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

INVESTMENTS IN AND ADVANCES TO AFFILIATES (Details)

v3.26.1
INVESTMENTS IN AND ADVANCES TO AFFILIATES (Details) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment owned, percent of net assets 195.90% [1],[2],[3],[4],[5] 196.20% [6],[7],[8],[9],[10]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [8] $ 979,320  
Ending balance [3] $ 1,309,248  
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%
Collateral Pledged    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance $ 764,700  
Ending balance 1,200,000  
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. - Common Stock Warrants    
Investments in and Advances to Affiliates, Activity [Line Items]    
Net Realized Gain (Loss) For Period 0  
Amount of Investment Income $ 0  
Principal Units 3.50%  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance $ 0  
Gross Additions 0  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) 0  
Ending balance $ 0  
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Common Stock Warrants    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Units 3.50% [11],[12],[13],[14],[15],[16] 3.50% [17],[18],[19],[20],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [17],[19],[21],[22] $ 0  
Ending balance [11],[13],[15],[16] $ 0  
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Line of Credit 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate 7.00% [1],[2],[4],[5],[11],[15],[16],[23] 7.00% [6],[7],[9],[10],[17],[21],[22],[24]
Investment, reference rate and spread 2.00% [1],[2],[4],[5],[11],[15],[16],[23] 2.00% [6],[7],[9],[10],[17],[21],[22],[24]
Line of credit facility, available $ 0 [1],[2],[4],[5],[11],[15],[16],[23] $ 0 [6],[7],[9],[10],[17],[21],[22],[24]
Principal amount 3,080 [11],[12],[14],[15],[16],[23] $ 3,080 [17],[18],[20],[21],[22],[24]
Net Realized Gain (Loss) For Period 0  
Amount of Investment Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [17],[21],[22],[24] 3,080  
Gross Additions 0  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) 0  
Ending balance [11],[15],[16],[23] $ 3,080  
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Line of Credit 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate 7.00% [1],[2],[4],[5],[11],[15],[16],[23] 7.00% [6],[7],[9],[10],[17],[21],[22],[24]
Investment, reference rate and spread 2.00% [1],[2],[4],[5],[11],[15],[16],[23] 2.00% [6],[7],[9],[10],[17],[21],[22],[24]
Line of credit facility, available $ 0 [1],[2],[4],[5],[11],[15],[16],[23] $ 120 [6],[7],[9],[10],[17],[21],[22],[24]
Principal amount 1,050 [11],[12],[14],[15],[16],[23] $ 930 [17],[18],[20],[21],[22],[24]
Net Realized Gain (Loss) For Period 0  
Amount of Investment Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [17],[21],[22],[24] 930  
Gross Additions 120  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) 0  
Ending balance [11],[15],[16],[23] 1,050  
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Net Realized Gain (Loss) For Period 0  
Amount of Investment Income $ 0  
Principal Shares 14,304 14,304 [17],[18],[19],[20],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [17],[19],[21],[22] $ 0  
Gross Additions 0  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) 0  
Ending balance $ 0  
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [1],[2],[4],[5],[11],[15],[16],[23] 7.00%  
Investment, reference rate and spread [1],[2],[4],[5],[11],[15],[16],[23] 2.00%  
Principal amount [11],[12],[14],[15],[16],[23] $ 14,000  
Net Realized Gain (Loss) For Period 0  
Amount of Investment Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 3,575  
Gross Additions 0  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) 237  
Ending balance [11],[15],[16],[23] 3,812  
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Term Debt 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [6],[7],[9],[10],[17],[21],[22],[24]   7.00%
Investment, reference rate and spread [6],[7],[9],[10],[17],[21],[22],[24]   2.00%
Principal amount [17],[18],[20],[21],[22],[24]   $ 14,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [17],[21],[22],[24] $ 3,575  
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.– Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Shares [11],[12],[13],[14],[15],[16] 14,304  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [11],[13],[15],[16] $ 0  
Investment, Identifier [Axis]: Brunswick Bowling Products, Inc. – Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Shares 6,653 [12],[13],[14],[15] 6,653 [18],[19],[20],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [19],[21] $ 51,877  
Ending balance [13],[15] $ 49,815  
Investment, Identifier [Axis]: Brunswick Bowling Products, Inc. – Term Debt 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate 13.70% [1],[2],[4],[5],[15] 14.30% [6],[7],[9],[10],[21]
Investment, reference rate and spread 10.00% [1],[2],[4],[5],[15] 10.00% [6],[7],[9],[10],[21]
Principal amount $ 17,700 [12],[14],[15] $ 17,700 [18],[20],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [21] 17,700  
Ending balance [15] $ 17,700  
Investment, Identifier [Axis]: Brunswick Bowling Products, Inc. – Term Debt 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate 13.70% [1],[2],[4],[5],[15] 14.30% [6],[7],[9],[10],[21]
Investment, reference rate and spread 10.00% [1],[2],[4],[5],[15] 10.00% [6],[7],[9],[10],[21]
Principal amount $ 6,850 [12],[14],[15] $ 6,850 [18],[20],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [21] 6,850  
Ending balance [15] 6,850  
Investment, Identifier [Axis]: Dema/Mai Holdings, Inc. - Preferred Equity    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Shares [18],[19],[20],[21]   21,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [19],[21] $ 31,070  
Investment, Identifier [Axis]: Dema/Mai Holdings, Inc. – Preferred Equity    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Shares [12],[13],[14],[15] 21,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [13],[15] $ 30,737  
Investment, Identifier [Axis]: Dema/Mai Holdings, Inc. – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate 14.70% [1],[2],[4],[5],[15] 15.30% [6],[7],[9],[10],[21]
Investment, reference rate and spread 11.00% [1],[2],[4],[5],[15] 11.00% [6],[7],[9],[10],[21]
Principal amount $ 38,250 [12],[14],[15] $ 38,250 [18],[20],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [21] 38,250  
Ending balance [15] $ 38,250  
Investment, Identifier [Axis]: Detroit Defense, Inc. - Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Shares [11],[12],[13],[14],[15],[25] 17,388  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [11],[13],[15],[25] $ 12,572  
Investment, Identifier [Axis]: Detroit Defense, Inc. – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [1],[2],[4],[5],[11],[15],[25] 13.00%  
Investment, reference rate and spread [1],[2],[4],[5],[11],[15],[25] 9.00%  
Principal amount [11],[12],[14],[15],[25] $ 61,305  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [11],[15],[25] $ 61,305  
Investment, Identifier [Axis]: Diligent Delivery Systems – Common Stock Warrants    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Units 8.00% [12],[13],[14],[15] 8.00% [18],[19],[20],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [19],[21] $ 0  
Ending balance [13],[15] $ 0  
Investment, Identifier [Axis]: Diligent Delivery Systems – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate 12.70% [1],[2],[4],[5],[15],[23] 13.30% [6],[7],[9],[10],[24],[26]
Investment, reference rate and spread 9.00% [1],[2],[4],[5],[15],[23] 9.00% [6],[7],[9],[10],[24],[26]
Principal amount $ 13,000 [12],[14],[15],[23] $ 13,000 [18],[20],[24],[26]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [24],[26] 12,624  
Ending balance [15],[23] $ 512  
Investment, Identifier [Axis]: Dreyfus Treasury Obligations Cash Management Fund    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate 3.30% [1],[2],[4],[5],[27] 3.97% [6],[7],[9],[10],[28]
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. – Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Net Realized Gain (Loss) For Period $ 0  
Amount of Investment Income $ 0  
Principal Shares 8,199 [11],[12],[13],[14],[15] 8,199 [17],[18],[19],[20],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [17],[19],[21] $ 0  
Gross Additions 0  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) 0  
Ending balance [11],[13],[15] 0  
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [6],[7],[9],[10],[17],[21],[24]   9.80%
Investment, reference rate and spread [6],[7],[9],[10],[17],[21],[24]   5.50%
Principal amount [17],[18],[20],[21],[24]   $ 9,210
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [17],[21],[24] $ 343  
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [1],[2],[4],[5],[11],[15],[23] 9.20%  
Investment, reference rate and spread [1],[2],[4],[5],[11],[15],[23] 5.50%  
Principal amount [11],[12],[14],[15],[23] $ 9,210  
Net Realized Gain (Loss) For Period 0  
Amount of Investment Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 343  
Gross Additions 0  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) 270  
Ending balance [11],[15],[23] $ 613  
Investment, Identifier [Axis]: Educators Resource, Inc. – Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Shares 8,560 [12],[13],[14],[15] 8,560 [18],[19],[20],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [19],[21] $ 21,501  
Ending balance [13],[15] $ 11,630  
Investment, Identifier [Axis]: Educators Resource, Inc. – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate 14.20% [1],[2],[4],[5],[15] 14.80% [6],[7],[9],[10],[21]
Investment, reference rate and spread 10.50% [1],[2],[4],[5],[15] 10.50% [6],[7],[9],[10],[21]
Principal amount $ 30,000 [12],[14],[15] $ 30,000 [18],[20],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [21] 30,000  
Ending balance [15] $ 30,000  
Investment, Identifier [Axis]: Galaxy Technologies Holdings, Inc. – Common Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Shares 16,957 [12],[13],[14],[15] 16,957 [18],[19],[20],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [19],[21] $ 3,480  
Ending balance [13],[15] $ 3,447  
Investment, Identifier [Axis]: Galaxy Technologies Holdings, Inc. – Term Debt 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate 7.80% [1],[2],[4],[5],[15] 8.40% [6],[7],[9],[10],[21]
Investment, reference rate and spread 4.10% [1],[2],[4],[5],[15] 4.10% [6],[7],[9],[10],[21]
Principal amount $ 6,900 [12],[14],[15] $ 6,900 [18],[20],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [21] 6,900  
Ending balance [15] $ 6,900  
Investment, Identifier [Axis]: Galaxy Technologies Holdings, Inc. – Term Debt 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate 10.70% [1],[2],[4],[5],[15] 11.30% [6],[7],[9],[10],[21]
Investment, reference rate and spread 7.00% [1],[2],[4],[5],[15] 7.00% [6],[7],[9],[10],[21]
Principal amount $ 18,796 [12],[14],[15] $ 18,796 [18],[20],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [21] 18,796  
Ending balance [15] $ 18,796  
Investment, Identifier [Axis]: Ginsey Home Solutions, Inc. – Common Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Shares 63,747 [12],[13],[14],[15] 63,747 [18],[19],[20],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [19],[21] $ 0  
Ending balance [13],[15] $ 0  
Investment, Identifier [Axis]: Ginsey Home Solutions, Inc. – Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Shares 19,280 [12],[13],[14],[15] 19,280 [18],[19],[20],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [19],[21] $ 9,070  
Ending balance [13],[15] $ 12,258  
Investment, Identifier [Axis]: Ginsey Home Solutions, Inc. – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate 13.70% [1],[2],[4],[5],[15] 14.30% [6],[7],[9],[10],[21]
Investment, reference rate and spread 10.00% [1],[2],[4],[5],[15] 10.00% [6],[7],[9],[10],[21]
Principal amount $ 12,200 [12],[14],[15] $ 12,200 [18],[20],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [21] 12,200  
Ending balance [15] 12,200  
Investment, Identifier [Axis]: Gladstone Alternative Income Fund – Common Equity    
Investments in and Advances to Affiliates, Activity [Line Items]    
Net Realized Gain (Loss) For Period 0  
Amount of Investment Income $ 344  
Principal Shares [12],[13],[14],[16],[29] 500,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance $ 4,975  
Gross Additions 0  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) 30  
Ending balance [13],[16],[29] 5,005  
Investment, Identifier [Axis]: Gladstone Alternative Income Fund. – Common Equity    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Shares [18],[19],[20],[22],[30]   500,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [19],[22],[30] $ 4,975  
Investment, Identifier [Axis]: Global GRAB Technologies, Inc. – Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Shares [12],[13],[14],[15] 21,100  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [13],[15] $ 25,022  
Investment, Identifier [Axis]: Global GRAB Technologies, Inc. – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [1],[2],[4],[5],[11],[15],[25] 13.50%  
Investment, reference rate and spread [1],[2],[4],[5],[11],[15],[25] 9.00%  
Principal amount [12],[14] $ 46,500  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance 46,500  
Investment, Identifier [Axis]: Home Concepts Acquisition, Inc. – Line of Credit 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [6],[7],[9],[10],[21]   10.30%
Investment, reference rate and spread [6],[7],[9],[10],[21]   6.00%
Line of credit facility, available [6],[7],[9],[10],[21]   $ 0
Principal amount [18],[20],[21]   $ 2,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [21] 2,000  
Investment, Identifier [Axis]: Home Concepts Acquisition, Inc. – Line of Credit 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [6],[7],[9],[10],[21]   10.30%
Investment, reference rate and spread [6],[7],[9],[10],[21]   6.00%
Line of credit facility, available [6],[7],[9],[10],[21]   $ 0
Principal amount [18],[20],[21]   $ 400
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [21] $ 400  
Investment, Identifier [Axis]: Home Concepts Acquisition, Inc. – Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Shares 3,275,000 [12],[13],[14],[15] 3,275,000 [18],[19],[20],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [19],[21] $ 0  
Ending balance [13],[15] $ 0  
Investment, Identifier [Axis]: Home Concepts Acquisition, Inc. – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate 13.00% [1],[2],[4],[5],[15] 13.30% [6],[7],[9],[10],[21]
Investment, reference rate and spread 9.00% [1],[2],[4],[5],[15] 9.00% [6],[7],[9],[10],[21]
Principal amount $ 12,000 [12],[14],[15] $ 12,000 [18],[20],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [21] 9,281  
Ending balance [15] $ 8,379  
Investment, Identifier [Axis]: Horizon Facilities Services, Inc. – Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Shares 10,080 [12],[13],[14],[15] 10,080 [18],[19],[20],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [19],[21] $ 0  
Ending balance [13],[15] $ 0  
Investment, Identifier [Axis]: Horizon Facilities Services, Inc. – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate 6.00% [1],[2],[4],[5],[15] 6.00% [6],[7],[9],[10],[21]
Investment, reference rate and spread 0.50% [1],[2],[4],[5],[15] 0.50% [6],[7],[9],[10],[21]
Principal amount $ 57,700 [12],[14],[15] $ 57,700 [18],[20],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [21] 29,634  
Ending balance [15] 16,545  
Investment, Identifier [Axis]: ImageWorks Display and Marketing Group, Inc. – Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Net Realized Gain (Loss) For Period 0  
Amount of Investment Income $ 1,386  
Principal Shares 67,490 [12],[13],[14],[15],[16] 67,490 [18],[19],[20],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [19],[21],[22] $ 12,921  
Gross Additions 0  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) 17,532  
Ending balance [13],[15],[16] 30,453  
Investment, Identifier [Axis]: ImageWorks Display and Marketing Group, Inc. – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal amount [12],[14],[15],[16] 22,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [15],[16] $ 22,000  
Investment, Identifier [Axis]: ImageWorks Display and Marketing Group, Inc. – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate 14.70% [1],[2],[4],[5],[15],[16] 15.30% [6],[7],[9],[10],[21],[22]
Investment, reference rate and spread 11.00% [1],[2],[4],[5],[15],[16] 11.00% [6],[7],[9],[10],[21],[22]
Principal amount $ 22,000 $ 22,000 [18],[20],[21],[22]
Net Realized Gain (Loss) For Period 0  
Amount of Investment Income 3,671  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [21],[22] 22,000  
Gross Additions 0  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) 0  
Ending balance 22,000  
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC - Line of Credit    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal amount 0  
Net Realized Gain (Loss) For Period (2,998)  
Amount of Investment Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 3,036  
Gross Additions 0  
Gross Reductions (5,000)  
Net Unrealized Appreciation (Depreciation) 1,964  
Ending balance 0  
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC - Term Debt 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [6],[7],[9],[10],[21],[22],[24]   10.30%
Investment, reference rate and spread [6],[7],[9],[10],[21],[22],[24]   6.00%
Principal amount 0 $ 16,500 [18],[20],[21],[22],[24]
Net Realized Gain (Loss) For Period (9,892)  
Amount of Investment Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [21],[22],[24] 10,019  
Gross Additions 0  
Gross Reductions (16,500)  
Net Unrealized Appreciation (Depreciation) 6,481  
Ending balance 0  
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC - Term Debt 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [6],[7],[9],[10],[21],[22],[24]   14.60%
Investment, reference rate and spread [6],[7],[9],[10],[21],[22],[24]   10.30%
Principal amount [18],[20],[21],[22],[24]   $ 26,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [21],[22],[24] 15,788  
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC - Term Debt 3    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [6],[7],[9],[10],[21],[22],[24]   10.30%
Investment, reference rate and spread [6],[7],[9],[10],[21],[22],[24]   6.00%
Principal amount [18],[20],[21],[22],[24]   $ 2,438
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [21],[22],[24] 1,480  
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC – Line of Credit    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [6],[7],[9],[10],[21],[22],[24]   10.30%
Investment, reference rate and spread [6],[7],[9],[10],[21],[22],[24]   6.00%
Line of credit facility, available [6],[7],[9],[10],[21],[22],[24]   $ 0
Principal amount [18],[20],[21],[22],[24]   $ 5,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [21],[22],[24] $ 3,036  
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [1],[2],[4],[5],[15],[16] 10.00%  
Investment, reference rate and spread [1],[2],[4],[5],[15],[16] 6.00%  
Principal amount [12],[14],[15],[16] $ 20,000  
Net Realized Gain (Loss) For Period (15,587)  
Amount of Investment Income 1,353  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 15,788  
Gross Additions 0  
Gross Reductions (6,000)  
Net Unrealized Appreciation (Depreciation) 10,212  
Ending balance [15],[16] 20,000  
Investment, Identifier [Axis]: J.R. Hobbs Co. - Atlanta, LLC – Term Debt 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal amount 0  
Net Realized Gain (Loss) For Period (1,461)  
Amount of Investment Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 1,480  
Gross Additions 0  
Gross Reductions (2,438)  
Net Unrealized Appreciation (Depreciation) 958  
Ending balance 0  
Investment, Identifier [Axis]: J.R. Hobbs Co. – Atlanta, LLC – Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Net Realized Gain (Loss) For Period 0  
Amount of Investment Income $ 0  
Principal Shares 10,920 [12],[13],[14],[15],[16] 10,920 [18],[19],[20],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [19],[21],[22] $ 0  
Gross Additions 0  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) 9,236  
Ending balance [13],[15],[16] $ 9,236  
Investment, Identifier [Axis]: Mason West, LLC – Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Shares 11,206 [12],[13],[14],[15] 11,206 [18],[19],[20],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [19],[21] $ 13,262  
Ending balance [13],[15] $ 19,235  
Investment, Identifier [Axis]: Mason West, LLC – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate 13.70% [1],[2],[4],[5],[15] 14.30% [6],[7],[9],[10],[21]
Investment, reference rate and spread 10.00% [1],[2],[4],[5],[15] 10.00% [6],[7],[9],[10],[21]
Principal amount $ 25,250 [12],[14],[15] $ 25,250 [18],[20],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [21] 25,250  
Ending balance [15] 25,250  
Investment, Identifier [Axis]: Nielsen-Kellerman Acquisition Corp. - Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal amount [11],[12],[14],[15],[16] 48,082  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [11],[15],[16] 48,082  
Investment, Identifier [Axis]: Nielsen-Kellerman Acquisition Corp. Line of Credit    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [6],[7],[9],[10],[17],[21],[22]   10.00%
Investment, reference rate and spread [6],[7],[9],[10],[17],[21],[22]   5.00%
Line of credit facility, available [6],[7],[9],[10],[17],[21],[22]   $ 2,820
Principal amount [17],[18],[20],[21],[22]   $ 1,070
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [17],[21],[22] 1,070  
Investment, Identifier [Axis]: Nielsen-Kellerman Acquisition Corp. TL - Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [6],[7],[9],[10],[17],[21],[22]   13.50%
Investment, reference rate and spread [6],[7],[9],[10],[17],[21],[22]   8.50%
Principal amount [17],[18],[20],[21],[22]   $ 48,082
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [17],[21],[22] $ 48,082  
Investment, Identifier [Axis]: Nielsen-Kellerman Acquisition Corp. – Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Shares 22,169 [11],[12],[13],[14],[15],[16] 22,169 [17],[18],[19],[20],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [17],[19],[21],[22] $ 22,421  
Ending balance [11],[13],[15],[16] $ 14,641  
Investment, Identifier [Axis]: Nielsen-Kellerman Acquisition Corp. – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [1],[2],[4],[5],[11],[15],[16] 13.50%  
Investment, reference rate and spread [1],[2],[4],[5],[11],[15],[16] 8.50%  
Principal amount $ 48,082  
Net Realized Gain (Loss) For Period 0  
Amount of Investment Income 6,581  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 48,082  
Gross Additions 0  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) 0  
Ending balance 48,082  
Investment, Identifier [Axis]: Nielsen-Kellerman Acquisition Corp.– Line of Credit    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal amount 0  
Net Realized Gain (Loss) For Period 0  
Amount of Investment Income 23  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 1,070  
Gross Additions 0  
Gross Reductions (1,070)  
Net Unrealized Appreciation (Depreciation) 0  
Ending balance 0  
Investment, Identifier [Axis]: Nielsen-Kellerman Acquisition Corp.– Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Net Realized Gain (Loss) For Period 0  
Amount of Investment Income $ 0  
Principal Shares 22,169  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance $ 22,421  
Gross Additions 0  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) (7,780)  
Ending balance 14,641  
Investment, Identifier [Axis]: Old World Christmas, Inc. – Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Net Realized Gain (Loss) For Period 3,481  
Amount of Investment Income $ 917  
Principal Shares 6,180 [12],[13],[14],[15],[16] 6,180 [18],[19],[20],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [19],[21],[22] $ 23,539  
Gross Additions 0  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) 6,191  
Ending balance [13],[15],[16] $ 29,730  
Investment, Identifier [Axis]: Old World Christmas, Inc. – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate 13.20% [1],[2],[4],[5],[15],[16] 13.80% [6],[7],[9],[10],[21],[22]
Investment, reference rate and spread 9.50% [1],[2],[4],[5],[15],[16] 9.50% [6],[7],[9],[10],[21],[22]
Principal amount $ 38,000 [12],[14],[15],[16] $ 38,000 [18],[20],[21],[22]
Net Realized Gain (Loss) For Period 0  
Amount of Investment Income 5,618  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [21],[22] 38,000  
Gross Additions 0  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) 0  
Ending balance [15],[16] 38,000  
Investment, Identifier [Axis]: PSI Molded Plastics, Inc. – Line of Credit    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal amount [12],[14],[15],[16] 1,400  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [15],[16] 1,400  
Investment, Identifier [Axis]: PSI Molded Plastics, Inc. – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal amount [12],[14],[15],[16] 400  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [15],[16] $ 400  
Investment, Identifier [Axis]: PSI Molded Plastics, Inc. – Line of Credit    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [1],[2],[4],[5],[15],[16] 7.00%  
Investment, reference rate and spread [1],[2],[4],[5],[15],[16] 1.00%  
Line of credit facility, available [1],[2],[4],[5],[15],[16] $ 600  
Principal amount 1,400  
Net Realized Gain (Loss) For Period 0  
Amount of Investment Income 10  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 0  
Gross Additions 1,400  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) 0  
Ending balance $ 1,400  
Investment, Identifier [Axis]: PSI Molded Plastics, Inc. – Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Shares 428,773 [12],[13],[14],[15],[16] 322,598 [18],[19],[20],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [19],[21],[22] $ 996  
Ending balance [13],[15],[16] 4,928  
Investment, Identifier [Axis]: PSI Molded Plastics, Inc. – Preferred Stock(O)    
Investments in and Advances to Affiliates, Activity [Line Items]    
Net Realized Gain (Loss) For Period 0  
Amount of Investment Income $ 0  
Principal Shares 428,773  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance $ 996  
Gross Additions 10,616  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) (6,684)  
Ending balance 4,928  
Investment, Identifier [Axis]: PSI Molded Plastics, Inc. – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [6],[7],[9],[10],[21],[22]   7.00%
Investment, reference rate and spread [6],[7],[9],[10],[21],[22]   1.00%
Principal amount [18],[20],[21],[22]   $ 10,616
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [21],[22] 10,616  
Investment, Identifier [Axis]: PSI Molded Plastics, Inc. – Term Debt 1    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [1],[2],[4],[5],[15],[16]   7.00%
Investment, reference rate and spread [1],[2],[4],[5],[15],[16]   1.00%
Principal amount 400  
Net Realized Gain (Loss) For Period 0  
Amount of Investment Income 3  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 0  
Gross Additions 400  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) 0  
Ending balance 400  
Investment, Identifier [Axis]: PSI Molded Plastics, Inc. – Term Debt 2    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal amount 0  
Net Realized Gain (Loss) For Period 0  
Amount of Investment Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 10,616  
Gross Additions 0  
Gross Reductions (10,616)  
Net Unrealized Appreciation (Depreciation)  
Ending balance $ 0  
Investment, Identifier [Axis]: Phoenix Door Systems, Inc – Line of Credit    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [1],[2],[4],[5],[15] 10.70%  
Investment, reference rate and spread [1],[2],[4],[5],[15] 7.00%  
Line of credit facility, available [1],[2],[4],[5],[15] $ 0  
Principal amount [12],[14],[15] 2,950  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [15] $ 2,950  
Investment, Identifier [Axis]: Phoenix Door Systems, Inc. – Common Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Shares 4,221 [12],[13],[14],[15] 4,221 [18],[19],[20],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [19],[21] $ 0  
Ending balance [13],[15] 0  
Investment, Identifier [Axis]: Phoenix Door Systems, Inc. – Line of Credit    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [6],[7],[9],[10],[21]   5.70%
Investment, reference rate and spread [6],[7],[9],[10],[21]   1.40%
Line of credit facility, available [6],[7],[9],[10],[21]   $ 0
Principal amount [18],[20],[21]   $ 2,950
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [21] $ 2,950  
Investment, Identifier [Axis]: Phoenix Door Systems, Inc. – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate 14.70% [1],[2],[4],[5],[15] 7.70% [6],[7],[9],[10],[21]
Investment, reference rate and spread 11.00% [1],[2],[4],[5],[15] 3.40% [6],[7],[9],[10],[21]
Principal amount $ 3,200 [12],[14],[15] $ 3,200 [18],[20],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [21] 3,200  
Ending balance [15] 3,200  
Investment, Identifier [Axis]: Pyrotek Special Effects, Inc. - Line of Credit    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [6],[7],[9],[10],[21],[22],[31]   10.00%
Investment, reference rate and spread [6],[7],[9],[10],[21],[22],[31]   5.00%
Line of credit facility, available [6],[7],[9],[10],[21],[22],[31]   $ 500
Principal amount [18],[20],[21],[22],[31]   $ 2,500
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [21],[22],[31] 2,500  
Investment, Identifier [Axis]: Pyrotek Special Effects, Inc. - Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [6],[7],[9],[10],[21],[22],[31]   13.00%
Investment, reference rate and spread [6],[7],[9],[10],[21],[22],[31]   8.00%
Principal amount 20,120 [12],[14],[15],[16],[32] $ 20,120 [18],[20],[21],[22],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [21],[22],[31] 20,120  
Ending balance [15],[16],[32] 20,120  
Investment, Identifier [Axis]: Pyrotek Special Effects, Inc. – Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Net Realized Gain (Loss) For Period 0  
Amount of Investment Income $ 0  
Principal Shares 7,060  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance $ 7,260  
Gross Additions 0  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) (5,425)  
Ending balance $ 1,835  
Investment, Identifier [Axis]: Pyrotek Special Effects, Inc. – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [1],[2],[4],[5],[15],[16],[32] 13.00%  
Investment, reference rate and spread [1],[2],[4],[5],[15],[16],[32] 8.00%  
Principal amount $ 20,120  
Net Realized Gain (Loss) For Period 0  
Amount of Investment Income 2,652  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 20,120  
Gross Additions 0  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) 0  
Ending balance $ 20,120  
Investment, Identifier [Axis]: Pyrotek Special Effects, Inc.. – Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Shares 7,060 [12],[13],[14],[15],[16],[32] 7,060,000 [18],[19],[20],[21],[22],[31]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [19],[21],[22],[31] $ 7,260  
Ending balance [13],[15],[16],[32] 1,835  
Investment, Identifier [Axis]: Pyrotek Special Effects, Inc.– Line of Credit    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal amount 0  
Net Realized Gain (Loss) For Period 0  
Amount of Investment Income 68  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 2,500  
Gross Additions 0  
Gross Reductions (2,500)  
Net Unrealized Appreciation (Depreciation) 0  
Ending balance 0  
Investment, Identifier [Axis]: Ricardo Defense, Inc. - Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Shares [17],[18],[19],[20],[21]   17,388
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [17],[19],[21] 17,388  
Investment, Identifier [Axis]: Ricardo Defense, Inc. – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [6],[7],[9],[10],[17],[21]   13.30%
Investment, reference rate and spread [6],[7],[9],[10],[17],[21]   9.00%
Principal amount [17],[18],[20],[21]   $ 61,305
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [17],[21] $ 61,305  
Investment, Identifier [Axis]: Rowan Energy Inc. – Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Shares [12],[13],[14],[15] 7,298  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [13],[15] $ 7,495  
Investment, Identifier [Axis]: Rowan Energy Inc. – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [1],[2],[4],[5],[15] 14.50%  
Investment, reference rate and spread [1],[2],[4],[5],[15] 9.00%  
Principal amount [12],[14],[15] $ 25,790  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [15] $ 25,790  
Investment, Identifier [Axis]: SFEG Holdings, Inc. – Common Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Shares 18,721 [12],[13],[14],[15] 18,721 [18],[19],[20],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [19],[21] $ 50,788  
Ending balance [13],[15] 204,048  
Investment, Identifier [Axis]: SFEG Holdings, Inc. – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [6],[7],[9],[10],[21]   12.50%
Investment, reference rate and spread [6],[7],[9],[10],[21]   7.00%
Principal amount [18],[20],[21]   $ 54,644
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [21] $ 54,644  
Investment, Identifier [Axis]: SFEG Holdings, Inc. – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [1],[2],[4],[5],[15] 12.50%  
Investment, reference rate and spread [1],[2],[4],[5],[15] 7.00%  
Principal amount [12],[14],[15] $ 54,644  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [15] $ 54,644  
Investment, Identifier [Axis]: Schylling, Inc. – Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Shares 4,000 [12],[13],[14],[15] 4,000 [18],[19],[20],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [19],[21] $ 20,599  
Ending balance [13],[15] $ 66,403  
Investment, Identifier [Axis]: Schylling, Inc. – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate 14.70% [1],[2],[4],[5],[15] 15.30% [6],[7],[9],[10],[21]
Investment, reference rate and spread 11.00% [1],[2],[4],[5],[15] 11.00% [6],[7],[9],[10],[21]
Principal amount $ 16,981 [12],[14],[15] $ 27,981 [18],[20],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [21] 27,981  
Ending balance [15] $ 16,981  
Investment, Identifier [Axis]: Smart Chemical Solutions, LLC - Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Shares [11],[12],[13],[14],[15] 13,843  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [11],[13],[15] $ 7,327  
Investment, Identifier [Axis]: Smart Chemical Solutions, LLC – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [1],[2],[4],[5],[11],[15] 13.50%  
Investment, reference rate and spread [1],[2],[4],[5],[11],[15] 9.00%  
Principal amount [11],[12],[14],[15] $ 35,660  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [11],[15] $ 35,660  
Investment, Identifier [Axis]: Sun State Nursery and Landscaping, LLC – Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Shares [12],[13],[14],[15] 3,059  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [13],[15] $ 3,718  
Investment, Identifier [Axis]: Sun State Nursery and Landscaping, LLC – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [1],[2],[4],[5],[15] 13.50%  
Investment, reference rate and spread [1],[2],[4],[5],[15] 9.00%  
Principal amount [12],[14],[15] $ 9,520  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [15] $ 9,520  
Investment, Identifier [Axis]: The E3 Company, LLC – Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Shares 11,233,000 [12],[13],[14],[15] 11,233 [18],[19],[20],[21]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [19],[21] $ 35,839  
Ending balance [13],[15] 58,570  
Investment, Identifier [Axis]: The E3 Company, LLC – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [6],[7],[9],[10],[21]   13.50%
Investment, reference rate and spread [6],[7],[9],[10],[21]   9.00%
Principal amount [18],[20],[21]   $ 33,750
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [21] $ 33,750  
Investment, Identifier [Axis]: The E3 Company, LLC – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [1],[2],[4],[5],[15] 13.50%  
Investment, reference rate and spread [1],[2],[4],[5],[15] 9.00%  
Principal amount [12],[14],[15] $ 33,750  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [15] 33,750  
Investment, Identifier [Axis]: The Maids International, LLC - Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Net Realized Gain (Loss) For Period 0  
Amount of Investment Income $ 0  
Principal Shares 6,640  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance $ 8,410  
Gross Additions 0  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) (3,779)  
Ending balance $ 4,631  
Investment, Identifier [Axis]: The Maids International, LLC – Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Shares 6,640 [12],[13],[14],[15],[16] 6,640 [18],[19],[20],[21],[22]
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [19],[21],[22] $ 8,410  
Ending balance [13],[15],[16] 4,631  
Investment, Identifier [Axis]: The Maids International, LLC – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [6],[7],[9],[10],[21],[22]   14.80%
Investment, reference rate and spread [6],[7],[9],[10],[21],[22]   10.50%
Principal amount [18],[20],[21],[22]   $ 28,560
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [21],[22] $ 28,560  
Investment, Identifier [Axis]: The Maids International, LLC – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [1],[2],[4],[5],[15],[16] 14.20%  
Investment, reference rate and spread [1],[2],[4],[5],[15],[16] 10.50%  
Principal amount [12],[14],[15],[16] $ 28,560  
Net Realized Gain (Loss) For Period 0  
Amount of Investment Income 4,223  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 28,560  
Gross Additions 0  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) 0  
Ending balance [15],[16] $ 28,560  
Investment, Identifier [Axis]: UPB Acquisition, Inc – Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Shares [12],[13],[14],[15],[16] 6,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Ending balance [13],[15],[16] $ 26,713  
Investment, Identifier [Axis]: UPB Acquisition, Inc. - Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Net Realized Gain (Loss) For Period 0  
Amount of Investment Income $ 2,402  
Principal Shares 6,000  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance $ 26,010  
Gross Additions 0  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) 703  
Ending balance 26,713  
Investment, Identifier [Axis]: UPB Acquisition, Inc. – Preferred Stock    
Investments in and Advances to Affiliates, Activity [Line Items]    
Principal Shares [18],[19],[20],[21],[22]   6,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [19],[21],[22] $ 26,010  
Investment, Identifier [Axis]: UPB Acquisition, Inc. – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [1],[2],[4],[5],[15],[16] 13.70%  
Investment, reference rate and spread [1],[2],[4],[5],[15],[16] 10.00%  
Principal amount [12],[14],[15],[16] $ 11,000  
Net Realized Gain (Loss) For Period 0  
Amount of Investment Income 2,376  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 15,000  
Gross Additions 0  
Gross Reductions (4,000)  
Net Unrealized Appreciation (Depreciation) 0  
Ending balance [15],[16] 11,000  
Investment, Identifier [Axis]: UPB Acquisition, Inc. – Term Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment interest rate [6],[7],[9],[10],[21],[22]   14.30%
Investment, reference rate and spread [6],[7],[9],[10],[21],[22]   10.00%
Principal amount [18],[20],[21],[22]   $ 15,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [21],[22] 15,000  
Diversified/Conglomerate Services    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 170,360  
Ending balance 189,148  
Electronics    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 71,573  
Ending balance 62,723  
Home and Office Furnishings, Housewares, and Durable Consumer Products    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 159,236  
Ending balance 166,553  
Leisure, Amusement, Motion Pictures, and Entertainment    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 78,460  
Ending balance 105,339  
Mining, Steel, Iron and Non-Precious Metals    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 41,010  
Ending balance 37,713  
Telecommunications    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 7,585  
Ending balance 7,942  
Chemicals, Plastics, and Rubber    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 11,612  
Ending balance 49,715  
Diversified/Conglomerate Manufacturing    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 6,493  
Ending balance 6,763  
Secured First Lien Debt    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 514,334  
Ending balance 570,602  
Secured Second Lien Debt    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 103,580  
Ending balance 99,197  
Preferred Equity    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 302,163  
Ending balance 426,949  
Common Equity/ Equivalents    
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 59,243  
Ending balance 212,500  
Investment, Affiliate And Control    
Investments in and Advances to Affiliates, Activity [Line Items]    
Net Realized Gain (Loss) For Period (26,457)  
Amount of Investment Income 31,627  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 330,731  
Gross Additions 12,536  
Gross Reductions (48,124)  
Net Unrealized Appreciation (Depreciation) 30,146  
Ending balance $ 325,289  
Affiliate investments    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment owned, percent of net assets 48.60% [1],[2],[4],[5],[16] 66.10% [6],[7],[9],[10],[22]
Net Realized Gain (Loss) For Period $ (26,457)  
Amount of Investment Income 31,627  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [22] 330,388  
Gross Additions 12,536  
Gross Reductions (48,124)  
Net Unrealized Appreciation (Depreciation) 29,876  
Ending balance [16] $ 324,676  
Affiliate investments | Secured First Lien Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment owned, percent of net assets 29.40% [1],[2],[4],[5],[16] 42.70% [6],[7],[9],[10],[22]
Net Realized Gain (Loss) For Period $ (29,938)  
Amount of Investment Income 26,565  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [22] 213,240  
Gross Additions 120  
Gross Reductions (37,508)  
Net Unrealized Appreciation (Depreciation) 19,852  
Ending balance [16] $ 195,704  
Affiliate investments | Secured First Lien Debt | Diversified/Conglomerate Services    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment owned, percent of net assets 10.60% [1],[2],[4],[5],[16] 16.20% [6],[7],[9],[10],[22]
Net Realized Gain (Loss) For Period $ (29,938)  
Amount of Investment Income 9,247  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [22] 80,883  
Gross Additions 0  
Gross Reductions (29,938)  
Net Unrealized Appreciation (Depreciation) 19,615  
Ending balance [16] $ 70,560  
Affiliate investments | Secured First Lien Debt | Electronics    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment owned, percent of net assets 7.20% [1],[2],[4],[5],[16] 9.90% [6],[7],[9],[10],[22]
Net Realized Gain (Loss) For Period $ 0  
Amount of Investment Income 6,604  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [22] 49,152  
Gross Additions 0  
Gross Reductions (1,070)  
Net Unrealized Appreciation (Depreciation) 0  
Ending balance $ 48,082  
Affiliate investments | Secured First Lien Debt | Home and Office Furnishings, Housewares, and Durable Consumer Products    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment owned, percent of net assets 5.70% [1],[2],[4],[5],[16] 7.60% [6],[7],[9],[10],[22]
Affiliate investments | Secured First Lien Debt | Leisure, Amusement, Motion Pictures, and Entertainment    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment owned, percent of net assets 3.00% [1],[2],[4],[5],[16] 4.50% [6],[7],[9],[10],[22]
Net Realized Gain (Loss) For Period $ 0  
Amount of Investment Income 2,720  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [22] 22,620  
Gross Additions 0  
Gross Reductions (2,500)  
Net Unrealized Appreciation (Depreciation) 0  
Ending balance $ 20,120  
Affiliate investments | Secured First Lien Debt | Mining, Steel, Iron and Non-Precious Metals    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment owned, percent of net assets 1.60% [16] 3.00% [6],[7],[9],[10],[22]
Affiliate investments | Secured First Lien Debt | Telecommunications    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment owned, percent of net assets 1.30% [1],[2],[4],[5],[16] 1.50% [6],[7],[9],[10],[22]
Net Realized Gain (Loss) For Period $ 0  
Amount of Investment Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [22] 7,585  
Gross Additions 120  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) 237  
Ending balance [16] $ 7,942  
Affiliate investments | Secured Second Lien Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment owned, percent of net assets 0.30% [16] 2.10% [6],[7],[9],[10],[22]
Net Realized Gain (Loss) For Period $ 0  
Amount of Investment Income 13  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [22] 10,616  
Gross Additions 1,800  
Gross Reductions (10,616)  
Net Unrealized Appreciation (Depreciation) 0  
Ending balance [16] $ 1,800  
Affiliate investments | Secured Second Lien Debt | Chemicals, Plastics, and Rubber    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment owned, percent of net assets 0.30% [16] 2.10% [6],[7],[9],[10],[22]
Net Realized Gain (Loss) For Period $ 0  
Amount of Investment Income 13  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance 10,616  
Gross Additions 1,800  
Gross Reductions (10,616)  
Net Unrealized Appreciation (Depreciation) 0  
Ending balance [16] $ 1,800  
Affiliate investments | Preferred Equity    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment owned, percent of net assets 18.20% [1],[2],[4],[5],[16] 20.30% [6],[7],[9],[10],[22]
Net Realized Gain (Loss) For Period $ 3,481  
Amount of Investment Income 4,705  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [22] 101,557  
Gross Additions 10,616  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) 9,994  
Ending balance [16] $ 122,167  
Affiliate investments | Preferred Equity | Diversified/Conglomerate Services    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment owned, percent of net assets 6.60% [1],[2],[4],[5],[16] 4.30% [6],[7],[9],[10],[22]
Net Realized Gain (Loss) For Period $ 0  
Amount of Investment Income 1,386  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [22] 21,331  
Gross Additions 0  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) 22,989  
Ending balance [16] $ 44,320  
Affiliate investments | Preferred Equity | Electronics    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment owned, percent of net assets 2.20% [1],[2],[4],[5],[16] 4.50% [6],[7],[9],[10],[22]
Affiliate investments | Preferred Equity | Home and Office Furnishings, Housewares, and Durable Consumer Products    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment owned, percent of net assets 4.40% [1],[2],[4],[5],[16] 4.70% [6],[7],[9],[10],[22]
Affiliate investments | Preferred Equity | Leisure, Amusement, Motion Pictures, and Entertainment    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment owned, percent of net assets 0.30% [1],[2],[4],[5],[16] 1.40% [6],[7],[9],[10],[22]
Affiliate investments | Preferred Equity | Mining, Steel, Iron and Non-Precious Metals    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment owned, percent of net assets 4.00% [1],[2],[4],[5],[16] 5.20% [6],[7],[9],[10],[22]
Affiliate investments | Preferred Equity | Telecommunications    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment owned, percent of net assets 0.00% [1],[2],[4],[5],[16] 0.00% [6],[7],[9],[10],[22]
Affiliate investments | Preferred Equity | Chemicals, Plastics, and Rubber    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment owned, percent of net assets 0.70% [1],[2],[4],[5],[16] 0.20% [6],[7],[9],[10],[22]
Affiliate investments | Common Equity/ Equivalents    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment owned, percent of net assets 0.70% [1],[2],[4],[5],[16] 1.00% [6],[7],[9],[10],[22]
Net Realized Gain (Loss) For Period $ 0  
Amount of Investment Income 344  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [22] 4,975  
Gross Additions 0  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) 30  
Ending balance [16] $ 5,005  
Affiliate investments | Common Equity/ Equivalents | Diversified/Conglomerate Services    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment owned, percent of net assets [1],[2],[4],[5],[16] 0.70%  
Affiliate investments | Common Equity/ Equivalents | Telecommunications    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment owned, percent of net assets 0.00% [1],[2],[4],[5],[16] 0.00% [6],[7],[9],[10],[22]
Control investments    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment owned, percent of net assets 0.10% [1],[2],[4],[5],[33] 0.10% [6],[7],[9],[10],[34]
Net Realized Gain (Loss) For Period $ 0  
Amount of Investment Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [34] 343  
Gross Additions 0  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) 270  
Ending balance [33] $ 613  
Control investments | Secured First Lien Debt    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment owned, percent of net assets 0.10% [1],[2],[4],[5],[33] 0.10% [6],[7],[9],[10],[34]
Net Realized Gain (Loss) For Period $ 0  
Amount of Investment Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [34] 343  
Gross Additions 0  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) 270  
Ending balance [33] $ 613  
Control investments | Secured First Lien Debt | Diversified/Conglomerate Manufacturing    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment owned, percent of net assets 0.10% [1],[2],[4],[5],[33] 0.10% [6],[7],[9],[10],[34]
Control investments | Preferred Equity    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment owned, percent of net assets 0.00% [1],[2],[4],[5],[33] 0.00% [6],[7],[9],[10],[34]
Net Realized Gain (Loss) For Period $ 0  
Amount of Investment Income 0  
Investments in and Advances to Affiliates, at Fair Value [Roll Forward]    
Beginning balance [34] 0  
Gross Additions 0  
Gross Reductions 0  
Net Unrealized Appreciation (Depreciation) 0  
Ending balance [33] $ 0  
Control investments | Preferred Equity | Diversified/Conglomerate Manufacturing    
Investments in and Advances to Affiliates, Activity [Line Items]    
Investment owned, percent of net assets 0.00% [1],[2],[4],[5],[33] 0.00% [6],[7],[9],[10],[34]
[1] Certain of the securities listed are issued by affiliate(s) of the indicated portfolio company. The majority of the securities listed, totaling $1.2 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 March 31, 2026, 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 2.1% of total investments, at fair value, as of March 31, 2026.
[2] Category percentages represent the fair value of each category and subcategory as a percentage of net assets as of March 31, 2026.
[3] Cumulative gross unrealized appreciation for federal income tax purposes is $428.5 million; cumulative gross unrealized depreciation for federal income tax purposes is $173.7 million. Cumulative net unrealized appreciation is $254.8 million, based on a tax cost of $1.1 billion.
[4] Unless indicated otherwise, all cash interest rates are indexed to 30-day Secured Overnight Financing Rate ("SOFR"), which was 3.7% as of March 31, 2026. 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.
[5] 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 Measurement" ("ASC 820") fair value hierarchy. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.
[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 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.
[10] 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.
[11] 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.
[12] Represents the principal balance, presented in thousands, for debt investments, the cash balance, presented in thousands, for cash equivalents, and the number of shares/units held for equity investments. Warrants are represented as a percentage of ownership, as applicable.
[13] Security is non-income producing.
[14] Where applicable, aggregates all shares of a class of stock owned without regard to specific series owned within such class (some series of which may or may not be voting shares) or aggregates all warrants to purchase shares of a class of stock owned without regard to specific series of such class of stock such warrants allow us to purchase.
[15] 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.
[16] 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.
[17] 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.
[18] Represents the principal balance, presented in thousands, for debt investments, the cash balance, presented in thousands, for cash equivalents, and the number of shares/units held for equity investments. Warrants are represented as a percentage of ownership, as applicable.
[19] Security is non-income producing.
[20] Where applicable, aggregates all shares of a class of stock owned without regard to specific series owned within such class (some series of which may or may not be voting shares) or aggregates all warrants to purchase shares of a class of stock owned without regard to specific series of such class of stock such warrants allow us to purchase.
[21] 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.
[22] 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.
[23] Debt security is on non-accrual status.
[24] Debt security is on non-accrual status.
[25] The portfolio company changed its name from Ricardo Defense, Inc. to Detroit Defense, Inc. during the year ended March 31, 2026.
[26] 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.
[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] 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.
[29] Fair value was based on net asset value provided by the underlying fund as a practical expedient.
[30] Fair value was based on net asset value, provided by the underlying fund, as a practical expedient.
[31] This portfolio company is headquartered in Ontario, Canada.
[32] This portfolio company is headquartered in Ontario, Canada.
[33] 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.
[34] 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.