13] 23,539 [15],[16],[17]
Investment, Identifier [Axis]: Old World Christmas, Inc. – Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [1],[2],[3],[4],[11],[12]   9.50%  
Investment interest rate [1],[2],[3],[4],[11],[12]   13.20%  
Investments owned, fair value [11],[12]   $ 38,000  
Investment, Identifier [Axis]: PSI Molded Plastics, Inc. – Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value   $ 5,171 [11],[12],[13] $ 996 [15],[16],[17]
Investment, Identifier [Axis]: PSI Molded Plastics, Inc. – Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [5],[6],[7],[9],[16],[17]     1.00%
Investment interest rate [5],[6],[7],[9],[16],[17]     7.00%
Investments owned, fair value [16],[17]     $ 10,616
Investment, Identifier [Axis]: Phoenix Door Systems, Inc – Line of Credit      
Schedule of Investments [Line Items]      
Investment, reference rate and spread   1.40% [1],[2],[3],[4],[11] 1.40% [5],[6],[7],[9],[16]
Investment interest rate   5.00% [1],[2],[3],[4],[11] 5.70% [5],[6],[7],[9],[16]
Line of credit facility, available   $ 0 [1],[2],[3],[4],[11] $ 0 [5],[6],[7],[9],[16]
Unused fee percentage 0.30% 0.30% [1],[2],[3],[4],[11]  
Investments owned, fair value   $ 2,950 [11] 2,950 [16]
Investment, Identifier [Axis]: Phoenix Door Systems, Inc. – Common Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value   $ 0 [11],[13] $ 0 [15],[16]
Investment, Identifier [Axis]: Phoenix Door Systems, Inc. – Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread   3.40% [1],[2],[3],[4],[11] 3.40% [5],[6],[7],[9],[16]
Investment interest rate   7.00% [1],[2],[3],[4],[11] 7.70% [5],[6],[7],[9],[16]
Investments owned, fair value   $ 2,990 [11] $ 3,200 [16]
Investment, Identifier [Axis]: Pyrotek Special Effects, Inc. - Line of Credit      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [5],[6],[7],[9],[16],[17],[26]     5.00%
Investment interest rate [5],[6],[7],[9],[16],[17],[26]     10.00%
Line of credit facility, available [5],[6],[7],[9],[16],[17],[26]     $ 500
Investments owned, fair value [16],[17],[26]     $ 2,500
Investment, Identifier [Axis]: Pyrotek Special Effects, Inc. - Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread   8.00% [1],[2],[3],[4],[11],[12],[27] 8.00% [5],[6],[7],[9],[16],[17],[26]
Investment interest rate   13.00% [1],[2],[3],[4],[11],[12],[27] 13.00% [5],[6],[7],[9],[16],[17],[26]
Investments owned, fair value   $ 20,120 [11],[12],[27] $ 20,120 [16],[17],[26]
Investment, Identifier [Axis]: Pyrotek Special Effects, Inc.. – Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value   5,059 [11],[12],[13],[27] 7,260 [15],[16],[17],[26]
Investment, Identifier [Axis]: Ricardo Defense, Inc. - Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value [14],[15],[16]     $ 17,388
Investment, Identifier [Axis]: Ricardo Defense, Inc. – Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [5],[6],[7],[9],[14],[16]     9.00%
Investment interest rate [5],[6],[7],[9],[14],[16]     13.30%
Investments owned, fair value [14],[16]     $ 61,305
Investment, Identifier [Axis]: Rowan Energy Inc. – Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value [11],[13]   $ 7,298  
Investment, Identifier [Axis]: Rowan Energy Inc. – Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [1],[2],[3],[4],[11]   9.00%  
Investment interest rate [1],[2],[3],[4],[11]   14.50%  
Investments owned, fair value [11]   $ 25,790  
Investment, Identifier [Axis]: SFEG Holdings, Inc. – Common Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value   $ 90,068 [11],[13] $ 50,788 [15],[16]
Investment, Identifier [Axis]: SFEG Holdings, Inc. – Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [5],[6],[7],[9],[16]     7.00%
Investment interest rate [5],[6],[7],[9],[16]     12.50%
Investments owned, fair value [16]     $ 54,644
Investment, Identifier [Axis]: SFEG Holdings, Inc. – Term Debt 1      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [1],[2],[3],[4],[11]   7.00%  
Investment interest rate [1],[2],[3],[4],[11]   12.50%  
Investments owned, fair value [11]   $ 54,644  
Investment, Identifier [Axis]: Schylling, Inc. – Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value   $ 56,943 [11],[13] $ 20,599 [15],[16]
Investment, Identifier [Axis]: Schylling, Inc. – Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread   11.00% [1],[2],[3],[4],[11] 11.00% [5],[6],[7],[9],[16]
Investment interest rate   14.70% [1],[2],[3],[4],[11] 15.30% [5],[6],[7],[9],[16]
Investments owned, fair value   $ 21,981 [11] $ 27,981 [16]
Investment, Identifier [Axis]: Smart Chemical Solutions, LLC - Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value [10],[11],[13]   $ 10,834  
Investment, Identifier [Axis]: Smart Chemical Solutions, LLC – Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [1],[2],[3],[4],[10],[11]   9.00%  
Investment interest rate [1],[2],[3],[4],[10],[11]   13.50%  
Investments owned, fair value [10],[11]   $ 35,660  
Investment, Identifier [Axis]: Sun State Nursery and Landscaping, LLC – Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value [11],[13]   $ 1,317  
Investment, Identifier [Axis]: Sun State Nursery and Landscaping, LLC – Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [1],[2],[3],[4],[11]   9.00%  
Investment interest rate [1],[2],[3],[4],[11]   13.50%  
Investments owned, fair value [11]   $ 9,520  
Investment, Identifier [Axis]: The E3 Company, LLC – Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value   $ 57,965 [11],[13] $ 35,839 [15],[16]
Investment, Identifier [Axis]: The E3 Company, LLC – Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread   9.00% [1],[2],[3],[4],[11] 9.00% [5],[6],[7],[9],[16]
Investment interest rate   13.50% [1],[2],[3],[4],[11] 13.50% [5],[6],[7],[9],[16]
Investments owned, fair value   $ 33,750 [11] $ 33,750 [16]
Investment, Identifier [Axis]: The Maids International, LLC – Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value   $ 3,281 [11],[12],[13] $ 8,410 [15],[16],[17]
Investment, Identifier [Axis]: The Maids International, LLC – Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [5],[6],[7],[9],[16],[17]     10.50%
Investment interest rate [5],[6],[7],[9],[16],[17]     14.80%
Investments owned, fair value [16],[17]     $ 28,560
Investment, Identifier [Axis]: The Maids International, LLC – Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [1],[2],[3],[4],[11],[12]   10.50%  
Investment interest rate [1],[2],[3],[4],[11],[12]   14.20%  
Investments owned, fair value [11],[12]   $ 28,560  
Investment, Identifier [Axis]: UPB Acquisition, Inc. – Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value [11],[12],[13]   $ 25,882  
Investment, Identifier [Axis]: UPB Acquisition, Inc. - Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [5],[6],[7],[9],[16],[17]     10.00%
Investment interest rate [5],[6],[7],[9],[16],[17]     14.30%
Investments owned, fair value [16],[17]     $ 15,000
Investment, Identifier [Axis]: UPB Acquisition, Inc. – Preferred Stock      
Schedule of Investments [Line Items]      
Investments owned, fair value [15],[16],[17]     26,010
Investment, Identifier [Axis]: UPB Acquisition, Inc. – Term Debt      
Schedule of Investments [Line Items]      
Investment, reference rate and spread [1],[2],[3],[4],[11],[12]   10.00%  
Investment interest rate [1],[2],[3],[4],[11],[12]   13.70%  
Investments owned, fair value [11],[12]   $ 11,000  
Collateral Pledged      
Schedule of Investments [Line Items]      
Investments owned, fair value   1,100,000 764,700
Aerospace and Defense      
Schedule of Investments [Line Items]      
Investments owned, fair value   177,420 107,869
Buildings and Real Estate      
Schedule of Investments [Line Items]      
Investments owned, fair value   71,450 69,320
Chemicals, Plastics, and Rubber      
Schedule of Investments [Line Items]      
Investments owned, fair value   51,665 11,612
Diversified/Conglomerate Services      
Schedule of Investments [Line Items]      
Investments owned, fair value   194,985 170,360
Healthcare, Education, and Childcare      
Schedule of Investments [Line Items]      
Investments owned, fair value   44,920 51,501
Home and Office Furnishings, Housewares, and Durable Consumer Products      
Schedule of Investments [Line Items]      
Investments owned, fair value   166,499 159,236
Leisure, Amusement, Motion Pictures, and Entertainment      
Schedule of Investments [Line Items]      
Investments owned, fair value   104,103 78,460
Oil and Gas      
Schedule of Investments [Line Items]      
Investments owned, fair value   124,804 69,589
Printing and Publishing      
Schedule of Investments [Line Items]      
Investments owned, fair value   7,873 11,681
Cargo Transport      
Schedule of Investments [Line Items]      
Investments owned, fair value   9,933 12,624
Machinery (Non-Agriculture, Non-Construction, and Non-Electronic)      
Schedule of Investments [Line Items]      
Investments owned, fair value   144,712 105,432
Electronics      
Schedule of Investments [Line Items]      
Investments owned, fair value   67,587 71,573
Mining, Steel, Iron and Non-Precious Metals      
Schedule of Investments [Line Items]      
Investments owned, fair value   36,882 41,010
Telecommunications      
Schedule of Investments [Line Items]      
Investments owned, fair value   8,241 7,585
Secured First Lien Debt      
Schedule of Investments [Line Items]      
Investments owned, fair value   604,516 514,334
Secured Second Lien Debt      
Schedule of Investments [Line Items]      
Investments owned, fair value   90,273 103,580
Preferred Equity      
Schedule of Investments [Line Items]      
Investments owned, fair value   429,702 302,163
Common Equity/ Equivalents      
Schedule of Investments [Line Items]      
Investments owned, fair value   $ 98,301 $ 59,243
Non-Control/Non-Affiliate Investments      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   149.30% [1],[2],[3],[4],[28] 130.00% [5],[6],[7],[9],[29]
Investments owned, fair value   $ 888,994 [28] $ 648,589 [29]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   68.50% [1],[2],[3],[4],[28] 60.30% [5],[6],[7],[9],[29]
Investments owned, fair value   $ 407,810 [28] $ 300,751 [29]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Aerospace and Defense      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   18.60% [1],[2],[3],[4],[28] 12.30% [5],[6],[7],[9],[29]
Investments owned, fair value [28]   $ 110,655  
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Buildings and Real Estate      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   6.40% [1],[2],[3],[4],[28] 7.70% [5],[6],[7],[9],[29]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Chemicals, Plastics, and Rubber      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets [1],[2],[3],[4],[28]   6.00%  
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Diversified/Conglomerate Manufacturing      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   1.00% [1],[2],[3],[4],[28] 1.20% [5],[6],[7],[9],[29]
Investments owned, fair value   $ 5,940 [28] $ 6,150 [29]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Diversified/Conglomerate Services      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   10.30% [1],[2],[3],[4],[28] 11.00% [5],[6],[7],[9],[29]
Investments owned, fair value   $ 61,161 [28] $ 54,884 [29]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Healthcare, Education, and Childcare      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   5.00% [1],[2],[3],[4],[28] 6.00% [5],[6],[7],[9],[29]
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   6.20% [1],[2],[3],[4],[28] 7.40% [5],[6],[7],[9],[29]
Investments owned, fair value   $ 36,750 [28] $ 36,750 [29]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Leisure, Amusement, Motion Pictures, and Entertainment      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   3.70% [1],[2],[3],[4],[28] 5.60% [5],[6],[7],[9],[29]
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Oil and Gas      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   10.00% [1],[2],[3],[4],[28] 6.80% [5],[6],[7],[9],[29]
Investments owned, fair value [28]   $ 59,540  
Non-Control/Non-Affiliate Investments | Secured First Lien Debt | Printing and Publishing      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   1.30% [1],[2],[3],[4],[28] 2.30% [5],[6],[7],[9],[29]
Investments owned, fair value [29]     $ 11,681
Non-Control/Non-Affiliate Investments | Secured Second Lien Debt      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   15.20% [1],[2],[3],[4],[28] 18.60% [5],[6],[7],[9],[29]
Investments owned, fair value   $ 90,273 [28] $ 92,964 [29]
Non-Control/Non-Affiliate Investments | Secured Second Lien Debt | Aerospace and Defense      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   4.30% [1],[2],[3],[4],[28] 5.20% [5],[6],[7],[9],[29]
Investments owned, fair value   $ 25,696 [28] $ 25,696 [29]
Non-Control/Non-Affiliate Investments | Secured Second Lien Debt | Cargo Transport      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   1.70% [1],[2],[3],[4],[28] 2.50% [5],[6],[7],[9],[29]
Non-Control/Non-Affiliate Investments | Secured Second Lien Debt | Machinery (Non-Agriculture, Non-Construction, and Non-Electronic)      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   9.20% [1],[2],[3],[4],[28] 10.90% [5],[6],[7],[9],[29]
Non-Control/Non-Affiliate Investments | Preferred Equity      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   50.00% [1],[2],[3],[4],[28] 40.20% [5],[6],[7],[9],[29]
Investments owned, fair value   $ 297,685 [28] $ 200,606 [29]
Non-Control/Non-Affiliate Investments | Preferred Equity | Aerospace and Defense      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   6.40% [1],[2],[3],[4],[28] 3.50% [5],[6],[7],[9],[29]
Investments owned, fair value [28]   $ 37,911  
Non-Control/Non-Affiliate Investments | Preferred Equity | Buildings and Real Estate      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   5.60% [1],[2],[3],[4],[28] 6.20% [5],[6],[7],[9],[29]
Non-Control/Non-Affiliate Investments | Preferred Equity | Chemicals, Plastics, and Rubber      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets [1],[2],[3],[4],[28]   1.80%  
Non-Control/Non-Affiliate Investments | Preferred Equity | Diversified/Conglomerate Services      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   3.40% [1],[2],[3],[4],[28] 2.70% [5],[6],[7],[9],[29]
Investments owned, fair value   $ 20,362 [28] $ 13,262 [29]
Non-Control/Non-Affiliate Investments | Preferred Equity | Healthcare, Education, and Childcare      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   2.50% [1],[2],[3],[4],[28] 4.30% [5],[6],[7],[9],[29]
Non-Control/Non-Affiliate Investments | Preferred Equity | Home and Office Furnishings, Housewares, and Durable Consumer Products      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   9.80% [1],[2],[3],[4],[28] 12.20% [5],[6],[7],[9],[29]
Investments owned, fair value   $ 58,251 [28] $ 60,947 [29]
Non-Control/Non-Affiliate Investments | Preferred Equity | Leisure, Amusement, Motion Pictures, and Entertainment      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   9.60% [1],[2],[3],[4],[28] 4.10% [5],[6],[7],[9],[29]
Non-Control/Non-Affiliate Investments | Preferred Equity | Oil and Gas      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   10.90% [1],[2],[3],[4],[28] 7.20% [5],[6],[7],[9],[29]
Investments owned, fair value [28]   $ 65,263  
Non-Control/Non-Affiliate Investments | Preferred Equity | Printing and Publishing      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   0.00% [1],[2],[3],[4],[28] 0.00% [5],[6],[7],[9],[29]
Non-Control/Non-Affiliate Investments | Common Equity/ Equivalents      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   15.60% [1],[2],[3],[4],[28] 10.90% [5],[6],[7],[9],[29]
Investments owned, fair value   $ 93,226 [28] $ 54,268 [29]
Non-Control/Non-Affiliate Investments | Common Equity/ Equivalents | Aerospace and Defense      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   0.50% [1],[2],[3],[4],[28] 0.70% [5],[6],[7],[9],[29]
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],[4],[28] 0.00% [5],[6],[7],[9],[29]
Non-Control/Non-Affiliate Investments | Common Equity/ Equivalents | Home and Office Furnishings, Housewares, and Durable Consumer Products      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   0.00% [1],[2],[3],[4],[28] 0.00% [5],[6],[7],[9],[29]
Non-Control/Non-Affiliate Investments | Common Equity/ Equivalents | Cargo Transport      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   0.00% [1],[2],[3],[4],[28] 0.00% [5],[6],[7],[9],[29]
Non-Control/Non-Affiliate Investments | Common Equity/ Equivalents | Machinery (Non-Agriculture, Non-Construction, and Non-Electronic)      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   15.10% [1],[2],[3],[4],[28] 10.20% [5],[6],[7],[9],[29]
Affiliate Investments      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   56.00% [1],[2],[3],[4],[12] 66.10% [5],[6],[7],[9],[17]
Investments owned, fair value   $ 333,095 [12] $ 330,388 [17]
Affiliate Investments | Secured First Lien Debt      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   32.90% [1],[2],[3],[4],[12] 42.70% [5],[6],[7],[9],[17]
Investments owned, fair value   $ 196,003 [12] $ 213,240 [17]
Affiliate Investments | Secured First Lien Debt | Diversified/Conglomerate Services      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   11.80% [1],[2],[3],[4],[12] 16.20% [5],[6],[7],[9],[17]
Investments owned, fair value   $ 70,560 [12] $ 80,883 [17]
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   6.40% [1],[2],[3],[4],[12] 7.60% [5],[6],[7],[9],[17]
Affiliate Investments | Secured First Lien Debt | Leisure, Amusement, Motion Pictures, and Entertainment      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   3.40% [1],[2],[3],[4],[12] 4.50% [5],[6],[7],[9],[17]
Investments owned, fair value [17]     $ 22,620
Affiliate Investments | Secured First Lien Debt | Electronics      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   8.10% [1],[2],[3],[4],[12] 9.90% [5],[6],[7],[9],[17]
Investments owned, fair value [17]     $ 49,152
Affiliate Investments | Secured First Lien Debt | Mining, Steel, Iron and Non-Precious Metals      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   1.80% [1],[2],[3],[4],[12] 3.00% [5],[6],[7],[9],[17]
Affiliate Investments | Secured First Lien Debt | Telecommunications      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   1.40% [1],[2],[3],[4],[12] 1.50% [5],[6],[7],[9],[17]
Investments owned, fair value   $ 8,241 [12] $ 7,585 [17]
Affiliate Investments | Secured Second Lien Debt      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets [5],[6],[7],[9],[17]     2.10%
Investments owned, fair value [17]     $ 10,616
Affiliate Investments | Secured Second Lien Debt | Chemicals, Plastics, and Rubber      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets [5],[6],[7],[9],[17]     2.10%
Affiliate Investments | Preferred Equity      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   22.20% [1],[2],[3],[4],[12] 20.30% [5],[6],[7],[9],[17]
Investments owned, fair value   $ 132,017 [12] $ 101,557 [17]
Affiliate Investments | Preferred Equity | Chemicals, Plastics, and Rubber      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   0.90% [1],[2],[3],[4],[12] 0.20% [5],[6],[7],[9],[17]
Affiliate Investments | Preferred Equity | Diversified/Conglomerate Services      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   7.30% [1],[2],[3],[4],[12] 4.30% [5],[6],[7],[9],[17]
Investments owned, fair value   $ 42,902 [12] $ 21,331 [17]
Affiliate Investments | Preferred Equity | Home and Office Furnishings, Housewares, and Durable Consumer Products      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   5.60% [1],[2],[3],[4],[12] 4.70% [5],[6],[7],[9],[17]
Affiliate Investments | Preferred Equity | Leisure, Amusement, Motion Pictures, and Entertainment      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   0.80% [1],[2],[3],[4],[12] 1.40% [5],[6],[7],[9],[17]
Affiliate Investments | Preferred Equity | Electronics      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   3.30% [1],[2],[3],[4],[12] 4.50% [5],[6],[7],[9],[17]
Affiliate Investments | Preferred Equity | Mining, Steel, Iron and Non-Precious Metals      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   4.30% [1],[2],[3],[4],[12] 5.20% [5],[6],[7],[9],[17]
Affiliate Investments | Preferred Equity | Telecommunications      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   0.00% [1],[2],[3],[4],[12] 0.00% [5],[6],[7],[9],[17]
Affiliate Investments | Common Equity/ Equivalents      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   0.90% [1],[2],[3],[4],[12] 1.00% [5],[6],[7],[9],[17]
Investments owned, fair value   $ 5,075 [12] $ 4,975 [17]
Affiliate Investments | Common Equity/ Equivalents | Telecommunications      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   0.00% [1],[2],[3],[4],[12] 0.00% [5],[6],[7],[9],[17]
Affiliate Investments | Common Equity/ Equivalents | Finance      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   0.90% [1],[2],[3],[4],[12] 1.00% [5],[6],[7],[9],[17]
Control Investments      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   0.10% [1],[2],[3],[4],[30] 0.10% [5],[6],[7],[9],[31]
Investments owned, fair value   $ 703 [30] $ 343 [31]
Control Investments | Secured First Lien Debt      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   0.10% [1],[2],[3],[4],[30] 0.10% [5],[6],[7],[9],[31]
Investments owned, fair value   $ 703 [30] $ 343 [31]
Control Investments | Secured First Lien Debt | Diversified/Conglomerate Manufacturing      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   0.10% [1],[2],[3],[4],[30] 0.10% [5],[6],[7],[9],[31]
Control Investments | Preferred Equity      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets [5],[6],[7],[9],[31]     0.00%
Investments owned, fair value   $ 0 [30] $ 0 [31]
Control Investments | Preferred Equity | Diversified/Conglomerate Manufacturing      
Schedule of Investments [Line Items]      
Investment owned, percent of net assets   0.00% [1],[2],[3],[4],[30] 0.00% [5],[6],[7],[9],[31]
[1] Category percentages represent the fair value of each category and subcategory as a percentage of net assets as of December 31, 2025.
[2] Certain of the securities listed are issued by affiliate(s) of the indicated portfolio company. The majority of the securities listed, totaling $1.1 billion at fair value, are pledged as collateral to our revolving line of credit, as described further in Note 5—Borrowings in the accompanying Notes to Consolidated Financial Statements. Additionally, under Section 55 of 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 December 31, 2025, our investments in Pyrotek Special Effects, Inc. ("Pyrotek") and Gladstone Alternative Income Fund ("Gladstone Alternative") are considered non-qualifying assets under Section 55 of the 1940 Act. Such non-qualifying assets represent 2.5% of total investments, at fair value, as of December 31, 2025.
[3] Unless indicated otherwise, all cash interest rates are indexed to 30-day Secured Overnight Financing Rate ("SOFR"), which was 3.7% as of December 31, 2025. If applicable, paid-in-kind 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 the reference rate plus a spread. Due dates represent the contractual maturity date.
[4] Unless indicated otherwise, all of our investments are valued using Level 3 inputs within the Financial Accounting Standards Board ("FASB") Accounting Standards 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.
[5] Unless indicated otherwise, all cash interest rates are indexed to 30-day SOFR, which was 4.3% as of March 31, 2025. If applicable, paid-in-kind 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 reference rate plus a spread. Due dates represent the contractual maturity date.
[6] Category percentages represent the fair value of each category and subcategory as a percentage of net assets as of March 31, 2025.
[7] Certain of the securities listed are issued by affiliate(s) of the indicated portfolio company. The majority of the securities listed, totaling $764.7 million at fair value, are pledged as collateral to our revolving line of credit, as described further in Note 5—Borrowings in the accompanying Notes to Consolidated Financial Statements. Additionally, under Section 55 of 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 March 31, 2025, our investments in Pyrotek and Gladstone Alternative are considered non-qualifying assets under Section 55 of the 1940 Act. Such non-qualifying assets represent 3.6% of total investments, at fair value, as of March 31, 2025.
[8] Cumulative gross unrealized appreciation for federal income tax purposes is $183.3 million; cumulative gross unrealized depreciation for federal income tax purposes is $144.9 million. Cumulative net unrealized appreciation is $38.5 million, based on a tax cost of $940.9 million.
[9] Unless indicated otherwise, all of our investments are valued using Level 3 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.
[10]
(K)One or more of our affiliated funds, Gladstone Capital Corporation and Gladstone Alternative, co-invested with us in this portfolio company pursuant to an exemptive order granted by the U.S. Securities and Exchange Commission.
[11] Fair value was based on the total enterprise value of the portfolio company, which is generally allocated to the portfolio company’s securities in order of their relative priority in the capital structure. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.
[12] Affiliate investments, as defined by the 1940 Act, are those that are not Control investments and in which we own, with the power to vote, between and inclusive of 5.0% and 25.0% of the issued and outstanding voting securities.
[13] Security is non-income producing
[14] One or more of our affiliated funds, Gladstone Capital Corporation and Gladstone Alternative Income Fund, co-invested with us in this portfolio company pursuant to an exemptive order granted by the U.S. Securities and Exchange Commission.
[15] Security is non-income producing.
[16] Fair value was based on the total enterprise value of the portfolio company, which is generally allocated to the portfolio company’s securities in order of their relative priority in the capital structure. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.
[17] Affiliate investments, as defined by the 1940 Act, are those that are not Control investments and 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.
[18] Debt security is on non-accrual status.
[19] Debt security is on non-accrual status.
[20] The portfolio company changed its name from Ricardo Defense, Inc. to Detroit Defense, Inc during the nine months ended December 31, 2025.
[21] Fair value was based on internal yield analysis or on estimates of value submitted by a third-party valuation firm. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.
[22] 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.
[23] 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.
[24] Fair value was based on net asset value provided by the underlying fund as a practical expedient.
[25] Fair value was based on net asset value provided by the underlying fund as a practical expedient.
[26] This portfolio company is headquartered in Ontario, Canada.
[27] This portfolio company is headquartered in Ontario, Canada.
[28] 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.
[29] 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.
[30] 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.
[31] 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.