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INVESTMENTS IN AND ADVANCES TO AFFILIATES (Details) - USD ($) | 12 Months Ended
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Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2022
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Investment owned, percent of net assets |  | 169.10% | [1],[2],[3],[4],[5] | 172.50% | [6],[7],[8],[9],[10] |
Net Realized Gain (Loss) for Period |  | $ 5,959,000 |  | $ 12,664,000 |  | $ 5,173,000
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [8] | 704,815,000 |  |  |  |
Ending Balance |  | 796,260,000 | [5] | 704,815,000 | [8] |
Diversified/Conglomerate Manufacturing |  |  |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance |  | 158,061,000 |  |  |  |
Ending Balance |  | 160,264,000 |  | 158,061,000 |  |
Diversified/Conglomerate Service |  |  |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance |  | 135,060,000 |  |  |  |
Ending Balance |  | 179,032,000 |  | 135,060,000 |  |
Automobile |  |  |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance |  | 27,571,000 |  |  |  |
Ending Balance |  | 28,286,000 |  | 27,571,000 |  |
Machinery |  |  |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance |  | 6,411,000 |  |  |  |
Ending Balance |  | 21,816,000 |  | 6,411,000 |  |
Secured first lien debt |  |  |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance |  | 510,701,000 |  |  |  |
Ending Balance |  | 554,937,000 |  | 510,701,000 |  |
Secured second lien debt |  |  |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance |  | 127,854,000 |  |  |  |
Ending Balance |  | 113,716,000 |  | 127,854,000 |  |
Preferred equity |  |  |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance |  | 26,855,000 |  |  |  |
Ending Balance |  | 31,346,000 |  | 26,855,000 |  |
Common equity/equivalents |  |  |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance |  | 39,381,000 |  |  |  |
Ending Balance |  | $ 96,229,000 |  | $ 39,381,000 |  |
Affiliate investments |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Investment owned, percent of net assets |  | 1.60% | [1],[2],[3],[4],[11] | 2.60% | [6],[7],[9],[10],[12] |
Net Realized Gain (Loss) for Period |  | $ 0 |  | $ 0 |  | 13,408,000
Amount of Investment Income |  | 0 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [12] | 10,421,000 |  |  |  |
Gross Additions |  | 0 |  |  |  |
Gross Reductions |  | 0 |  |  |  |
Net Unrealized Appreciation (Depreciation) |  | (2,983,000) |  |  |  |
Ending Balance |  | $ 7,438,000 | [11] | $ 10,421,000 | [12] |
Affiliate investments | Secured first lien debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Investment owned, percent of net assets |  | 0.10% | [1],[2],[3],[4],[11] | 0.70% | [6],[7],[9],[10],[12] |
Affiliate 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],[3],[4],[11] | 0.70% | [6],[7],[9],[10],[12] |
Affiliate investments | Preferred equity |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Investment owned, percent of net assets |  | 0.90% | [1],[2],[3],[4],[11] | 1.30% | [6],[7],[9],[10],[12] |
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 | [12] | 5,122,000 |  |  |  |
Gross Additions |  | 0 |  |  |  |
Gross Reductions |  | 0 |  |  |  |
Net Unrealized Appreciation (Depreciation) |  | (1,023,000) |  |  |  |
Ending Balance |  | $ 4,099,000 | [11] | $ 5,122,000 | [12] |
Affiliate 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],[3],[4],[11] | 0.00% | [6],[7],[9],[10],[12] |
Affiliate investments | Preferred equity | Diversified/Conglomerate Service |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Investment owned, percent of net assets | [1],[2],[3],[4],[11] | 0.70% |  |  |  |
Affiliate investments | Preferred equity | Personal and Non-Durable Consumer Products (Manufacturing Only) |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Investment owned, percent of net assets |  | 0.20% | [1],[2],[3],[4],[11] | 0.20% | [6],[7],[9],[10],[12] |
Affiliate investments | Common equity/equivalents |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Investment owned, percent of net assets |  | 0.60% | [1],[2],[3],[4],[11] | 0.60% | [6],[7],[9],[10],[12] |
Affiliate investments | Common equity/equivalents | Personal and Non-Durable Consumer Products (Manufacturing Only) |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Investment owned, percent of net assets |  | 0.60% | [1],[2],[3],[4],[11] | 0.60% | [6],[7],[9],[10],[12] |
Control investments |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Investment owned, percent of net assets |  | 8.00% | [1],[2],[3],[4],[13] | 7.50% | [6],[7],[9],[10],[14] |
Net Realized Gain (Loss) for Period |  | $ 259,000 |  | $ 2,684,000 |  | $ (8,496,000)
Amount of Investment Income |  | 2,074,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [14] | 30,850,000 |  |  |  |
Gross Additions |  | 4,949,000 |  |  |  |
Gross Reductions |  | (1,291,000) |  |  |  |
Net Unrealized Appreciation (Depreciation) |  | 3,410,000 |  |  |  |
Ending Balance |  | $ 37,918,000 | [13] | $ 30,850,000 | [14] |
Control investments | Secured first lien debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Investment owned, percent of net assets |  | 3.00% | [1],[2],[3],[4],[13] | 3.90% | [6],[7],[9],[10],[14] |
Net Realized Gain (Loss) for Period |  | $ 0 |  |  |  |
Amount of Investment Income |  | 931,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [14] | 16,120,000 |  |  |  |
Gross Additions |  | 3,585,000 |  |  |  |
Gross Reductions |  | (1,050,000) |  |  |  |
Net Unrealized Appreciation (Depreciation) |  | (4,759,000) |  |  |  |
Ending Balance |  | $ 13,896,000 | [13] | $ 16,120,000 | [14] |
Control investments | Secured first lien debt | Diversified/Conglomerate Manufacturing |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Investment owned, percent of net assets |  | 0.90% | [1],[2],[3],[4],[13] | 0.90% | [6],[7],[9],[10],[14] |
Net Realized Gain (Loss) for Period |  | $ 0 |  |  |  |
Amount of Investment Income |  | 402,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance |  | 3,927,000 |  |  |  |
Gross Additions |  | 303,000 |  |  |  |
Gross Reductions |  | (100,000) |  |  |  |
Net Unrealized Appreciation (Depreciation) |  | 70,000 |  |  |  |
Ending Balance |  | $ 4,200,000 |  | $ 3,927,000 |  |
Control investments | Secured first lien debt | Personal and Non-Durable Consumer Products (Manufacturing Only) |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Investment owned, percent of net assets |  | 2.10% | [1],[2],[3],[4],[13] | 2.80% | [6],[7],[9],[10],[14] |
Net Realized Gain (Loss) for Period |  | $ 0 |  |  |  |
Amount of Investment Income |  | 461,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [14] | 11,293,000 |  |  |  |
Gross Additions |  | 3,282,000 |  |  |  |
Gross Reductions |  | (50,000) |  |  |  |
Net Unrealized Appreciation (Depreciation) |  | (4,829,000) |  |  |  |
Ending Balance |  | $ 9,696,000 | [13] | $ 11,293,000 | [14] |
Control investments | Secured first lien debt | Printing and Publishing |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Investment owned, percent of net assets |  | 0.00% | [1],[2],[3],[4],[13] | 0.20% | [6],[7],[9],[10],[14] |
Control investments | Secured second lien debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Investment owned, percent of net assets |  | 1.80% | [1],[2],[3],[4],[13] | 1.80% | [6],[7],[9],[10],[14] |
Control investments | Secured second lien debt | Automobile |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Investment owned, percent of net assets |  | 1.80% | [1],[2],[3],[4],[13] | 1.80% | [6],[7],[9],[10],[14] |
Control investments | Preferred equity |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Investment owned, percent of net assets |  | 0.00% | [1],[2],[3],[4],[13] | 0.00% | [6],[7],[9],[10],[14] |
Control investments | Preferred equity | Personal and Non-Durable Consumer Products (Manufacturing Only) |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Investment owned, percent of net assets |  | 0.00% | [1],[2],[3],[4],[13] | 0.00% | [6],[7],[9],[10],[14] |
Control investments | Common equity/equivalents |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Investment owned, percent of net assets |  | 3.20% | [1],[2],[3],[4],[13] | 1.80% | [6],[7],[9],[10],[14] |
Net Realized Gain (Loss) for Period |  | $ 259,000 |  |  |  |
Amount of Investment Income |  | 0 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [14] | 7,305,000 |  |  |  |
Gross Additions |  | 2,000 |  |  |  |
Gross Reductions |  | (1,000) |  |  |  |
Net Unrealized Appreciation (Depreciation) |  | 8,169,000 |  |  |  |
Ending Balance |  | $ 15,475,000 | [13] | $ 7,305,000 | [14] |
Control investments | Common equity/equivalents | Diversified/Conglomerate Manufacturing |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Investment owned, percent of net assets |  | 1.70% | [1],[2],[3],[4],[13] | 0.00% | [6],[7],[9],[10],[14] |
Control investments | Common equity/equivalents | Personal and Non-Durable Consumer Products (Manufacturing Only) |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Investment owned, percent of net assets | [1],[2],[3],[4],[13] | 0.00% |  |  |  |
Control investments | Common equity/equivalents | Printing and Publishing |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Investment owned, percent of net assets |  | 0.90% | [1],[2],[3],[4],[13] | 0.70% | [6],[7],[9],[10],[14] |
Control investments | Common equity/equivalents | Automobile |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Investment owned, percent of net assets |  | 0.60% | [1],[2],[3],[4],[13] | 1.00% | [6],[7],[9],[10],[14] |
Control investments | Common equity/equivalents | Machinery |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Investment owned, percent of net assets |  | 0.00% |  | 0.10% | [6],[7],[9],[10],[14] |
Investment, Identifier [Axis]: 8th Avenue Food & Provisions, Inc. – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 3,683,000 | [15],[16],[17] | $ 3,683,000 | [18],[19],[20] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [18] | 2,495,000 |  |  |  |
Ending Balance |  | $ 3,241,000 | [15] | $ 2,495,000 | [18] |
Investment, reference rate and spread |  | 7.90% | [1],[2],[3],[4],[15] | 7.90% | [6],[7],[9],[10],[18] |
Investment, interest rate, paid in cash |  | 12.70% | [1],[2],[3],[4],[15] | 13.20% | [6],[7],[9],[10],[18] |
Investment, Identifier [Axis]: ALS Education, LLC – Line of Credit |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 0 | [16],[17],[21] | $ 0 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 0 |  |  |  |
Ending Balance |  | 0 | [21] | 0 | [22] |
Line of credit facility, available |  | $ 3,000,000 | [1],[2],[3],[4],[21] | $ 3,000,000 | [6],[7],[9],[10],[22] |
Investment, reference rate and spread |  | 6.80% | [1],[2],[3],[4],[21] | 7.00% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 11.60% | [1],[2],[3],[4],[21] | 12.30% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: ALS Education, LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 31,680,000 | [16],[17],[21] | $ 18,700,000 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 18,700,000 |  |  |  |
Ending Balance |  | $ 31,997,000 | [21] | $ 18,700,000 | [22] |
Investment, reference rate and spread |  | 6.80% | [1],[2],[3],[4],[21] | 7.00% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 11.60% | [1],[2],[3],[4],[21] | 12.30% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: Antenna Research Associates, Inc. – Common Equity Units |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 4,283 | [16],[17],[23],[24],[25] | 4,283 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 18,436,000 |  |  |  |
Ending Balance |  | 59,423,000 | [23],[24],[25] | $ 18,436,000 | [26],[27] |
Investment, Identifier [Axis]: Antenna Research Associates, Inc. – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [16],[17],[23],[25] | 31,267,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Ending Balance | [23],[25] | $ 31,267,000 |  |  |  |
Investment, reference rate and spread | [1],[2],[3],[4],[23],[25] | 10.00% |  |  |  |
Investment, interest rate, paid in cash | [1],[2],[3],[4],[23],[25] | 14.80% |  |  |  |
Investment, Identifier [Axis]: Antenna Research Associates, Inc. – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [19],[20],[27] |  |  | 30,048,000 |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [27] | $ 30,048,000 |  |  |  |
Ending Balance | [27] |  |  | $ 30,048,000 |  |
Investment, reference rate and spread | [6],[7],[9],[10],[27] |  |  | 10.00% |  |
Investment, interest rate, paid in cash | [6],[7],[9],[10],[27] |  |  | 15.30% |  |
Investment, Identifier [Axis]: Arc Drilling Holdings LLC – Common Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 53,333 | [16],[17],[24],[25] | 15,000 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 403,000 |  |  |  |
Ending Balance |  | 4,816,000 | [24],[25] | $ 403,000 | [26],[27] |
Investment, Identifier [Axis]: Arc Drilling Holdings LLC – Line of Credit |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 1,000,000 | [16],[17],[21] | 0 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 0 |  |  |  |
Ending Balance |  | 1,000,000 | [21] | 0 | [22] |
Line of credit facility, available |  | $ 4,000,000 | [1],[2],[3],[4],[21] | $ 1,000,000 | [6],[7],[9],[10],[22] |
Investment, reference rate and spread |  | 7.00% | [1],[2],[3],[4],[21] | 11.50% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 11.80% | [1],[2],[3],[4],[21] | 10.50% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: Arc Drilling Holdings LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 16,000,000 | [16],[17],[21] | $ 5,928,000 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 5,724,000 |  |  |  |
Ending Balance |  | $ 16,000,000 | [21] | $ 5,724,000 | [22] |
Investment, reference rate and spread |  | 7.00% | [1],[2],[3],[4],[21] | 11.50% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 11.80% | [1],[2],[3],[4],[21] | 10.50% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: Axios Industrial Group, LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [19],[20],[22] |  |  | $ 11,550,000 |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | $ 11,291,000 |  |  |  |
Ending Balance | [22] |  |  | $ 11,291,000 |  |
Investment, reference rate and spread | [6],[7],[9],[10],[22] |  |  | 8.60% |  |
Investment, interest rate, paid in cash | [6],[7],[9],[10],[22] |  |  | 13.90% |  |
Investment, Identifier [Axis]: Axios Industrial Group, LLC – Term Debt 1 |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [16],[17],[21] | 11,325,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Ending Balance | [21] | $ 11,357,000 |  |  |  |
Investment, reference rate and spread | [1],[2],[3],[4],[21] | 9.60% |  |  |  |
Investment, interest rate, paid in cash | [1],[2],[3],[4],[21] | 14.40% |  |  |  |
Investment, Identifier [Axis]: Axios Industrial Group, LLC – Term Debt 2 |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [16],[17],[21] | $ 3,000,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Ending Balance | [21] | $ 3,008,000 |  |  |  |
Investment, reference rate and spread | [1],[2],[3],[4],[21] | 12.60% |  |  |  |
Investment, interest rate, paid in cash | [1],[2],[3],[4],[21] | 17.40% |  |  |  |
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Common Stock Warrant |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Units |  | 1.50% | [16],[17],[24],[25],[28] | 1.50% | [19],[20],[26],[27],[29] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27],[29] | $ 0 |  |  |  |
Ending Balance |  | 0 | [24],[25],[28] | $ 0 | [26],[27],[29] |
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Line of Credit |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [19],[20],[22],[29] |  |  | 1,200,000 |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22],[29] | 978,000 |  |  |  |
Ending Balance | [22],[29] |  |  | 978,000 |  |
Line of credit facility, available | [6],[7],[9],[10],[22],[29] |  |  | $ 0 |  |
Investment, reference rate and spread | [6],[7],[9],[10],[22],[29] |  |  | 2.00% |  |
Investment, interest rate, paid in cash | [6],[7],[9],[10],[22],[29] |  |  | 7.30% |  |
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Line of Credit 1 |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [16],[17],[25],[28],[30] | 1,320,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Ending Balance | [25],[28],[30] | 471,000 |  |  |  |
Line of credit facility, available | [1],[2],[3],[4],[25],[28],[30] | $ 0 |  |  |  |
Investment, reference rate and spread | [1],[2],[3],[4],[25],[28],[30] | 2.00% |  |  |  |
Investment, interest rate, paid in cash | [1],[2],[3],[4],[25],[28],[30] | 7.00% |  |  |  |
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Line of Credit 2 |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [16],[17],[25],[28],[30] | $ 323,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Ending Balance | [25],[28],[30] | 115,000 |  |  |  |
Line of credit facility, available | [1],[2],[3],[4],[25],[28],[30] | $ 127,000 |  |  |  |
Investment, reference rate and spread | [1],[2],[3],[4],[25],[28],[30] | 2.00% |  |  |  |
Investment, interest rate, paid in cash | [1],[2],[3],[4],[25],[28],[30] | 7.00% |  |  |  |
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Preferred Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares | [19],[20],[26],[27],[29] |  |  | 6,130 |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27],[29] | $ 0 |  |  |  |
Ending Balance | [26],[27],[29] |  |  | $ 0 |  |
Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 6,000,000 | [16],[17],[25],[28],[30] | 6,000,000 | [19],[20],[22],[29] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22],[29] | 4,890,000 |  |  |  |
Ending Balance |  | $ 2,139,000 | [25],[28],[30] | $ 4,890,000 | [22],[29] |
Investment, reference rate and spread |  | 2.00% | [1],[2],[3],[4],[25],[28],[30] | 2.00% | [6],[7],[9],[10],[22],[29] |
Investment, interest rate, paid in cash |  | 7.00% | [1],[2],[3],[4],[25],[28],[30] | 7.30% | [6],[7],[9],[10],[22],[29] |
Investment, Identifier [Axis]: B+T Group Acquisition, Inc.(S) – Preferred Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares | [16],[17],[24],[25],[28] | 6,130 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Ending Balance | [24],[25],[28] | $ 0 |  |  |  |
Investment, Identifier [Axis]: CHA Holdings, Inc. – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [18],[19],[20],[31] |  |  | $ 3,000,000 |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [18],[31] | 2,820,000 |  |  |  |
Ending Balance | [18],[31] |  |  | $ 2,820,000 |  |
Investment, reference rate and spread | [6],[7],[9],[10],[18],[31] |  |  | 9.00% |  |
Investment, interest rate, paid in cash | [6],[7],[9],[10],[18],[31] |  |  | 14.40% |  |
Investment, Identifier [Axis]: Cafe Zupas – Line of Credit |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 1,050,000 | [16],[17],[21] | $ 0 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 0 |  |  |  |
Ending Balance |  | 1,061,000 | [21] | 0 | [22] |
Line of credit facility, available |  | $ 700,000 | [1],[2],[3],[4],[21] | $ 1,500,000 | [6],[7],[9],[10],[22] |
Investment, reference rate and spread |  | 7.50% | [1],[2],[3],[4],[21] | 6.80% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 12.30% | [1],[2],[3],[4],[21] | 12.10% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: Café Zupas – Delayed Draw Term Loan |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 7,350,000 | [16],[17],[21] | $ 7,970,000 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 7,850,000 |  |  |  |
Ending Balance |  | 7,424,000 | [21] | 7,850,000 | [22] |
Line of credit facility, available |  | $ 3,150,000 | [1],[2],[3],[4],[21] | $ 2,070,000 | [6],[7],[9],[10],[22] |
Investment, reference rate and spread |  | 7.50% | [1],[2],[3],[4],[21] | 6.80% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 12.30% | [1],[2],[3],[4],[21] | 12.10% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: Café Zupas – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 26,250,000 | [16],[17],[21] | $ 23,460,000 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 23,108,000 |  |  |  |
Ending Balance |  | $ 26,513,000 | [21] | $ 23,108,000 | [22] |
Investment, reference rate and spread |  | 7.50% | [1],[2],[3],[4],[21] | 6.80% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 12.30% | [1],[2],[3],[4],[21] | 12.10% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: Canopy Safety Brands, LLC – Common Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 1,170,370 | [16],[17],[24],[25] | 1,170,370 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 2,404,000 |  |  |  |
Ending Balance |  | $ 2,959,000 | [24],[25] | $ 2,404,000 | [26],[27] |
Investment, Identifier [Axis]: Canopy Safety Brands, LLC – Preferred Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 500,000 | [16],[17],[24],[25] | 500,000 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 857,000 |  |  |  |
Ending Balance |  | $ 931,000 | [24],[25] | $ 857,000 | [26],[27] |
Investment, Identifier [Axis]: Canopy Safety Brands, LLC—Common Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 1,170,370 |  |  |  |
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 |  | 2,404,000 |  |  |  |
Gross Additions |  | 0 |  |  |  |
Gross Reductions |  | 0 |  |  |  |
Net Unrealized Appreciation (Depreciation) |  | 555,000 |  |  |  |
Ending Balance |  | $ 2,959,000 |  | 2,404,000 |  |
Investment, Identifier [Axis]: Canopy Safety Brands, LLC—Preferred Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 500,000 |  |  |  |
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 |  | 857,000 |  |  |  |
Gross Additions |  | 0 |  |  |  |
Gross Reductions |  | 0 |  |  |  |
Net Unrealized Appreciation (Depreciation) |  | 74,000 |  |  |  |
Ending Balance |  | 931,000 |  | 857,000 |  |
Investment, Identifier [Axis]: DKI Ventures, LLC – Line of Credit |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 350,000 | [16],[17],[25],[32] | 205,000 | [19],[20],[22],[33] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22],[33] | 113,000 |  |  |  |
Ending Balance |  | 159,000 | [25],[32] | 113,000 | [22],[33] |
Line of credit facility, available |  | $ 25,000 | [1],[2],[3],[4],[25],[32] | $ 170,000 | [6],[7],[9],[10],[22],[33] |
Investment, interest rate, paid in cash |  | 9.00% | [1],[2],[3],[4],[25],[32] | 9.00% | [6],[7],[9],[10],[22],[33] |
Investment, Identifier [Axis]: DKI Ventures, LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 5,915,000 | [16],[17],[25],[32] | $ 5,915,000 | [19],[20],[22],[33] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22],[33] | 3,253,000 |  |  |  |
Ending Balance |  | $ 2,684,000 | [25],[32] | $ 3,253,000 | [22],[33] |
Investment, interest rate, paid in cash |  | 9.00% | [1],[2],[3],[4],[25],[32] | 9.00% | [6],[7],[9],[10],[22],[33] |
Investment, Identifier [Axis]: Defiance Integrated Technologies, Inc. – Common Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 33,321 | [16],[17],[24],[25] | 33,321 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 3,948,000 |  |  |  |
Ending Balance |  | 2,949,000 | [24],[25] | $ 3,948,000 | [26],[27] |
Investment, Identifier [Axis]: Defiance Integrated Technologies, Inc. – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 8,547,000 | [16],[17],[25] | 7,425,000 | [19],[20],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [27] | 7,425,000 |  |  |  |
Ending Balance |  | $ 8,547,000 | [25] | $ 7,425,000 | [27] |
Investment, reference rate and spread |  | 9.60% | [1],[2],[3],[4],[25] | 9.60% | [6],[7],[9],[10],[27] |
Investment, interest rate, paid in cash |  | 14.40% | [1],[2],[3],[4],[25] | 14.90% | [6],[7],[9],[10],[27] |
Investment, Identifier [Axis]: Defiance Integrated Technologies, Inc.—Common Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 33,321 |  |  |  |
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 |  | 3,948,000 |  |  |  |
Gross Additions |  | 1,000 |  |  |  |
Gross Reductions |  | 0 |  |  |  |
Net Unrealized Appreciation (Depreciation) |  | (1,000,000) |  |  |  |
Ending Balance |  | 2,949,000 |  | $ 3,948,000 |  |
Investment, Identifier [Axis]: Defiance Integrated Technologies, Inc.—Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 8,547,000 |  |  |  |
Net Realized Gain (Loss) for Period |  | 0 |  |  |  |
Amount of Investment Income |  | 1,143,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance |  | 7,425,000 |  |  |  |
Gross Additions |  | 1,362,000 |  |  |  |
Gross Reductions |  | (240,000) |  |  |  |
Net Unrealized Appreciation (Depreciation) |  | 0 |  |  |  |
Ending Balance |  | 8,547,000 |  | 7,425,000 |  |
Investment, Identifier [Axis]: ENET Holdings, LLC – Line of Credit |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [16],[17],[21] | 0 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Ending Balance | [21] | 0 |  |  |  |
Line of credit facility, available | [1],[2],[3],[4],[21] | $ 2,500,000 |  |  |  |
Investment, reference rate and spread | [1],[2],[3],[4],[21] | 7.30% |  |  |  |
Investment, interest rate, paid in cash | [1],[2],[3],[4],[21] | 12.10% |  |  |  |
Investment, Identifier [Axis]: ENET Holdings, LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 22,289,000 | [16],[17],[21] | 22,289,000 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 21,397,000 |  |  |  |
Ending Balance |  | $ 21,973,000 | [21] | $ 21,397,000 | [22] |
Investment, reference rate and spread |  | 7.30% | [1],[2],[3],[4],[21] | 8.30% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 12.10% | [1],[2],[3],[4],[21] | 13.60% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. – Preferred Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 5,466 | [16],[17],[24],[25],[28] | 5,466 | [19],[20],[26],[27],[29] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27],[29] | $ 0 |  |  |  |
Ending Balance |  | 0 | [24],[25],[28] | $ 0 | [26],[27],[29] |
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 6,140,000 | [16],[17],[25],[28],[30] | 6,140,000 | [19],[20],[27],[29],[34] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [27],[29],[34] | 2,895,000 |  |  |  |
Ending Balance |  | $ 380,000 | [25],[28],[30] | $ 2,895,000 | [27],[29],[34] |
Investment, reference rate and spread |  | 5.50% | [1],[2],[3],[4],[25],[28],[30] | 5.50% | [6],[7],[9],[10],[27],[29],[34] |
Investment, interest rate, paid in cash |  | 10.30% | [1],[2],[3],[4],[25],[28],[30] | 10.80% | [6],[7],[9],[10],[27],[29],[34] |
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc.—Preferred Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 5,466 |  |  |  |
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 |  | 0 |  |  |  |
Gross Additions |  | 0 |  |  |  |
Gross Reductions |  | 0 |  |  |  |
Net Unrealized Appreciation (Depreciation) |  | 0 |  |  |  |
Ending Balance |  | 0 |  | $ 0 |  |
Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc.—Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 6,140,000 |  |  |  |
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 |  | 2,895,000 |  |  |  |
Gross Additions |  | 0 |  |  |  |
Gross Reductions |  | 0 |  |  |  |
Net Unrealized Appreciation (Depreciation) |  | (2,515,000) |  |  |  |
Ending Balance |  | 380,000 |  | 2,895,000 |  |
Investment, Identifier [Axis]: Eegee’s LLC – Delayed Draw Term Loan |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 3,145,000 | [16],[17],[21] | 3,000,000 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 2,865,000 |  |  |  |
Ending Balance |  | 2,380,000 | [21] | 2,865,000 | [22] |
Line of credit facility, available |  | $ 0 | [1],[2],[3],[4],[21] | $ 4,500,000 | [6],[7],[9],[10],[22] |
Investment, reference rate and spread |  | 7.80% | [1],[2],[3],[4],[21] | 7.80% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 8.00% | [1],[2],[3],[4],[21] | 13.10% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: Eegee’s LLC – Line of Credit |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 1,500,000 | [16],[17],[21] | $ 0 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 0 |  |  |  |
Ending Balance |  | 1,135,000 | [21] | 0 | [22] |
Line of credit facility, available |  | $ 500,000 | [1],[2],[3],[4],[21] | $ 1,000,000 | [6],[7],[9],[10],[22] |
Investment, reference rate and spread |  | 7.80% | [1],[2],[3],[4],[21] | 7.80% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 12.60% | [1],[2],[3],[4],[21] | 13.10% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: Eegee’s LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 17,824,000 | [16],[17],[21] | $ 17,000,000 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 16,235,000 |  |  |  |
Ending Balance |  | $ 13,486,000 | [21] | $ 16,235,000 | [22] |
Investment, reference rate and spread |  | 7.80% | [1],[2],[3],[4],[21] | 7.80% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 8.00% | [1],[2],[3],[4],[21] | 13.10% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC – Preferred Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 3,840,000 | [16],[17],[24],[25] | 3,840,000 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 4,265,000 |  |  |  |
Ending Balance |  | $ 3,168,000 | [24],[25] | $ 4,265,000 | [26],[27] |
Investment, Identifier [Axis]: Encore Dredging Holdings, LLC—Preferred Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 3,840,000 |  |  |  |
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 |  | 4,265,000 |  |  |  |
Gross Additions |  | 0 |  |  |  |
Gross Reductions |  | 0 |  |  |  |
Net Unrealized Appreciation (Depreciation) |  | (1,097,000) |  |  |  |
Ending Balance |  | $ 3,168,000 |  | $ 4,265,000 |  |
Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Common Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 6,000 | [16],[17],[24],[25] | 6,000 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 0 |  |  |  |
Ending Balance |  | 0 | [24],[25] | $ 0 | [26],[27] |
Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Line of Credit |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 0 | [16],[17],[25] | 0 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 0 |  |  |  |
Ending Balance |  | 0 | [25] | 0 | [22] |
Line of credit facility, available |  | $ 3,000,000 | [1],[2],[3],[4],[25] | $ 3,000,000 | [6],[7],[9],[10],[22] |
Investment, reference rate and spread |  | 8.30% | [1],[2],[3],[4],[25] | 8.30% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 13.10% | [1],[2],[3],[4],[25] | 13.60% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [16],[17],[25] | $ 22,230,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Ending Balance | [25] | $ 19,283,000 |  |  |  |
Investment, reference rate and spread | [1],[2],[3],[4],[25] | 8.30% |  |  |  |
Investment, interest rate, paid in cash | [1],[2],[3],[4],[25] | 10.00% |  |  |  |
Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [19],[20],[22] |  |  | $ 21,500,000 |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | $ 19,726,000 |  |  |  |
Ending Balance | [22] |  |  | $ 19,726,000 |  |
Investment, reference rate and spread | [6],[7],[9],[10],[22] |  |  | 8.30% |  |
Investment, interest rate, paid in cash | [6],[7],[9],[10],[22] |  |  | 13.60% |  |
Investment, Identifier [Axis]: FES Resources Holdings LLC – Common Equity Units |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 6,233 | [16],[17],[24],[25] | 6,233 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 0 |  |  |  |
Ending Balance |  | $ 0 | [24],[25] | $ 0 | [26],[27] |
Investment, Identifier [Axis]: FES Resources Holdings LLC – Preferred Equity Units |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 6,350 | [16],[17],[24],[25] | 6,350 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 4,508,000 |  |  |  |
Ending Balance |  | 0 | [24],[25] | $ 4,508,000 | [26],[27] |
Investment, Identifier [Axis]: FES Resources Holdings LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [16],[17],[25],[32] | 325,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Ending Balance | [25],[32] | $ 163,000 |  |  |  |
Investment, interest rate, paid in cash | [1],[2],[3],[4],[25],[32] | 4.50% |  |  |  |
Investment, Identifier [Axis]: Fix-It Group, LLC – Delayed Draw Term Loan |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 6,781,000 | [16],[17],[21] | 6,911,000 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 6,894,000 |  |  |  |
Ending Balance |  | 6,781,000 | [21] | 6,894,000 | [22] |
Line of credit facility, available |  | $ 0 | [1],[2],[3],[4],[21] | $ 0 | [6],[7],[9],[10],[22] |
Investment, reference rate and spread |  | 7.10% | [1],[2],[3],[4],[21] | 8.10% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 11.90% | [1],[2],[3],[4],[21] | 13.40% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: Fix-It Group, LLC – Line of Credit |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 0 | [16],[17],[21] | $ 500,000 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 499,000 |  |  |  |
Ending Balance |  | 0 | [21] | 499,000 | [22] |
Line of credit facility, available |  | $ 3,000,000 | [1],[2],[3],[4],[21] | $ 2,500,000 | [6],[7],[9],[10],[22] |
Investment, reference rate and spread |  | 7.10% | [1],[2],[3],[4],[21] | 8.10% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 11.90% | [1],[2],[3],[4],[21] | 13.40% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: Fix-It Group, LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 13,324,000 | [16],[17],[21] | $ 12,200,000 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 12,170,000 |  |  |  |
Ending Balance |  | $ 13,457,000 | [21] | $ 12,170,000 | [22] |
Investment, reference rate and spread |  | 7.10% | [1],[2],[3],[4],[21] | 8.10% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 11.90% | [1],[2],[3],[4],[21] | 13.40% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: Frontier Financial Group Inc. – Convertible Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 198,000 | [16],[17],[25],[32] | $ 198,000 | [19],[20],[27],[33] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [27],[33] | 24,000 |  |  |  |
Ending Balance |  | $ 32,000 | [25],[32] | $ 24,000 | [27],[33] |
Investment, interest rate, paid in cash |  | 6.00% | [1],[2],[3],[4],[25],[32] | 6.00% | [6],[7],[9],[10],[27],[33] |
Investment, Identifier [Axis]: Frontier Financial Group Inc. – Preferred Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 766 | [16],[17],[24],[25] | 766 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 0 |  |  |  |
Ending Balance |  | $ 0 | [24],[25] | $ 0 | [26],[27] |
Investment, Identifier [Axis]: Frontier Financial Group Inc. – Preferred Stock Warrant |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 168 | [16],[17],[24],[25] | 168 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 0 |  |  |  |
Ending Balance |  | 0 | [24],[25] | $ 0 | [26],[27] |
Investment, Identifier [Axis]: Funko Acquisition Holdings, LLC(S) – Common Units |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares | [19],[20],[26],[29],[35] |  |  | 4,239 |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[29],[35] | $ 22,000 |  |  |  |
Ending Balance | [26],[29],[35] |  |  | $ 22,000 |  |
Investment, Identifier [Axis]: GFRC 360, LLC – Common Stock Warrants |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Units |  | 45.00% | [16],[17],[24],[25] | 45.00% | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 0 |  |  |  |
Ending Balance |  | 0 | [24],[25] | $ 0 | [26],[27] |
Investment, Identifier [Axis]: GFRC 360, LLC – Line of Credit |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 1,355,000 | [16],[17],[21] | 1,275,000 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 1,205,000 |  |  |  |
Ending Balance |  | 1,355,000 | [21] | 1,205,000 | [22] |
Line of credit facility, available |  | $ 95,000 | [1],[2],[3],[4],[21] | $ 175,000 | [6],[7],[9],[10],[22] |
Investment, reference rate and spread |  | 8.00% | [1],[2],[3],[4],[21] | 8.00% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 12.80% | [1],[2],[3],[4],[21] | 13.30% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: GFRC 360, LLC – Preferred Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 1,000 | [16],[17],[24],[25] | 1,000 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 253,000 |  |  |  |
Ending Balance |  | 0 | [24],[25] | $ 253,000 | [26],[27] |
Investment, Identifier [Axis]: GFRC 360, LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 1,000,000 | [16],[17],[21] | 1,000,000 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 945,000 |  |  |  |
Ending Balance |  | $ 1,000,000 | [21] | $ 945,000 | [22] |
Investment, reference rate and spread |  | 8.00% | [1],[2],[3],[4],[21] | 8.00% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 12.80% | [1],[2],[3],[4],[21] | 13.30% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: GSM MidCo LLC – Common Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 767 | [16],[17],[24],[25] | 767 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 1,562,000 |  |  |  |
Ending Balance |  | 1,583,000 | [24],[25] | $ 1,562,000 | [26],[27] |
Investment, Identifier [Axis]: Giving Home Health Care, LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [19],[20],[22],[33] |  |  | 28,800,000 |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22],[33] | $ 28,800,000 |  |  |  |
Ending Balance | [22],[33] |  |  | $ 28,800,000 |  |
Investment, interest rate, paid in cash | [6],[7],[9],[10],[22],[33] |  |  | 12.50% |  |
Investment, Identifier [Axis]: Giving Home Health Care, LLC – Warrant |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 10,667 | [16],[17],[24],[25] | 10,667 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 2,794,000 |  |  |  |
Ending Balance |  | 3,995,000 | [24],[25] | $ 2,794,000 | [26],[27] |
Investment, Identifier [Axis]: Gray Matter Systems, LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [19],[20],[22],[33] |  |  | 13,645,000 |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22],[33] | 13,645,000 |  |  |  |
Ending Balance | [22],[33] |  |  | $ 13,645,000 |  |
Investment, interest rate, paid in cash | [6],[7],[9],[10],[22],[33] |  |  | 12.00% |  |
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Line of Credit |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 1,727,000 | [16],[17],[21],[36] | $ 1,359,000 | [19],[20],[22],[31] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22],[31] | 1,347,000 |  |  |  |
Ending Balance |  | 1,677,000 | [21],[36] | 1,347,000 | [22],[31] |
Line of credit facility, available |  | $ 110,000 | [1],[2],[3],[4],[21],[36] | $ 478,000 | [6],[7],[9],[10],[22],[31] |
Investment, reference rate and spread |  | 8.00% | [1],[2],[3],[4],[21],[36] | 8.00% | [6],[7],[9],[10],[22],[31] |
Investment, interest rate, paid in cash |  | 12.80% | [1],[2],[3],[4],[21],[36] | 13.40% | [6],[7],[9],[10],[22],[31] |
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Preferred Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 1,329,054 | [16],[17],[24],[25] | 1,329,054 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 3,451,000 |  |  |  |
Ending Balance |  | 1,047,000 | [24],[25] | $ 3,451,000 | [26],[27] |
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Term Debt 1 |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 15,852,000 | [16],[17],[21],[36] | 16,013,000 | [19],[20],[22],[31] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22],[31] | 15,872,000 |  |  |  |
Ending Balance |  | $ 15,399,000 | [21],[36] | $ 15,872,000 | [22],[31] |
Investment, reference rate and spread |  | 8.00% | [1],[2],[3],[4],[21],[36] | 8.00% | [6],[7],[9],[10],[22],[31] |
Investment, interest rate, paid in cash |  | 12.80% | [1],[2],[3],[4],[21],[36] | 13.40% | [6],[7],[9],[10],[22],[31] |
Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Term Debt 2 |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 3,193,000 | [16],[17],[21],[36] | $ 3,225,000 | [19],[20],[22],[31] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22],[31] | 3,197,000 |  |  |  |
Ending Balance |  | $ 3,102,000 | [21],[36] | $ 3,197,000 | [22],[31] |
Investment, reference rate and spread |  | 8.00% | [1],[2],[3],[4],[21],[36] | 8.00% | [6],[7],[9],[10],[22],[31] |
Investment, interest rate, paid in cash |  | 12.80% | [1],[2],[3],[4],[21],[36] | 13.40% | [6],[7],[9],[10],[22],[31] |
Investment, Identifier [Axis]: Imperative Holdings Corporation – Preferred Equity Units |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 972,569 | [16],[17],[24],[25] | 972,569 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 2,318,000 |  |  |  |
Ending Balance |  | 2,275,000 | [24],[25] | $ 2,318,000 | [26],[27] |
Investment, Identifier [Axis]: Imperative Holdings Corporation – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 18,015,000 | [16],[17],[21] | 21,015,000 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 20,858,000 |  |  |  |
Ending Balance |  | $ 18,015,000 | [21] | $ 20,858,000 | [22] |
Investment, reference rate and spread |  | 9.80% | [1],[2],[3],[4],[21] | 9.80% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 14.60% | [1],[2],[3],[4],[21] | 15.10% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: Leadpoint Business Services, LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 25,500,000 | [16],[17],[21] | $ 13,500,000 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 13,399,000 |  |  |  |
Ending Balance |  | $ 26,010,000 | [21] | $ 13,399,000 | [22] |
Investment, reference rate and spread |  | 8.50% | [1],[2],[3],[4],[21] | 8.50% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 13.30% | [1],[2],[3],[4],[21] | 13.80% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: Leeds Novamark Capital I, L.P. – Limited Partnership Interest |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Units |  | 3.50% | [16],[17],[24],[37],[38] | 3.50% | [19],[20],[26],[39],[40] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[39],[40] | $ 231,000 |  |  |  |
Ending Balance |  | 38,000 | [24],[37],[38] | $ 231,000 | [26],[39],[40] |
Line of credit facility, available |  | 843,000 | [1],[2],[3],[4],[24],[37],[38] | 843,000 | [6],[7],[9],[10],[26],[39],[40] |
Investment, Identifier [Axis]: Lonestar EMS, LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 4,200,000 | [16],[17],[25],[32] | 3,927,000 | [19],[20],[27],[33] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [27],[33] | 3,927,000 |  |  |  |
Ending Balance |  | $ 4,200,000 | [25],[32] | 3,927,000 | [27],[33] |
Investment, interest rate, paid in cash | [1],[2],[3],[4],[25],[32] | 12.00% |  |  |  |
Investment, Identifier [Axis]: Lonestar EMS, LLC - Common Units |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Units |  | 100.00% |  |  |  |
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 |  | 0 |  |  |  |
Gross Additions |  | 0 |  |  |  |
Gross Reductions |  | 0 |  |  |  |
Net Unrealized Appreciation (Depreciation) |  | 8,214,000 |  |  |  |
Ending Balance |  | $ 8,214,000 |  | $ 0 |  |
Investment, Identifier [Axis]: Lonestar EMS, LLC – Common Units |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Units |  | 100.00% | [16],[17],[24],[25] | 100.00% | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 0 |  |  |  |
Ending Balance |  | 8,214,000 | [24],[25] | $ 0 | [26],[27] |
Investment, Identifier [Axis]: Lonestar EMS, LLC — Delayed Draw Term Loan |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 0 |  |  |  |
Net Realized Gain (Loss) for Period |  | 0 |  |  |  |
Amount of Investment Income |  | 8,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance |  | 0 |  |  |  |
Gross Additions |  | 100,000 |  |  |  |
Gross Reductions |  | (100,000) |  |  |  |
Net Unrealized Appreciation (Depreciation) |  | 0 |  |  |  |
Ending Balance |  | 0 |  | 0 |  |
Investment, Identifier [Axis]: Lonestar EMS, LLC—Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 4,200,000 |  |  |  |
Net Realized Gain (Loss) for Period |  | 0 |  |  |  |
Amount of Investment Income |  | 394,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance |  | 3,927,000 |  |  |  |
Gross Additions |  | 203,000 |  |  |  |
Gross Reductions |  | 0 |  |  |  |
Net Unrealized Appreciation (Depreciation) |  | 70,000 |  |  |  |
Ending Balance |  | $ 4,200,000 |  | $ 3,927,000 |  |
Investment, Identifier [Axis]: MCG Energy Solutions, LLC – Preferred Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 7,000,000 | [16],[17],[24],[25] | 7,000,000 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 8,904,000 |  |  |  |
Ending Balance |  | 9,954,000 | [24],[25] | $ 8,904,000 | [26],[27] |
Investment, Identifier [Axis]: MCG Energy Solutions, LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 20,290,000 | [16],[17],[25] | 20,146,000 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 17,628,000 |  |  |  |
Ending Balance |  | $ 20,290,000 | [25] | $ 17,628,000 | [22] |
Investment, reference rate and spread |  | 7.60% | [1],[2],[3],[4],[25] | 7.60% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 12.40% | [1],[2],[3],[4],[25] | 12.90% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: NeoGraf Solutions LLC – Common Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 2,000,000 | [16],[17],[24],[25] | 2,000,000 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 0 |  |  |  |
Ending Balance |  | 859,000 | [24],[25] | $ 0 | [26],[27] |
Investment, Identifier [Axis]: NeoGraf Solutions LLC – Line of Credit |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [16],[17],[21] | 0 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Ending Balance | [21] | 0 |  |  |  |
Line of credit facility, available |  | $ 4,500,000 | [1],[2],[3],[4],[21] | $ 4,500,000 | [6],[7],[9],[10],[22] |
Investment, reference rate and spread |  | 7.00% | [1],[2],[3],[4],[21] | 7.00% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 11.00% | [1],[2],[3],[4],[21] | 11.00% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: NeoGraf Solutions LLC – Line of Credit, $4,500 available |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [19],[20],[22] |  |  | $ 0 |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | $ 0 |  |  |  |
Ending Balance | [22] |  |  | 0 |  |
Investment, Identifier [Axis]: NeoGraf Solutions LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [16],[17],[21] | 27,524,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Ending Balance | [21] | $ 26,350,000 |  |  |  |
Investment, reference rate and spread | [1],[2],[3],[4],[21] | 7.00% |  |  |  |
Investment, interest rate, paid in cash | [1],[2],[3],[4],[21] | 11.00% |  |  |  |
Investment, Identifier [Axis]: NeoGraf Solutions LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [19],[20],[22] |  |  | 27,154,000 |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | $ 26,000,000 |  |  |  |
Ending Balance | [22] |  |  | $ 26,000,000 |  |
Investment, reference rate and spread | [6],[7],[9],[10],[22] |  |  | 7.00% |  |
Investment, interest rate, paid in cash | [6],[7],[9],[10],[22] |  |  | 11.00% |  |
Investment, Identifier [Axis]: OCI, LLC – Common Units |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 306 | [16],[17],[24],[25] | 306 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 0 |  |  |  |
Ending Balance |  | 0 | [24],[25] | $ 0 | [26],[27] |
Investment, Identifier [Axis]: OCI, LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [19],[20],[22] |  |  | 20,000,000 |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 19,800,000 |  |  |  |
Ending Balance | [22] |  |  | $ 19,800,000 |  |
Investment, reference rate and spread | [6],[7],[9],[10],[22] |  |  | 7.50% |  |
Investment, interest rate, paid in cash | [6],[7],[9],[10],[22] |  |  | 12.80% |  |
Investment, Identifier [Axis]: OCI, LLC – Term Debt 1 |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [16],[17],[21] | 18,500,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Ending Balance | [21] | $ 18,685,000 |  |  |  |
Investment, reference rate and spread | [1],[2],[3],[4],[21] | 7.50% |  |  |  |
Investment, interest rate, paid in cash | [1],[2],[3],[4],[21] | 12.30% |  |  |  |
Investment, Identifier [Axis]: OCI, LLC – Term Debt 2 |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 2,159,000 | [16],[17],[21],[32] | $ 2,012,000 | [19],[20],[22],[33] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22],[33] | 1,992,000 |  |  |  |
Ending Balance |  | $ 2,303,000 | [21],[32] | $ 1,992,000 | [22],[33] |
Investment, interest rate, paid in cash |  | 7.00% | [1],[2],[3],[4],[21],[32] | 7.00% | [6],[7],[9],[10],[22],[33] |
Investment, Identifier [Axis]: Ohio Armor Holdings, LLC – Common Equity |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 100 | [16],[17],[24],[25] | 100 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 680,000 |  |  |  |
Ending Balance |  | 1,086,000 | [24],[25] | $ 680,000 | [26],[27] |
Investment, Identifier [Axis]: Ohio Armor Holdings, LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [16],[17],[21] | 16,563,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Ending Balance | [21] | $ 16,563,000 |  |  |  |
Investment, reference rate and spread | [1],[2],[3],[4],[21] | 8.00% |  |  |  |
Investment, interest rate, paid in cash | [1],[2],[3],[4],[21] | 12.80% |  |  |  |
Investment, Identifier [Axis]: Ohio Armor Holdings, LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [19],[20],[22] |  |  | 17,738,000 |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | $ 17,294,000 |  |  |  |
Ending Balance | [22] |  |  | $ 17,294,000 |  |
Investment, reference rate and spread | [6],[7],[9],[10],[22] |  |  | 8.00% |  |
Investment, interest rate, paid in cash | [6],[7],[9],[10],[22] |  |  | 13.30% |  |
Investment, Identifier [Axis]: PIC 360, LLC – Common Equity Units |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares | [19],[20],[26],[27] |  |  | 750 |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 284,000 |  |  |  |
Ending Balance | [26],[27] |  |  | $ 284,000 |  |
Investment, Identifier [Axis]: PIC 360, LLC—Common Equity Units |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 0 |  |  |  |
Net Realized Gain (Loss) for Period |  | $ 259,000 |  |  |  |
Amount of Investment Income |  | 0 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance |  | 284,000 |  |  |  |
Gross Additions |  | 0 |  |  |  |
Gross Reductions |  | (1,000) |  |  |  |
Net Unrealized Appreciation (Depreciation) |  | (283,000) |  |  |  |
Ending Balance |  | 0 |  | 284,000 |  |
Investment, Identifier [Axis]: Pansophic Learning, Ltd. – Term Debt 1 |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [19],[20],[22],[31] |  |  | 28,000,000 |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22],[31] | 27,965,000 |  |  |  |
Ending Balance | [22],[31] |  |  | $ 27,965,000 |  |
Investment, reference rate and spread | [6],[7],[9],[10],[22],[31] |  |  | 7.50% |  |
Investment, interest rate, paid in cash | [6],[7],[9],[10],[22],[31] |  |  | 12.90% |  |
Investment, Identifier [Axis]: Pansophic Learning, Ltd. – Term Debt 2 |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [19],[20],[22],[31] |  |  | $ 5,000,000 |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22],[31] | 4,994,000 |  |  |  |
Ending Balance | [22],[31] |  |  | $ 4,994,000 |  |
Investment, reference rate and spread | [6],[7],[9],[10],[22],[31] |  |  | 7.50% |  |
Investment, interest rate, paid in cash | [6],[7],[9],[10],[22],[31] |  |  | 12.90% |  |
Investment, Identifier [Axis]: Perimeter Solutions Group – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [16],[17],[21],[23] | 15,000,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Ending Balance | [21],[23] | $ 15,000,000 |  |  |  |
Investment, reference rate and spread | [1],[2],[3],[4],[21],[23] | 8.50% |  |  |  |
Investment, interest rate, paid in cash | [1],[2],[3],[4],[21],[23] | 13.30% |  |  |  |
Investment, Identifier [Axis]: Quality Environmental Midco, Inc. – Line of Credit |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [16],[17],[21],[32] | $ 0 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Ending Balance | [21],[32] | 0 |  |  |  |
Line of credit facility, available | [1],[2],[3],[4],[21],[32] | $ 3,000,000 |  |  |  |
Investment, interest rate, paid in cash | [1],[2],[3],[4],[21],[32] | 12.00% |  |  |  |
Investment, Identifier [Axis]: Quality Environmental Midco, Inc. – Preferred Equity |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares | [16],[17],[24],[25] | 3,000,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Ending Balance | [24],[25] | $ 3,582,000 |  |  |  |
Investment, Identifier [Axis]: Quality Environmental Midco, Inc. – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [16],[17],[21],[32] | 13,000,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Ending Balance | [21],[32] | $ 13,390,000 |  |  |  |
Investment, interest rate, paid in cash | [1],[2],[3],[4],[21],[32] | 12.00% |  |  |  |
Investment, Identifier [Axis]: RPM Freight Systems, LLC – Delayed Draw Term Loan |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [16],[17],[21] | $ 0 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Ending Balance | [21] | 0 |  |  |  |
Line of credit facility, available | [1],[2],[3],[4],[21] | $ 5,000,000 |  |  |  |
Investment, reference rate and spread | [1],[2],[3],[4],[21] | 7.70% |  |  |  |
Investment, interest rate, paid in cash | [1],[2],[3],[4],[21] | 12.50% |  |  |  |
Investment, Identifier [Axis]: RPM Freight Systems, LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [16],[17],[21] | $ 20,000,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Ending Balance | [21] | $ 20,200,000 |  |  |  |
Investment, reference rate and spread | [1],[2],[3],[4],[21] | 7.70% |  |  |  |
Investment, interest rate, paid in cash | [1],[2],[3],[4],[21] | 12.50% |  |  |  |
Investment, Identifier [Axis]: Salt & Straw, LLC – Common Warrant |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Units |  | 0.40% | [16],[17],[24],[25] | 0.40% | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 31,000 |  |  |  |
Ending Balance |  | 47,000 | [24],[25] | $ 31,000 | [26],[27] |
Investment, Identifier [Axis]: Salt & Straw, LLC – Delayed Draw Term Loan |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 10,850,000 | [16],[17],[21] | 10,200,000 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 9,715,000 |  |  |  |
Ending Balance |  | 10,850,000 | [21] | 9,715,000 | [22] |
Line of credit facility, available |  | $ 3,500,000 | [1],[2],[3],[4],[21] | $ 1,300,000 | [6],[7],[9],[10],[22] |
Investment, reference rate and spread |  | 9.10% | [1],[2],[3],[4],[21] | 9.10% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 13.90% | [1],[2],[3],[4],[21] | 14.40% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: Salt & Straw, LLC – Line of Credit |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 0 | [16],[17],[21] | $ 0 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 0 |  |  |  |
Ending Balance |  | 0 | [21] | 0 | [22] |
Line of credit facility, available |  | $ 2,000,000 | [1],[2],[3],[4],[21] | $ 2,000,000 | [6],[7],[9],[10],[22] |
Investment, reference rate and spread |  | 9.10% | [1],[2],[3],[4],[21] | 9.10% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 13.90% | [1],[2],[3],[4],[21] | 14.40% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: Salt & Straw, LLC – Preferred Equity |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares | [16],[17],[24],[25] | 7,000,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Ending Balance | [24],[25] | $ 9,450,000 |  |  |  |
Investment, Identifier [Axis]: Salvo Technologies, Inc. – Preferred Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares | [19],[20],[26],[27] |  |  | 2,500 |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | 1,225,000 |  |  |  |
Ending Balance | [26],[27] |  |  | $ 1,225,000 |  |
Investment, Identifier [Axis]: Salvo Technologies, Inc. – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [19],[20],[22] |  |  | 11,768,000 |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | $ 10,900,000 |  |  |  |
Ending Balance | [22] |  |  | $ 10,900,000 |  |
Investment, reference rate and spread | [6],[7],[9],[10],[22] |  |  | 9.50% |  |
Investment, interest rate, paid in cash | [6],[7],[9],[10],[22] |  |  | 14.80% |  |
Investment, Identifier [Axis]: Sea Link International IRB, Inc. – Preferred Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 98,039 | [16],[17],[24],[25] | 98,039 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 183,000 |  |  |  |
Ending Balance |  | 220,000 | [24],[25] | $ 183,000 | [26],[27] |
Investment, Identifier [Axis]: Sea Link International IRB, Inc. – Term Debt 1 |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 12,331,000 | [16],[17],[21],[32] | 12,083,000 | [19],[20],[22],[33] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22],[33] | 11,675,000 |  |  |  |
Ending Balance |  | $ 12,331,000 | [21],[32] | $ 11,675,000 | [22],[33] |
Investment, interest rate, paid in cash |  | 11.30% | [1],[2],[3],[4],[21],[32] | 11.30% | [6],[7],[9],[10],[22],[33] |
Investment, Identifier [Axis]: Sea Link International IRB, Inc. – Term Debt 2 |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 4,079,000 | [16],[17],[21],[32] | $ 4,000,000 | [19],[20],[22],[33] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22],[33] | 4,000,000 |  |  |  |
Ending Balance |  | $ 4,079,000 | [21],[32] | $ 4,000,000 | [22],[33] |
Investment, interest rate, paid in cash |  | 12.00% | [1],[2],[3],[4],[21],[32] | 12.00% | [6],[7],[9],[10],[22],[33] |
Investment, Identifier [Axis]: Sea Link International IRB, Inc.– Common Equity Units |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 823,333 | [16],[17],[24],[25] | 823,333 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 340,000 |  |  |  |
Ending Balance |  | $ 160,000 | [24],[25] | $ 340,000 | [26],[27] |
Investment, Identifier [Axis]: Sokol & Company Holdings, LLC – Common Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 1,500,000 | [16],[17],[24],[25] | 1,500,000 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 1,612,000 |  |  |  |
Ending Balance |  | 2,727,000 | [24],[25] | $ 1,612,000 | [26],[27] |
Investment, Identifier [Axis]: Sokol & Company Holdings, LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 8,500,000 | [16],[17],[21] | 13,500,000 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 13,095,000 |  |  |  |
Ending Balance |  | $ 8,500,000 | [21] | $ 13,095,000 | [22] |
Investment, reference rate and spread |  | 6.80% | [1],[2],[3],[4],[21] | 7.00% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 11.60% | [1],[2],[3],[4],[21] | 12.30% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: SpaceCo Holdings, LLC – Line of Credit |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 2,000,000 | [16],[17],[21],[36] | $ 1,450,000 | [19],[20],[22],[31] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22],[31] | 1,434,000 |  |  |  |
Ending Balance |  | 2,000,000 | [21],[36] | 1,434,000 | [22],[31] |
Line of credit facility, available |  | $ 0 | [1],[2],[3],[4],[21],[36] | $ 550,000 | [6],[7],[9],[10],[22] |
Investment, reference rate and spread |  | 6.40% | [1],[2],[3],[4],[21],[36] | 7.20% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 11.00% | [1],[2],[3],[4],[21],[36] | 12.50% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: SpaceCo Holdings, LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 42,757,000 | [16],[17],[21],[36] | $ 30,284,000 | [19],[20],[22],[31] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22],[31] | 29,944,000 |  |  |  |
Ending Balance |  | $ 42,757,000 | [21],[36] | $ 29,944,000 | [22],[31] |
Investment, reference rate and spread |  | 6.40% | [1],[2],[3],[4],[21],[36] | 7.20% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 11.00% | [1],[2],[3],[4],[21],[36] | 12.50% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: Springfield, Inc. – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 30,000,000 | [16],[17],[21] | $ 30,000,000 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 29,850,000 |  |  |  |
Ending Balance |  | $ 30,000,000 | [21] | $ 29,850,000 | [22] |
Investment, reference rate and spread |  | 11.10% | [1],[2],[3],[4],[21] | 10.10% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 15.90% | [1],[2],[3],[4],[21] | 15.40% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: TNCP Intermediate HoldCo, LLC – Common Equity Units |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 790,000 | [16],[17],[24],[25] | 790,000 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 3,073,000 |  |  |  |
Ending Balance |  | 4,312,000 | [24],[25] | $ 3,073,000 | [26],[27] |
Investment, Identifier [Axis]: TNCP Intermediate HoldCo, LLC – Line of Credit |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 0 | [16],[17],[25],[32] | 900,000 | [19],[20],[27],[33] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [27],[33] | 900,000 |  |  |  |
Ending Balance |  | 0 | [25],[32] | 900,000 | [27],[33] |
Line of credit facility, available | [6],[7],[9],[10],[27],[33] |  |  | $ 1,100,000 |  |
Investment, interest rate, paid in cash | [6],[7],[9],[10],[27],[33] |  |  | 8.00% |  |
Investment, Identifier [Axis]: TNCP Intermediate HoldCo, LLC—-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 |  | 68,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance |  | 900,000 |  |  |  |
Gross Additions |  | 0 |  |  |  |
Gross Reductions |  | (900,000) |  |  |  |
Net Unrealized Appreciation (Depreciation) |  | 0 |  |  |  |
Ending Balance |  | 0 |  | $ 900,000 |  |
Line of credit facility, available | [1],[2],[3],[4],[25],[32] | $ 2,000,000 |  |  |  |
Investment, interest rate, paid in cash | [1],[2],[3],[4],[25],[32] | 11.00% |  |  |  |
Investment, Identifier [Axis]: TNCP Intermediate HoldCo, LLC—Common Equity Units |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 790,000 |  |  |  |
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 |  | 3,073,000 |  |  |  |
Gross Additions |  | 0 |  |  |  |
Gross Reductions |  | 0 |  |  |  |
Net Unrealized Appreciation (Depreciation) |  | 1,239,000 |  |  |  |
Ending Balance |  | 4,312,000 |  | 3,073,000 |  |
Investment, Identifier [Axis]: Tailwind Smith Cooper Intermediate Corporation – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [18],[19],[20],[31] |  |  | 5,000,000 |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [18],[31] | $ 4,294,000 |  |  |  |
Ending Balance | [18],[31] |  |  | $ 4,294,000 |  |
Investment, reference rate and spread | [6],[7],[9],[10],[18],[31] |  |  | 9.00% |  |
Investment, interest rate, paid in cash | [6],[7],[9],[10],[18],[31] |  |  | 14.40% |  |
Investment, Identifier [Axis]: Technical Resource Management, LLC – Common Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 2,000,000 | [16],[17],[24],[25] | 2,000,000 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 1,415,000 |  |  |  |
Ending Balance |  | 34,000 | [24],[25] | $ 1,415,000 | [26],[27] |
Investment, Identifier [Axis]: Technical Resource Management, LLC – Delayed Draw Term Loan |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [19],[20],[22] |  |  | 0 |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 0 |  |  |  |
Ending Balance | [22] |  |  | 0 |  |
Line of credit facility, available | [6],[7],[9],[10],[22] |  |  | $ 2,500,000 |  |
Investment, reference rate and spread | [6],[7],[9],[10],[22] |  |  | 8.00% |  |
Investment, interest rate, paid in cash | [6],[7],[9],[10],[22] |  |  | 13.30% |  |
Investment, Identifier [Axis]: Technical Resource Management, LLC – Line of Credit |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 2,000,000 | [16],[17],[21] | $ 2,000,000 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 1,970,000 |  |  |  |
Ending Balance |  | 2,008,000 | [21] | 1,970,000 | [22] |
Line of credit facility, available |  | $ 1,000,000 | [1],[2],[3],[4],[21] | $ 1,000,000 | [6],[7],[9],[10],[22] |
Investment, reference rate and spread |  | 8.00% | [1],[2],[3],[4],[21] | 8.00% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 12.80% | [1],[2],[3],[4],[21] | 13.30% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: Technical Resource Management, LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 23,234,000 | [16],[17],[21] | $ 23,000,000 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 22,655,000 |  |  |  |
Ending Balance |  | $ 23,327,000 | [21] | $ 22,655,000 | [22] |
Investment, reference rate and spread |  | 8.00% | [1],[2],[3],[4],[21] | 8.00% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 12.80% | [1],[2],[3],[4],[21] | 13.30% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: Torrent Photonics Holdco LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [16],[17],[21] | $ 12,149,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Ending Balance | [21] | $ 12,265,000 |  |  |  |
Investment, reference rate and spread | [1],[2],[3],[4],[21] | 9.50% |  |  |  |
Investment, interest rate, paid in cash | [1],[2],[3],[4],[21] | 14.30% |  |  |  |
Investment, Identifier [Axis]: Torrent Photonics Holdco LLC – Preferred Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares | [16],[17],[24],[25] | 2,650 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Ending Balance | [24],[25] | $ 552,000 |  |  |  |
Investment, Identifier [Axis]: Total Access Elevator, LLC – Common Equity |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares | [16],[17],[24],[25] | 750,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Ending Balance | [24],[25] | $ 1,234,000 |  |  |  |
Investment, Identifier [Axis]: Total Access Elevator, LLC – Delayed Draw Term Loan |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [16],[17],[21] | 0 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Ending Balance | [21] | 0 |  |  |  |
Line of credit facility, available | [1],[2],[3],[4],[21] | $ 2,500,000 |  |  |  |
Investment, reference rate and spread | [1],[2],[3],[4],[21] | 6.90% |  |  |  |
Investment, interest rate, paid in cash | [1],[2],[3],[4],[21] | 11.70% |  |  |  |
Investment, Identifier [Axis]: Total Access Elevator, LLC – Line of Credit |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [16],[17],[21] | $ 0 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Ending Balance | [21] | 0 |  |  |  |
Line of credit facility, available | [1],[2],[3],[4],[21] | $ 3,000,000 |  |  |  |
Investment, reference rate and spread | [1],[2],[3],[4],[21] | 6.90% |  |  |  |
Investment, interest rate, paid in cash | [1],[2],[3],[4],[21] | 11.70% |  |  |  |
Investment, Identifier [Axis]: Total Access Elevator, LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [16],[17],[21] | $ 6,500,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Ending Balance | [21] | $ 6,695,000 |  |  |  |
Investment, reference rate and spread | [1],[2],[3],[4],[21] | 6.90% |  |  |  |
Investment, interest rate, paid in cash | [1],[2],[3],[4],[21] | 11.70% |  |  |  |
Investment, Identifier [Axis]: Total Safety Holdings, LLC – Common Equity |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 435 | [16],[17],[24],[25] | 435 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 146,000 |  |  |  |
Ending Balance |  | $ 101,000 | [24],[25] | $ 146,000 | [26],[27] |
Investment, Identifier [Axis]: Triple H Food Processors, LLC – Common Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 250,000 | [16],[17],[24],[25] | 250,000 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 1,641,000 |  |  |  |
Ending Balance |  | $ 1,346,000 | [24],[25] | $ 1,641,000 | [26],[27] |
Investment, Identifier [Axis]: Triple H Food Processors, LLC – Preferred Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 75 | [16],[17],[24],[25] | 75 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 141,000 |  |  |  |
Ending Balance |  | 167,000 | [24],[25] | $ 141,000 | [26],[27] |
Investment, Identifier [Axis]: Trowbridge Chicago, LLC – Line of Credit |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [19],[20],[22] |  |  | 0 |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 0 |  |  |  |
Ending Balance | [22] |  |  | 0 |  |
Line of credit facility, available | [6],[7],[9],[10],[22] |  |  | $ 2,000,000 |  |
Investment, reference rate and spread | [6],[7],[9],[10],[22] |  |  | 7.00% |  |
Investment, interest rate, paid in cash | [6],[7],[9],[10],[22] |  |  | 12.30% |  |
Investment, Identifier [Axis]: Trowbridge Chicago, LLC – Preferred Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares | [19],[20],[26],[27] |  |  | 242,105 |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | 750,000 |  |  |  |
Ending Balance | [26],[27] |  |  | $ 750,000 |  |
Investment, Identifier [Axis]: Trowbridge Chicago, LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [19],[20],[22] |  |  | 5,750,000 |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 5,664,000 |  |  |  |
Ending Balance | [22] |  |  | $ 5,664,000 |  |
Investment, reference rate and spread | [6],[7],[9],[10],[22] |  |  | 7.00% |  |
Investment, interest rate, paid in cash | [6],[7],[9],[10],[22] |  |  | 12.30% |  |
Investment, Identifier [Axis]: Turn Key Health Clinics, LLC – Line of Credit |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 0 | [16],[17],[21] | $ 500,000 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 499,000 |  |  |  |
Ending Balance |  | 0 | [21] | 499,000 | [22] |
Line of credit facility, available |  | $ 4,000,000 | [1],[2],[3],[4],[21] | $ 1,500,000 | [6],[7],[9],[10],[22] |
Investment, reference rate and spread |  | 7.30% | [1],[2],[3],[4],[21] | 7.30% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 12.10% | [1],[2],[3],[4],[21] | 12.60% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: Turn Key Health Clinics, LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 17,500,000 | [16],[17],[21] | $ 11,000,000 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 10,986,000 |  |  |  |
Ending Balance |  | $ 17,500,000 | [21] | $ 10,986,000 | [22] |
Investment, reference rate and spread |  | 7.30% | [1],[2],[3],[4],[21] | 7.30% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 12.10% | [1],[2],[3],[4],[21] | 12.60% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: Unirac Holdings, Inc. – Delayed Draw Term Loan |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 1,097,000 | [16],[17],[21] | $ 1,108,000 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 1,111,000 |  |  |  |
Ending Balance |  | 1,108,000 | [21] | 1,111,000 | [22] |
Line of credit facility, available |  | $ 0 | [1],[2],[3],[4],[21] | $ 1,669,000 | [6],[7],[9],[10],[22] |
Investment, reference rate and spread |  | 6.50% | [1],[2],[3],[4],[21] | 6.50% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 11.30% | [1],[2],[3],[4],[21] | 11.80% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: Unirac Holdings, Inc. – Line of Credit |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 978,000 | [16],[17],[21] | $ 978,000 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 980,000 |  |  |  |
Ending Balance |  | 978,000 | [21] | 980,000 | [22] |
Line of credit facility, available |  | $ 1,244,000 | [1],[2],[3],[4],[21] | $ 1,244,000 | [6],[7],[9],[10],[22] |
Investment, reference rate and spread |  | 6.50% | [1],[2],[3],[4],[21] | 6.50% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 11.30% | [1],[2],[3],[4],[21] | 11.80% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: Unirac Holdings, Inc. – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 14,738,000 | [16],[17],[21] | $ 14,888,000 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 14,925,000 |  |  |  |
Ending Balance |  | $ 14,885,000 | [21] | $ 14,925,000 | [22] |
Investment, reference rate and spread |  | 6.50% | [1],[2],[3],[4],[21] | 6.50% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 11.30% | [1],[2],[3],[4],[21] | 11.80% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: Viva Railings, LLC – Line of Credit |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 0 | [16],[17],[21] | $ 0 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 0 |  |  |  |
Ending Balance |  | 0 | [21] | 0 | [22] |
Line of credit facility, available |  | $ 4,000,000 | [1],[2],[3],[4],[21] | $ 4,000,000 | [6],[7],[9],[10],[22] |
Investment, reference rate and spread |  | 7.10% | [1],[2],[3],[4],[21] | 7.10% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 11.90% | [1],[2],[3],[4],[21] | 12.40% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: Viva Railings, LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [16],[17],[21] | $ 20,202,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Ending Balance | [21] | $ 20,202,000 |  |  |  |
Investment, reference rate and spread | [1],[2],[3],[4],[21] | 7.10% |  |  |  |
Investment, interest rate, paid in cash | [1],[2],[3],[4],[21] | 11.90% |  |  |  |
Investment, Identifier [Axis]: Viva Railings, LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount | [19],[20],[22] |  |  | $ 20,747,000 |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | $ 20,436,000 |  |  |  |
Ending Balance | [22] |  |  | $ 20,436,000 |  |
Investment, reference rate and spread | [6],[7],[9],[10],[22] |  |  | 7.10% |  |
Investment, interest rate, paid in cash | [6],[7],[9],[10],[22] |  |  | 12.40% |  |
Investment, Identifier [Axis]: WB Xcel Holdings, LLC - Common Warrant |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 1 |  |  |  |
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 |  | 0 |  |  |  |
Gross Additions |  | 1,000 |  |  |  |
Gross Reductions |  | 0 |  |  |  |
Net Unrealized Appreciation (Depreciation) |  | (1,000) |  |  |  |
Ending Balance |  | $ 0 |  | $ 0 |  |
Investment, Identifier [Axis]: WB Xcel Holdings, LLC - Preferred Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 333 |  |  |  |
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 |  | 0 |  |  |  |
Gross Additions |  | 0 |  |  |  |
Gross Reductions |  | 0 |  |  |  |
Net Unrealized Appreciation (Depreciation) |  | 0 |  |  |  |
Ending Balance |  | $ 0 |  | 0 |  |
Investment, Identifier [Axis]: WB Xcel Holdings, LLC – Common Warrant |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares | [16],[17],[24],[25] | 1 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Ending Balance | [24],[25] | $ 0 |  |  |  |
Investment, Identifier [Axis]: WB Xcel Holdings, LLC – Line of Credit |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 4,750,000 | [16],[17],[25],[30] | 1,468,000 | [19],[20],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [27] | 1,468,000 |  |  |  |
Ending Balance |  | 3,171,000 | [25],[30] | 1,468,000 | [27] |
Line of credit facility, available |  | $ 0 | [1],[2],[3],[4],[25],[30] | $ 32,000 | [6],[7],[9],[10],[27] |
Investment, reference rate and spread |  | 10.50% | [1],[2],[3],[4],[25],[30] | 10.50% | [6],[7],[9],[10],[27] |
Investment, interest rate, paid in cash |  | 15.30% | [1],[2],[3],[4],[25],[30] | 15.80% | [6],[7],[9],[10],[27] |
Investment, Identifier [Axis]: WB Xcel Holdings, LLC – Preferred Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 333 | [16],[17],[24],[25] | 333 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 0 |  |  |  |
Ending Balance |  | 0 | [24],[25] | $ 0 | [26],[27] |
Investment, Identifier [Axis]: WB Xcel Holdings, LLC – Term Debt |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 9,775,000 | [16],[17],[25],[30] | 9,825,000 | [19],[20],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [27] | 9,825,000 |  |  |  |
Ending Balance |  | $ 6,525,000 | [25],[30] | $ 9,825,000 | [27] |
Investment, reference rate and spread |  | 10.50% | [1],[2],[3],[4],[25],[30] | 10.50% | [6],[7],[9],[10],[27] |
Investment, interest rate, paid in cash |  | 15.30% | [1],[2],[3],[4],[25],[30] | 15.80% | [6],[7],[9],[10],[27] |
Investment, Identifier [Axis]: WB Xcel Holdings, LLC—Line of Credit |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 4,750,000 |  |  |  |
Net Realized Gain (Loss) for Period |  | 0 |  |  |  |
Amount of Investment Income |  | 59,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance |  | 1,468,000 |  |  |  |
Gross Additions |  | 3,282,000 |  |  |  |
Gross Reductions |  | 0 |  |  |  |
Net Unrealized Appreciation (Depreciation) |  | (1,579,000) |  |  |  |
Ending Balance |  | 3,171,000 |  | $ 1,468,000 |  |
Investment, Identifier [Axis]: WB Xcel Holdings, LLC—Term Loan |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 9,775,000 |  |  |  |
Net Realized Gain (Loss) for Period |  | 0 |  |  |  |
Amount of Investment Income |  | 402,000 |  |  |  |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance |  | 9,825,000 |  |  |  |
Gross Additions |  | 0 |  |  |  |
Gross Reductions |  | (50,000) |  |  |  |
Net Unrealized Appreciation (Depreciation) |  | (3,250,000) |  |  |  |
Ending Balance |  | $ 6,525,000 |  | $ 9,825,000 |  |
Investment, Identifier [Axis]: WorkforceQA, LLC – Common Stock |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Shares |  | 532 | [16],[17],[24],[25] | 532 | [19],[20],[26],[27] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [26],[27] | $ 359,000 |  |  |  |
Ending Balance |  | 346,000 | [24],[25] | $ 359,000 | [26],[27] |
Investment, Identifier [Axis]: WorkforceQA, LLC – Line of Credit |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | 1,200,000 | [16],[17],[21] | 400,000 | [19],[20],[22] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22] | 400,000 |  |  |  |
Ending Balance |  | 1,200,000 | [21] | 400,000 | [22] |
Line of credit facility, available |  | $ 800,000 | [1],[2],[3],[4],[21] | $ 1,600,000 | [6],[7],[9],[10],[22] |
Investment, reference rate and spread |  | 6.50% | [1],[2],[3],[4],[21] | 6.50% | [6],[7],[9],[10],[22] |
Investment, interest rate, paid in cash |  | 11.30% | [1],[2],[3],[4],[21] | 11.80% | [6],[7],[9],[10],[22] |
Investment, Identifier [Axis]: WorkforceQA, LLC – Term Debt 1 |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 16,306,000 | [16],[17],[21] | $ 10,000,000 | [19],[20],[22],[41] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22],[41] | 9,987,000 |  |  |  |
Ending Balance |  | $ 16,306,000 | [21] | $ 9,987,000 | [22],[41] |
Investment, reference rate and spread |  | 6.50% | [1],[2],[3],[4],[21] | 8.40% | [6],[7],[9],[10],[22],[41] |
Investment, interest rate, paid in cash |  | 11.30% | [1],[2],[3],[4],[21] | 13.70% | [6],[7],[9],[10],[22],[41] |
Investment, Identifier [Axis]: WorkforceQA, LLC – Term Debt 2 |  |  |  |  |  |
Investments in and Advances to Affiliates, Activity [Line Items] |  |  |  |  |  |
Principal amount |  | $ 2,406,000 | [16],[17],[21] | $ 1,600,000 | [19],[20],[22],[41] |
Investments in and Advances to Affiliates, at Fair Value [Roll Forward] |  |  |  |  |  |
Beginning Balance | [22],[41] | 1,598,000 |  |  |  |
Ending Balance |  | $ 2,406,000 | [21] | $ 1,598,000 | [22],[41] |
Investment, reference rate and spread |  | 7.50% | [1],[2],[3],[4],[21] | 9.30% | [6],[7],[9],[10],[22],[41] |
Investment, interest rate, paid in cash |  | 12.30% | [1],[2],[3],[4],[21] | 14.60% | [6],[7],[9],[10],[22],[41] |
[1] | Category percentages represent the fair value of each category and subcategory as a percentage of net assets as of September 30, 2024.
[2] | Certain of the securities listed in this schedule are issued by affiliate(s) of the indicated portfolio company. The majority of the securities listed, totaling $714.4 million at fair value, are pledged as collateral under our revolving line of credit, as described further in Note 5—Borrowings in the accompanying Notes to Consolidated Financial Statements. Under the Investment Company Act of 1940, as amended (the “1940 Act”), we may not acquire any non-qualifying assets unless, at the time such acquisition is made, qualifying assets represent at least 70% of our total assets. As of September 30, 2024, our investment in Leeds Novamark Capital I, L.P. (“Leeds”) is considered a non-qualifying asset under Section 55 of the 1940 Act. Such non-qualifying assets represent less than 0.1% of total investments, at fair value, as of September 30, 2024.
[3] | Unless indicated otherwise, all of our investments are valued using Level 3 inputs within the Financial Accounting Standards Board (“FASB”) Accounting Standard Codification (“ASC”) Topic 820, “Fair Value Measurements and Disclosures” (“ASC 820”) fair value hierarchy. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.
[4] | Unless indicated otherwise, all cash interest rates are indexed to one-month Secured Overnight Financing Rate (“SOFR” or “S”), which was 4.85% as of September 30, 2024. If applicable, paid-in-kind (“PIK”) interest rates are noted separately from the cash interest rate. Certain securities are subject to an interest rate floor. The cash interest rate is the greater of the floor or SOFR plus a spread. Due dates represent the contractual maturity date.
[5] | Cumulative gross unrealized depreciation for federal income tax purposes is $66.1 million; cumulative gross unrealized appreciation for federal income tax purposes is $85.8 million. Cumulative net unrealized appreciation is $19.7 million, based on a tax cost of $776.5 million.
[6] | Category percentages represent the fair value of each category and subcategory as a percentage of net assets as of September 30, 2023.
[7] | Certain of the securities listed in this schedule are issued by affiliate(s) of the indicated portfolio company. The majority of the securities listed, totaling $628.3 million at fair value, are pledged as collateral under our revolving line of credit, as described further in Note 5—Borrowings in the accompanying Notes to Consolidated Financial Statements. Under the Investment Company Act of 1940, as amended (the “1940 Act”), we may not acquire any non-qualifying assets unless, at the time such acquisition is made, qualifying assets represent at least 70% of our total assets. As of September 30, 2023, our investments in Leeds Novamark Capital I, L.P. (“Leeds”) and Funko Acquisition Holdings, LLC (“Funko”) are considered non-qualifying assets under Section 55 of the 1940 Act. Such non-qualifying assets represent less than 0.1% of total investments, at fair value, as of September 30, 2023.
[8] | Cumulative gross unrealized depreciation for federal income tax purposes is $56.9 million; cumulative gross unrealized appreciation for federal income tax purposes is $33.7 million. Cumulative net unrealized depreciation is $23.2 million, based on a tax cost of $728.0 million.
[9] | Unless indicated otherwise, all of our investments are valued using Level 3 inputs within the Financial Accounting Standards Board (“FASB”) Accounting Standard Codification (“ASC”) Topic 820, “Fair Value Measurements and Disclosures” (“ASC 820”) fair value hierarchy. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.
[10] | Unless indicated otherwise, all cash interest rates are indexed to one-month Secured Overnight Financing Rate (“SOFR” or “S”), which was 5.32% as of September 30, 2023. If applicable, paid-in-kind (“PIK”) interest rates are noted separately from the cash interest rate. Certain securities are subject to an interest rate floor. The cash interest rate is the greater of the floor or SOFR plus a spread. Due dates represent the contractual maturity date.
[11] | Affiliate investments, as defined by the 1940 Act, are those in which we own, with the power to vote, between and inclusive of 5.0% and 25.0% of the issued and outstanding voting securities.
[12] | Affiliate investments, as defined by the 1940 Act, are those in which we own, with the power to vote, between and inclusive of 5.0% and 25.0% of the issued and outstanding voting securities.
[13] | 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.
[14] | 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.
[15] | Fair value was based on the indicative bid price on or near September 30, 2024, offered by the respective syndication agent’s trading desk.
[16] | 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.
[17] | Represents the principal balance for debt investments and the number of shares/units held for equity investments. Warrants are represented as a percentage of ownership, as applicable.
[18] | Fair value was based on the indicative bid price on or near September 30, 2023, offered by the respective syndication agent’s trading desk.
[19] | 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.
[20] | Represents the principal balance for debt investments and the number of shares/units held for equity investments. Warrants are represented as a percentage of ownership, as applicable.
[21] | Fair value was based on an internal yield analysis or on estimates of value submitted by a third party valuation firm.
[22] | Fair value was based on an internal yield analysis or on estimates of value submitted by a third party valuation firm.
[23] | Investment was exited subsequent to September 30, 2024. Refer to Note 14 – Subsequent Events for additional information.
[24] | Security is non-income producing.
[25] | Fair value was based on the total enterprise value of the portfolio company, which was then allocated to the portfolio company’s securities in order of their relative priority in the capital structure.
[26] | Security is non-income producing.
[27] | Fair value was based on the total enterprise value of the portfolio company, which was then allocated to the portfolio company’s securities in order of their relative priority in the capital structure.
[28] | One of our affiliated funds, Gladstone Investment Corporation, co-invested with us in this portfolio company pursuant to an exemptive order granted by the U.S. Securities and Exchange Commission.
[29] | One of our affiliated funds, Gladstone Investment Corporation, co-invested with us in this portfolio company pursuant to an exemptive order granted by the U.S. Securities and Exchange Commission.
[30] | Debt security is on non-accrual status.
[31] | The cash interest rate on this investment was indexed to 90-day SOFR, which was 5.40% as of September 30, 2023.
[32] | Debt security has a fixed interest rate.
[33] | Debt security has a fixed interest rate.
[34] | Debt security is on non-accrual status.
[35] | Our investment in Funko was valued using Level 2 inputs within ASC 820 of the fair value hierarchy. Our common units in Funko are convertible to class A common stock in Funko, Inc. upon meeting certain requirements. Fair value was based on the closing market price of shares of Funko, Inc. as of the reporting date, less a discount for lack of marketability. Funko, Inc. is traded on the Nasdaq Global Select Market under the trading symbol “FNKO.” Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.
[36] | The cash interest rate on this investment was indexed to 90-day SOFR, which was 4.59% as of September 30, 2024.
[37] | Fair value was based on net asset value provided by the fund as a practical expedient.
[38] | There are certain limitations on our ability to withdraw our partnership interest prior to dissolution of the entity, which must occur no later than May 9, 2024 or two years after all outstanding leverage has matured.
[39] | Fair value was based on net asset value provided by the fund as a practical expedient.
[40] | There are certain limitations on our ability to withdraw our partnership interest prior to dissolution of the entity, which must occur no later than May 9, 2024 or two years after all outstanding leverage has matured.
[41] | The Company has entered into an agreement that entitles it to the "last out" tranche of the first lien secured loans, whereby the "first out" tranche will receive priority as to the "last out" tranche with respect to payments of principal, interest, and any other amounts due thereunder.

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