| CONSOLIDATED SCHEDULE OF INVESTMENTS (Parentheticals) - USD ($)$ in Thousands
 | Sep. 30, 2024 | Sep. 30, 2023 | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 169.10% | [1],[2],[3],[4],[5] | 172.50% | [6],[7],[8],[9],[10] | 
| Investments, at fair value |  | $ 796,260 | [5] | $ 704,815 | [8] | 
| Percentage threshold of qualified assets representing total assets in order to acquire non-qualified assets |  | 70.00% |  | 70.00% |  | 
| Percentage of acquired non-qualifying assets of total assets |  | 0.10% |  | 0.10% |  | 
| Debt instrument, leverage maturity, terms |  | 2 years |  | 2 years |  | 
| Cumulative gross unrealized depreciation |  | $ 66,100 |  | $ 56,900 |  | 
| Cumulative net unrealized appreciation |  | 85,800 |  | 33,700 |  | 
| Cumulative gross unrealized appreciation (depreciation) for federal income tax purposes |  | 19,700 |  | (23,200) |  | 
| Based on a tax cost |  | $ 776,500 |  | $ 728,000 |  | 
| Secured Overnight Financing Rate (SOFR) |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, interest rate, paid in cash |  | 4.85% |  | 5.32% |  | 
| Secured Overnight Financing Rate (SOFR) _90 day |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, interest rate, paid in cash |  | 4.59% |  | 5.40% |  | 
| Collateral Pledged |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 714,400 |  | $ 628,300 |  | 
| Investment, Identifier [Axis]: 8th Avenue Food & Provisions, Inc. – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 7.90% | [1],[2],[3],[4],[11] | 7.90% | [6],[7],[9],[10],[12] | 
| Investment, interest rate, paid in cash |  | 12.70% | [1],[2],[3],[4],[11] | 13.20% | [6],[7],[9],[10],[12] | 
| Investments, at fair value |  | $ 3,241 | [11] | $ 2,495 | [12] | 
| Investment, Identifier [Axis]: ALS Education, LLC – Line of Credit |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 6.80% | [1],[2],[3],[4],[13] | 7.00% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 11.60% | [1],[2],[3],[4],[13] | 12.30% | [6],[7],[9],[10],[14] | 
| Line of credit facility, available |  | $ 3,000 | [1],[2],[3],[4],[13] | $ 3,000 | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 0 | [13] | $ 0 | [14] | 
| Investment, Identifier [Axis]: ALS Education, LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 6.80% | [1],[2],[3],[4],[13] | 7.00% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 11.60% | [1],[2],[3],[4],[13] | 12.30% | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 31,997 | [13] | $ 18,700 | [14] | 
| Investment, Identifier [Axis]: Antenna Research Associates, Inc. – Common Equity Units |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 59,423 | [15],[16],[17] | $ 18,436 | [18],[19] | 
| Investment, Identifier [Axis]: Antenna Research Associates, Inc. – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [1],[2],[3],[4],[15],[17] | 10.00% |  |  |  | 
| Investment, interest rate, paid in cash | [1],[2],[3],[4],[15],[17] | 14.80% |  |  |  | 
| Investment, interest rate, paid in kind | [1],[2],[3],[4],[15],[17] | 4.00% |  |  |  | 
| Investments, at fair value | [15],[17] | $ 31,267 |  |  |  | 
| Investment, Identifier [Axis]: Antenna Research Associates, Inc. – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [6],[7],[9],[10],[19] |  |  | 10.00% |  | 
| Investment, interest rate, paid in cash | [6],[7],[9],[10],[19] |  |  | 15.30% |  | 
| Investment, interest rate, paid in kind | [6],[7],[9],[10],[19] |  |  | 4.00% |  | 
| Investments, at fair value | [19] |  |  | $ 30,048 |  | 
| Investment, Identifier [Axis]: Arc Drilling Holdings LLC – Common Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 4,816 | [16],[17] | $ 403 | [18],[19] | 
| Investment, Identifier [Axis]: Arc Drilling Holdings LLC – Line of Credit |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 7.00% | [1],[2],[3],[4],[13] | 11.50% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 11.80% | [1],[2],[3],[4],[13] | 10.50% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in kind | [6],[7],[9],[10],[14] |  |  | 6.30% |  | 
| Line of credit facility, available |  | $ 4,000 | [1],[2],[3],[4],[13] | $ 1,000 | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 1,000 | [13] | $ 0 | [14] | 
| Investment, Identifier [Axis]: Arc Drilling Holdings LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 7.00% | [1],[2],[3],[4],[13] | 11.50% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 11.80% | [1],[2],[3],[4],[13] | 10.50% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in kind | [6],[7],[9],[10],[14] |  |  | 6.30% |  | 
| Investments, at fair value |  | $ 16,000 | [13] | $ 5,724 | [14] | 
| Investment, Identifier [Axis]: Axios Industrial Group, LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [6],[7],[9],[10],[14] |  |  | 8.60% |  | 
| Investment, interest rate, paid in cash | [6],[7],[9],[10],[14] |  |  | 13.90% |  | 
| Investments, at fair value | [14] |  |  | $ 11,291 |  | 
| Investment, Identifier [Axis]: Axios Industrial Group, LLC – Term Debt 1 |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [1],[2],[3],[4],[13] | 9.60% |  |  |  | 
| Investment, interest rate, paid in cash | [1],[2],[3],[4],[13] | 14.40% |  |  |  | 
| Investments, at fair value | [13] | $ 11,357 |  |  |  | 
| Investment, Identifier [Axis]: Axios Industrial Group, LLC – Term Debt 2 |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [1],[2],[3],[4],[13] | 12.60% |  |  |  | 
| Investment, interest rate, paid in cash | [1],[2],[3],[4],[13] | 17.40% |  |  |  | 
| Investments, at fair value | [13] | $ 3,008 |  |  |  | 
| Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Common Stock Warrant |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 0 | [16],[17],[20] | $ 0 | [18],[19],[21] | 
| Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Line of Credit |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [6],[7],[9],[10],[14],[21] |  |  | 2.00% |  | 
| Investment, interest rate, paid in cash | [6],[7],[9],[10],[14],[21] |  |  | 7.30% |  | 
| Line of credit facility, available | [6],[7],[9],[10],[14],[21] |  |  | $ 0 |  | 
| Investments, at fair value | [14],[21] |  |  | 978 |  | 
| Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Line of Credit 1 |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [1],[2],[3],[4],[17],[20],[22] | 2.00% |  |  |  | 
| Investment, interest rate, paid in cash | [1],[2],[3],[4],[17],[20],[22] | 7.00% |  |  |  | 
| Line of credit facility, available | [1],[2],[3],[4],[17],[20],[22] | $ 0 |  |  |  | 
| Investments, at fair value | [17],[20],[22] | $ 471 |  |  |  | 
| Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Line of Credit 2 |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [1],[2],[3],[4],[17],[20],[22] | 2.00% |  |  |  | 
| Investment, interest rate, paid in cash | [1],[2],[3],[4],[17],[20],[22] | 7.00% |  |  |  | 
| Line of credit facility, available | [1],[2],[3],[4],[17],[20],[22] | $ 127 |  |  |  | 
| Investments, at fair value | [17],[20],[22] | $ 115 |  |  |  | 
| Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Preferred Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value | [18],[19],[21] |  |  | $ 0 |  | 
| Investment, Identifier [Axis]: B+T Group Acquisition, Inc. – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 2.00% | [1],[2],[3],[4],[17],[20],[22] | 2.00% | [6],[7],[9],[10],[14],[21] | 
| Investment, interest rate, paid in cash |  | 7.00% | [1],[2],[3],[4],[17],[20],[22] | 7.30% | [6],[7],[9],[10],[14],[21] | 
| Investments, at fair value |  | $ 2,139 | [17],[20],[22] | $ 4,890 | [14],[21] | 
| Investment, Identifier [Axis]: B+T Group Acquisition, Inc.(S) – Preferred Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value | [16],[17],[20] | $ 0 |  |  |  | 
| Investment, Identifier [Axis]: CHA Holdings, Inc. – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [6],[7],[9],[10],[12],[23] |  |  | 9.00% |  | 
| Investment, interest rate, paid in cash | [6],[7],[9],[10],[12],[23] |  |  | 14.40% |  | 
| Investments, at fair value | [12],[23] |  |  | $ 2,820 |  | 
| Investment, Identifier [Axis]: Cafe Zupas – Line of Credit |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 7.50% | [1],[2],[3],[4],[13] | 6.80% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 12.30% | [1],[2],[3],[4],[13] | 12.10% | [6],[7],[9],[10],[14] | 
| Line of credit facility, available |  | $ 700 | [1],[2],[3],[4],[13] | $ 1,500 | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 1,061 | [13] | $ 0 | [14] | 
| Investment, Identifier [Axis]: Café Zupas – Delayed Draw Term Loan |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 7.50% | [1],[2],[3],[4],[13] | 6.80% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 12.30% | [1],[2],[3],[4],[13] | 12.10% | [6],[7],[9],[10],[14] | 
| Line of credit facility, available |  | $ 3,150 | [1],[2],[3],[4],[13] | $ 2,070 | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 7,424 | [13] | $ 7,850 | [14] | 
| Investment, Identifier [Axis]: Café Zupas – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 7.50% | [1],[2],[3],[4],[13] | 6.80% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 12.30% | [1],[2],[3],[4],[13] | 12.10% | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 26,513 | [13] | $ 23,108 | [14] | 
| Investment, Identifier [Axis]: Canopy Safety Brands, LLC – Common Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 2,959 | [16],[17] | 2,404 | [18],[19] | 
| Investment, Identifier [Axis]: Canopy Safety Brands, LLC – Preferred Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 931 | [16],[17] | 857 | [18],[19] | 
| Investment, Identifier [Axis]: Canopy Safety Brands, LLC—Common Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 2,959 |  | 2,404 |  | 
| Investment, Identifier [Axis]: Canopy Safety Brands, LLC—Preferred Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 931 |  | $ 857 |  | 
| Investment, Identifier [Axis]: DKI Ventures, LLC – Line of Credit |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, interest rate, paid in cash |  | 9.00% | [1],[2],[3],[4],[17],[24] | 9.00% | [6],[7],[9],[10],[14],[25] | 
| Line of credit facility, available |  | $ 25 | [1],[2],[3],[4],[17],[24] | $ 170 | [6],[7],[9],[10],[14],[25] | 
| Investments, at fair value |  | $ 159 | [17],[24] | $ 113 | [14],[25] | 
| Investment, Identifier [Axis]: DKI Ventures, LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, interest rate, paid in cash |  | 9.00% | [1],[2],[3],[4],[17],[24] | 9.00% | [6],[7],[9],[10],[14],[25] | 
| Investments, at fair value |  | $ 2,684 | [17],[24] | $ 3,253 | [14],[25] | 
| Investment, Identifier [Axis]: Defiance Integrated Technologies, Inc. – Common Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 2,949 | [16],[17] | $ 3,948 | [18],[19] | 
| Investment, Identifier [Axis]: Defiance Integrated Technologies, Inc. – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 9.60% | [1],[2],[3],[4],[17] | 9.60% | [6],[7],[9],[10],[19] | 
| Investment, interest rate, paid in cash |  | 14.40% | [1],[2],[3],[4],[17] | 14.90% | [6],[7],[9],[10],[19] | 
| Investments, at fair value |  | $ 8,547 | [17] | $ 7,425 | [19] | 
| Investment, Identifier [Axis]: Defiance Integrated Technologies, Inc.—Common Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 2,949 |  | 3,948 |  | 
| Investment, Identifier [Axis]: Defiance Integrated Technologies, Inc.—Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 8,547 |  | $ 7,425 |  | 
| Investment, Identifier [Axis]: ENET Holdings, LLC – Line of Credit |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [1],[2],[3],[4],[13] | 7.30% |  |  |  | 
| Investment, interest rate, paid in cash | [1],[2],[3],[4],[13] | 12.10% |  |  |  | 
| Line of credit facility, available | [1],[2],[3],[4],[13] | $ 2,500 |  |  |  | 
| Investments, at fair value | [13] | $ 0 |  |  |  | 
| Investment, Identifier [Axis]: ENET Holdings, LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 7.30% | [1],[2],[3],[4],[13] | 8.30% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 12.10% | [1],[2],[3],[4],[13] | 13.60% | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 21,973 | [13] | $ 21,397 | [14] | 
| Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. – Preferred Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 0 | [16],[17],[20] | $ 0 | [18],[19],[21] | 
| Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc. – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 5.50% | [1],[2],[3],[4],[17],[20],[22] | 5.50% | [6],[7],[9],[10],[19],[21],[26] | 
| Investment, interest rate, paid in cash |  | 10.30% | [1],[2],[3],[4],[17],[20],[22] | 10.80% | [6],[7],[9],[10],[19],[21],[26] | 
| Investments, at fair value |  | $ 380 | [17],[20],[22] | $ 2,895 | [19],[21],[26] | 
| Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc.—Preferred Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 0 |  | 0 |  | 
| Investment, Identifier [Axis]: Edge Adhesives Holdings, Inc.—Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 380 |  | $ 2,895 |  | 
| Investment, Identifier [Axis]: Eegee’s LLC – Delayed Draw Term Loan |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 7.80% | [1],[2],[3],[4],[13] | 7.80% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 8.00% | [1],[2],[3],[4],[13] | 13.10% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in kind | [1],[2],[3],[4],[13] | 4.60% |  |  |  | 
| Line of credit facility, available |  | $ 0 | [1],[2],[3],[4],[13] | $ 4,500 | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 2,380 | [13] | $ 2,865 | [14] | 
| Investment, Identifier [Axis]: Eegee’s LLC – Line of Credit |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 7.80% | [1],[2],[3],[4],[13] | 7.80% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 12.60% | [1],[2],[3],[4],[13] | 13.10% | [6],[7],[9],[10],[14] | 
| Line of credit facility, available |  | $ 500 | [1],[2],[3],[4],[13] | $ 1,000 | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 1,135 | [13] | $ 0 | [14] | 
| Investment, Identifier [Axis]: Eegee’s LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 7.80% | [1],[2],[3],[4],[13] | 7.80% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 8.00% | [1],[2],[3],[4],[13] | 13.10% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in kind | [1],[2],[3],[4],[13] | 4.60% |  |  |  | 
| Investments, at fair value |  | $ 13,486 | [13] | $ 16,235 | [14] | 
| Investment, Identifier [Axis]: Encore Dredging Holdings, LLC – Preferred Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 3,168 | [16],[17] | 4,265 | [18],[19] | 
| Investment, Identifier [Axis]: Encore Dredging Holdings, LLC—Preferred Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 3,168 |  | 4,265 |  | 
| Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Common Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 0 | [16],[17] | $ 0 | [18],[19] | 
| Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Line of Credit |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 8.30% | [1],[2],[3],[4],[17] | 8.30% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 13.10% | [1],[2],[3],[4],[17] | 13.60% | [6],[7],[9],[10],[14] | 
| Line of credit facility, available |  | $ 3,000 | [1],[2],[3],[4],[17] | $ 3,000 | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 0 | [17] | $ 0 | [14] | 
| Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [1],[2],[3],[4],[17] | 8.30% |  |  |  | 
| Investment, interest rate, paid in cash | [1],[2],[3],[4],[17] | 10.00% |  |  |  | 
| Investment, interest rate, paid in kind | [1],[2],[3],[4],[17] | 3.10% |  |  |  | 
| Investments, at fair value | [17] | $ 19,283 |  |  |  | 
| Investment, Identifier [Axis]: Engineering Manufacturing Technologies, LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [6],[7],[9],[10],[14] |  |  | 8.30% |  | 
| Investment, interest rate, paid in cash | [6],[7],[9],[10],[14] |  |  | 13.60% |  | 
| Investments, at fair value | [14] |  |  | $ 19,726 |  | 
| Investment, Identifier [Axis]: FES Resources Holdings LLC – Common Equity Units |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 0 | [16],[17] | 0 | [18],[19] | 
| Investment, Identifier [Axis]: FES Resources Holdings LLC – Preferred Equity Units |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 0 | [16],[17] | $ 4,508 | [18],[19] | 
| Investment, Identifier [Axis]: FES Resources Holdings LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, interest rate, paid in cash | [1],[2],[3],[4],[17],[24] | 4.50% |  |  |  | 
| Investments, at fair value | [17],[24] | $ 163 |  |  |  | 
| Investment, Identifier [Axis]: Fix-It Group, LLC – Delayed Draw Term Loan |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 7.10% | [1],[2],[3],[4],[13] | 8.10% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 11.90% | [1],[2],[3],[4],[13] | 13.40% | [6],[7],[9],[10],[14] | 
| Line of credit facility, available |  | $ 0 | [1],[2],[3],[4],[13] | $ 0 | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 6,781 | [13] | $ 6,894 | [14] | 
| Investment, Identifier [Axis]: Fix-It Group, LLC – Line of Credit |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 7.10% | [1],[2],[3],[4],[13] | 8.10% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 11.90% | [1],[2],[3],[4],[13] | 13.40% | [6],[7],[9],[10],[14] | 
| Line of credit facility, available |  | $ 3,000 | [1],[2],[3],[4],[13] | $ 2,500 | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 0 | [13] | $ 499 | [14] | 
| Investment, Identifier [Axis]: Fix-It Group, LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 7.10% | [1],[2],[3],[4],[13] | 8.10% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 11.90% | [1],[2],[3],[4],[13] | 13.40% | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 13,457 | [13] | $ 12,170 | [14] | 
| Investment, Identifier [Axis]: Frontier Financial Group Inc. – Convertible Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, interest rate, paid in cash |  | 6.00% | [1],[2],[3],[4],[17],[24] | 6.00% | [6],[7],[9],[10],[19],[25] | 
| Investments, at fair value |  | $ 32 | [17],[24] | $ 24 | [19],[25] | 
| Investment, Identifier [Axis]: Frontier Financial Group Inc. – Preferred Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 0 | [16],[17] | 0 | [18],[19] | 
| Investment, Identifier [Axis]: Frontier Financial Group Inc. – Preferred Stock Warrant |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 0 | [16],[17] | 0 | [18],[19] | 
| Investment, Identifier [Axis]: Funko Acquisition Holdings, LLC(S) – Common Units |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value | [18],[21],[27] |  |  | 22 |  | 
| Investment, Identifier [Axis]: GFRC 360, LLC – Common Stock Warrants |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 0 | [16],[17] | $ 0 | [18],[19] | 
| Investment, Identifier [Axis]: GFRC 360, LLC – Line of Credit |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 8.00% | [1],[2],[3],[4],[13] | 8.00% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 12.80% | [1],[2],[3],[4],[13] | 13.30% | [6],[7],[9],[10],[14] | 
| Line of credit facility, available |  | $ 95 | [1],[2],[3],[4],[13] | $ 175 | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | 1,355 | [13] | 1,205 | [14] | 
| Investment, Identifier [Axis]: GFRC 360, LLC – Preferred Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 0 | [16],[17] | $ 253 | [18],[19] | 
| Investment, Identifier [Axis]: GFRC 360, LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 8.00% | [1],[2],[3],[4],[13] | 8.00% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 12.80% | [1],[2],[3],[4],[13] | 13.30% | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 1,000 | [13] | $ 945 | [14] | 
| Investment, Identifier [Axis]: GSM MidCo LLC – Common Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 1,583 | [16],[17] | $ 1,562 | [18],[19] | 
| Investment, Identifier [Axis]: Giving Home Health Care, LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, interest rate, paid in cash | [6],[7],[9],[10],[14],[25] |  |  | 12.50% |  | 
| Investments, at fair value | [14],[25] |  |  | $ 28,800 |  | 
| Investment, Identifier [Axis]: Giving Home Health Care, LLC – Warrant |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 3,995 | [16],[17] | $ 2,794 | [18],[19] | 
| Investment, Identifier [Axis]: Gray Matter Systems, LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, interest rate, paid in cash | [6],[7],[9],[10],[14],[25] |  |  | 12.00% |  | 
| Investment, interest rate, paid in kind | [6],[7],[9],[10],[14],[25] |  |  | 2.00% |  | 
| Investments, at fair value | [14],[25] |  |  | $ 13,645 |  | 
| Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Line of Credit |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 8.00% | [1],[2],[3],[4],[13],[28] | 8.00% | [6],[7],[9],[10],[14],[23] | 
| Investment, interest rate, paid in cash |  | 12.80% | [1],[2],[3],[4],[13],[28] | 13.40% | [6],[7],[9],[10],[14],[23] | 
| Line of credit facility, available |  | $ 110 | [1],[2],[3],[4],[13],[28] | $ 478 | [6],[7],[9],[10],[14],[23] | 
| Investments, at fair value |  | 1,677 | [13],[28] | 1,347 | [14],[23] | 
| Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Preferred Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 1,047 | [16],[17] | $ 3,451 | [18],[19] | 
| Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Term Debt 1 |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 8.00% | [1],[2],[3],[4],[13],[28] | 8.00% | [6],[7],[9],[10],[14],[23] | 
| Investment, interest rate, paid in cash |  | 12.80% | [1],[2],[3],[4],[13],[28] | 13.40% | [6],[7],[9],[10],[14],[23] | 
| Investments, at fair value |  | $ 15,399 | [13],[28] | $ 15,872 | [14],[23] | 
| Investment, Identifier [Axis]: HH-Inspire Acquisition, Inc. – Term Debt 2 |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 8.00% | [1],[2],[3],[4],[13],[28] | 8.00% | [6],[7],[9],[10],[14],[23] | 
| Investment, interest rate, paid in cash |  | 12.80% | [1],[2],[3],[4],[13],[28] | 13.40% | [6],[7],[9],[10],[14],[23] | 
| Investments, at fair value |  | $ 3,102 | [13],[28] | $ 3,197 | [14],[23] | 
| Investment, Identifier [Axis]: Imperative Holdings Corporation – Preferred Equity Units |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 2,275 | [16],[17] | $ 2,318 | [18],[19] | 
| Investment, Identifier [Axis]: Imperative Holdings Corporation – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 9.80% | [1],[2],[3],[4],[13] | 9.80% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 14.60% | [1],[2],[3],[4],[13] | 15.10% | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 18,015 | [13] | $ 20,858 | [14] | 
| Investment, Identifier [Axis]: Leadpoint Business Services, LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 8.50% | [1],[2],[3],[4],[13] | 8.50% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 13.30% | [1],[2],[3],[4],[13] | 13.80% | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 26,010 | [13] | $ 13,399 | [14] | 
| Investment, Identifier [Axis]: Leeds Novamark Capital I, L.P. – Limited Partnership Interest |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Line of credit facility, available |  | 843 | [1],[2],[3],[4],[16],[29],[30] | 843 | [6],[7],[9],[10],[18],[31],[32] | 
| Investments, at fair value |  | $ 38 | [16],[29],[30] | $ 231 | [18],[31],[32] | 
| Investment, Identifier [Axis]: Lonestar EMS, LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, interest rate, paid in cash | [1],[2],[3],[4],[17],[24] | 12.00% |  |  |  | 
| Investment, interest rate, paid in kind | [6],[7],[9],[10],[19],[25] |  |  | 8.00% |  | 
| Investments, at fair value |  | $ 4,200 | [17],[24] | $ 3,927 | [19],[25] | 
| Investment, Identifier [Axis]: Lonestar EMS, LLC - Common Units |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 8,214 |  | 0 |  | 
| Investment, Identifier [Axis]: Lonestar EMS, LLC – Common Units |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 8,214 | [16],[17] | 0 | [18],[19] | 
| Investment, Identifier [Axis]: Lonestar EMS, LLC — Delayed Draw Term Loan |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 0 |  | 0 |  | 
| Investment, Identifier [Axis]: Lonestar EMS, LLC—Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 4,200 |  | 3,927 |  | 
| Investment, Identifier [Axis]: MCG Energy Solutions, LLC – Preferred Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 9,954 | [16],[17] | $ 8,904 | [18],[19] | 
| Investment, Identifier [Axis]: MCG Energy Solutions, LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 7.60% | [1],[2],[3],[4],[17] | 7.60% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 12.40% | [1],[2],[3],[4],[17] | 12.90% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in kind |  | 3.50% | [1],[2],[3],[4],[17] | 3.50% | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 20,290 | [17] | $ 17,628 | [14] | 
| Investment, Identifier [Axis]: NeoGraf Solutions LLC – Common Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 859 | [16],[17] | $ 0 | [18],[19] | 
| Investment, Identifier [Axis]: NeoGraf Solutions LLC – Line of Credit |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 7.00% | [1],[2],[3],[4],[13] | 7.00% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 11.00% | [1],[2],[3],[4],[13] | 11.00% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in kind |  | 0.80% | [1],[2],[3],[4],[13] | 1.30% | [6],[7],[9],[10],[14] | 
| Line of credit facility, available |  | $ 4,500 | [1],[2],[3],[4],[13] | $ 4,500 | [6],[7],[9],[10],[14] | 
| Investments, at fair value | [13] | $ 0 |  |  |  | 
| Investment, Identifier [Axis]: NeoGraf Solutions LLC – Line of Credit, $4,500 available |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value | [14] |  |  | $ 0 |  | 
| Investment, Identifier [Axis]: NeoGraf Solutions LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [1],[2],[3],[4],[13] | 7.00% |  |  |  | 
| Investment, interest rate, paid in cash | [1],[2],[3],[4],[13] | 11.00% |  |  |  | 
| Investment, interest rate, paid in kind | [1],[2],[3],[4],[13] | 0.80% |  |  |  | 
| Investments, at fair value | [13] | $ 26,350 |  |  |  | 
| Investment, Identifier [Axis]: NeoGraf Solutions LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [6],[7],[9],[10],[14] |  |  | 7.00% |  | 
| Investment, interest rate, paid in cash | [6],[7],[9],[10],[14] |  |  | 11.00% |  | 
| Investment, interest rate, paid in kind | [6],[7],[9],[10],[14] |  |  | 1.30% |  | 
| Investments, at fair value | [14] |  |  | $ 26,000 |  | 
| Investment, Identifier [Axis]: OCI, LLC – Common Units |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 0 | [16],[17] | $ 0 | [18],[19] | 
| Investment, Identifier [Axis]: OCI, LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [6],[7],[9],[10],[14] |  |  | 7.50% |  | 
| Investment, interest rate, paid in cash | [6],[7],[9],[10],[14] |  |  | 12.80% |  | 
| Investments, at fair value | [14] |  |  | $ 19,800 |  | 
| Investment, Identifier [Axis]: OCI, LLC – Term Debt 1 |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [1],[2],[3],[4],[13] | 7.50% |  |  |  | 
| Investment, interest rate, paid in cash | [1],[2],[3],[4],[13] | 12.30% |  |  |  | 
| Investments, at fair value | [13] | $ 18,685 |  |  |  | 
| Investment, Identifier [Axis]: OCI, LLC – Term Debt 2 |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, interest rate, paid in cash |  | 7.00% | [1],[2],[3],[4],[13],[24] | 7.00% | [6],[7],[9],[10],[14],[25] | 
| Investment, interest rate, paid in kind |  | 7.00% | [1],[2],[3],[4],[13],[24] | 7.00% | [6],[7],[9],[10],[14],[25] | 
| Investments, at fair value |  | $ 2,303 | [13],[24] | $ 1,992 | [14],[25] | 
| Investment, Identifier [Axis]: Ohio Armor Holdings, LLC – Common Equity |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 1,086 | [16],[17] | $ 680 | [18],[19] | 
| Investment, Identifier [Axis]: Ohio Armor Holdings, LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [1],[2],[3],[4],[13] | 8.00% |  |  |  | 
| Investment, interest rate, paid in cash | [1],[2],[3],[4],[13] | 12.80% |  |  |  | 
| Investments, at fair value | [13] | $ 16,563 |  |  |  | 
| Investment, Identifier [Axis]: Ohio Armor Holdings, LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [6],[7],[9],[10],[14] |  |  | 8.00% |  | 
| Investment, interest rate, paid in cash | [6],[7],[9],[10],[14] |  |  | 13.30% |  | 
| Investments, at fair value | [14] |  |  | $ 17,294 |  | 
| Investment, Identifier [Axis]: PIC 360, LLC – Common Equity Units |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value | [18],[19] |  |  | 284 |  | 
| Investment, Identifier [Axis]: PIC 360, LLC—Common Equity Units |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 0 |  | $ 284 |  | 
| Investment, Identifier [Axis]: Pansophic Learning, Ltd. – Term Debt 1 |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [6],[7],[9],[10],[14],[23] |  |  | 7.50% |  | 
| Investment, interest rate, paid in cash | [6],[7],[9],[10],[14],[23] |  |  | 12.90% |  | 
| Investments, at fair value | [14],[23] |  |  | $ 27,965 |  | 
| Investment, Identifier [Axis]: Pansophic Learning, Ltd. – Term Debt 2 |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [6],[7],[9],[10],[14],[23] |  |  | 7.50% |  | 
| Investment, interest rate, paid in cash | [6],[7],[9],[10],[14],[23] |  |  | 12.90% |  | 
| Investments, at fair value | [14],[23] |  |  | $ 4,994 |  | 
| Investment, Identifier [Axis]: Perimeter Solutions Group – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [1],[2],[3],[4],[13],[15] | 8.50% |  |  |  | 
| Investment, interest rate, paid in cash | [1],[2],[3],[4],[13],[15] | 13.30% |  |  |  | 
| Investments, at fair value | [13],[15] | $ 15,000 |  |  |  | 
| Investment, Identifier [Axis]: Quality Environmental Midco, Inc. – Line of Credit |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, interest rate, paid in cash | [1],[2],[3],[4],[13],[24] | 12.00% |  |  |  | 
| Line of credit facility, available | [1],[2],[3],[4],[13],[24] | $ 3,000 |  |  |  | 
| Investments, at fair value | [13],[24] | 0 |  |  |  | 
| Investment, Identifier [Axis]: Quality Environmental Midco, Inc. – Preferred Equity |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value | [16],[17] | $ 3,582 |  |  |  | 
| Investment, Identifier [Axis]: Quality Environmental Midco, Inc. – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, interest rate, paid in cash | [1],[2],[3],[4],[13],[24] | 12.00% |  |  |  | 
| Investments, at fair value | [13],[24] | $ 13,390 |  |  |  | 
| Investment, Identifier [Axis]: RPM Freight Systems, LLC – Delayed Draw Term Loan |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [1],[2],[3],[4],[13] | 7.70% |  |  |  | 
| Investment, interest rate, paid in cash | [1],[2],[3],[4],[13] | 12.50% |  |  |  | 
| Line of credit facility, available | [1],[2],[3],[4],[13] | $ 5,000 |  |  |  | 
| Investments, at fair value | [13] | $ 0 |  |  |  | 
| Investment, Identifier [Axis]: RPM Freight Systems, LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [1],[2],[3],[4],[13] | 7.70% |  |  |  | 
| Investment, interest rate, paid in cash | [1],[2],[3],[4],[13] | 12.50% |  |  |  | 
| Investments, at fair value | [13] | $ 20,200 |  |  |  | 
| Investment, Identifier [Axis]: Salt & Straw, LLC – Common Warrant |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 47 | [16],[17] | $ 31 | [18],[19] | 
| Investment, Identifier [Axis]: Salt & Straw, LLC – Delayed Draw Term Loan |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 9.10% | [1],[2],[3],[4],[13] | 9.10% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 13.90% | [1],[2],[3],[4],[13] | 14.40% | [6],[7],[9],[10],[14] | 
| Line of credit facility, available |  | $ 3,500 | [1],[2],[3],[4],[13] | $ 1,300 | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 10,850 | [13] | $ 9,715 | [14] | 
| Investment, Identifier [Axis]: Salt & Straw, LLC – Line of Credit |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 9.10% | [1],[2],[3],[4],[13] | 9.10% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 13.90% | [1],[2],[3],[4],[13] | 14.40% | [6],[7],[9],[10],[14] | 
| Line of credit facility, available |  | $ 2,000 | [1],[2],[3],[4],[13] | $ 2,000 | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | 0 | [13] | 0 | [14] | 
| Investment, Identifier [Axis]: Salt & Straw, LLC – Preferred Equity |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value | [16],[17] | 9,450 |  |  |  | 
| Investment, Identifier [Axis]: Salvo Technologies, Inc. – Preferred Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value | [18],[19] |  |  | $ 1,225 |  | 
| Investment, Identifier [Axis]: Salvo Technologies, Inc. – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [6],[7],[9],[10],[14] |  |  | 9.50% |  | 
| Investment, interest rate, paid in cash | [6],[7],[9],[10],[14] |  |  | 14.80% |  | 
| Investments, at fair value | [14] |  |  | $ 10,900 |  | 
| Investment, Identifier [Axis]: Sea Link International IRB, Inc. – Preferred Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 220 | [16],[17] | $ 183 | [18],[19] | 
| Investment, Identifier [Axis]: Sea Link International IRB, Inc. – Term Debt 1 |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, interest rate, paid in cash |  | 11.30% | [1],[2],[3],[4],[13],[24] | 11.30% | [6],[7],[9],[10],[14],[25] | 
| Investment, interest rate, paid in kind |  | 2.00% | [1],[2],[3],[4],[13],[24] | 2.00% | [6],[7],[9],[10],[14],[25] | 
| Investments, at fair value |  | $ 12,331 | [13],[24] | $ 11,675 | [14],[25] | 
| Investment, Identifier [Axis]: Sea Link International IRB, Inc. – Term Debt 2 |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, interest rate, paid in cash |  | 12.00% | [1],[2],[3],[4],[13],[24] | 12.00% | [6],[7],[9],[10],[14],[25] | 
| Investment, interest rate, paid in kind |  | 2.00% | [1],[2],[3],[4],[13],[24] | 2.00% | [6],[7],[9],[10],[14],[25] | 
| Investments, at fair value |  | $ 4,079 | [13],[24] | $ 4,000 | [14],[25] | 
| Investment, Identifier [Axis]: Sea Link International IRB, Inc.– Common Equity Units |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 160 | [16],[17] | 340 | [18],[19] | 
| Investment, Identifier [Axis]: Sokol & Company Holdings, LLC – Common Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 2,727 | [16],[17] | $ 1,612 | [18],[19] | 
| Investment, Identifier [Axis]: Sokol & Company Holdings, LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 6.80% | [1],[2],[3],[4],[13] | 7.00% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 11.60% | [1],[2],[3],[4],[13] | 12.30% | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 8,500 | [13] | $ 13,095 | [14] | 
| Investment, Identifier [Axis]: SpaceCo Holdings, LLC – Line of Credit |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 6.40% | [1],[2],[3],[4],[13],[28] | 7.20% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 11.00% | [1],[2],[3],[4],[13],[28] | 12.50% | [6],[7],[9],[10],[14] | 
| Line of credit facility, available |  | $ 0 | [1],[2],[3],[4],[13],[28] | $ 550 | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 2,000 | [13],[28] | $ 1,434 | [14],[23] | 
| Investment, Identifier [Axis]: SpaceCo Holdings, LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 6.40% | [1],[2],[3],[4],[13],[28] | 7.20% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 11.00% | [1],[2],[3],[4],[13],[28] | 12.50% | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 42,757 | [13],[28] | $ 29,944 | [14],[23] | 
| Investment, Identifier [Axis]: Springfield, Inc. – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 11.10% | [1],[2],[3],[4],[13] | 10.10% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 15.90% | [1],[2],[3],[4],[13] | 15.40% | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 30,000 | [13] | $ 29,850 | [14] | 
| Investment, Identifier [Axis]: TNCP Intermediate HoldCo, LLC – Common Equity Units |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 4,312 | [16],[17] | $ 3,073 | [18],[19] | 
| Investment, Identifier [Axis]: TNCP Intermediate HoldCo, LLC – Line of Credit |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, interest rate, paid in cash | [6],[7],[9],[10],[19],[25] |  |  | 8.00% |  | 
| Line of credit facility, available | [6],[7],[9],[10],[19],[25] |  |  | $ 1,100 |  | 
| Investments, at fair value |  | $ 0 | [17],[24] | 900 | [19],[25] | 
| Investment, Identifier [Axis]: TNCP Intermediate HoldCo, LLC—-Line of Credit |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, interest rate, paid in cash | [1],[2],[3],[4],[17],[24] | 11.00% |  |  |  | 
| Line of credit facility, available | [1],[2],[3],[4],[17],[24] | $ 2,000 |  |  |  | 
| Investments, at fair value |  | 0 |  | 900 |  | 
| Investment, Identifier [Axis]: TNCP Intermediate HoldCo, LLC—Common Equity Units |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 4,312 |  | $ 3,073 |  | 
| Investment, Identifier [Axis]: Tailwind Smith Cooper Intermediate Corporation – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [6],[7],[9],[10],[12],[23] |  |  | 9.00% |  | 
| Investment, interest rate, paid in cash | [6],[7],[9],[10],[12],[23] |  |  | 14.40% |  | 
| Investments, at fair value | [12],[23] |  |  | $ 4,294 |  | 
| Investment, Identifier [Axis]: Technical Resource Management, LLC – Common Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 34 | [16],[17] | $ 1,415 | [18],[19] | 
| Investment, Identifier [Axis]: Technical Resource Management, LLC – Delayed Draw Term Loan |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [6],[7],[9],[10],[14] |  |  | 8.00% |  | 
| Investment, interest rate, paid in cash | [6],[7],[9],[10],[14] |  |  | 13.30% |  | 
| Line of credit facility, available | [6],[7],[9],[10],[14] |  |  | $ 2,500 |  | 
| Investments, at fair value | [14] |  |  | $ 0 |  | 
| Investment, Identifier [Axis]: Technical Resource Management, LLC – Line of Credit |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 8.00% | [1],[2],[3],[4],[13] | 8.00% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 12.80% | [1],[2],[3],[4],[13] | 13.30% | [6],[7],[9],[10],[14] | 
| Line of credit facility, available |  | $ 1,000 | [1],[2],[3],[4],[13] | $ 1,000 | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 2,008 | [13] | $ 1,970 | [14] | 
| Investment, Identifier [Axis]: Technical Resource Management, LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 8.00% | [1],[2],[3],[4],[13] | 8.00% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 12.80% | [1],[2],[3],[4],[13] | 13.30% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in kind | [1],[2],[3],[4],[13] | 2.50% |  |  |  | 
| Investments, at fair value |  | $ 23,327 | [13] | $ 22,655 | [14] | 
| Investment, Identifier [Axis]: Torrent Photonics Holdco LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [1],[2],[3],[4],[13] | 9.50% |  |  |  | 
| Investment, interest rate, paid in cash | [1],[2],[3],[4],[13] | 14.30% |  |  |  | 
| Investments, at fair value | [13] | $ 12,265 |  |  |  | 
| Investment, Identifier [Axis]: Torrent Photonics Holdco LLC – Preferred Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value | [16],[17] | 552 |  |  |  | 
| Investment, Identifier [Axis]: Total Access Elevator, LLC – Common Equity |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value | [16],[17] | $ 1,234 |  |  |  | 
| Investment, Identifier [Axis]: Total Access Elevator, LLC – Delayed Draw Term Loan |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [1],[2],[3],[4],[13] | 6.90% |  |  |  | 
| Investment, interest rate, paid in cash | [1],[2],[3],[4],[13] | 11.70% |  |  |  | 
| Line of credit facility, available | [1],[2],[3],[4],[13] | $ 2,500 |  |  |  | 
| Investments, at fair value | [13] | $ 0 |  |  |  | 
| Investment, Identifier [Axis]: Total Access Elevator, LLC – Line of Credit |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [1],[2],[3],[4],[13] | 6.90% |  |  |  | 
| Investment, interest rate, paid in cash | [1],[2],[3],[4],[13] | 11.70% |  |  |  | 
| Line of credit facility, available | [1],[2],[3],[4],[13] | $ 3,000 |  |  |  | 
| Investments, at fair value | [13] | $ 0 |  |  |  | 
| Investment, Identifier [Axis]: Total Access Elevator, LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [1],[2],[3],[4],[13] | 6.90% |  |  |  | 
| Investment, interest rate, paid in cash | [1],[2],[3],[4],[13] | 11.70% |  |  |  | 
| Investments, at fair value | [13] | $ 6,695 |  |  |  | 
| Investment, Identifier [Axis]: Total Safety Holdings, LLC – Common Equity |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 101 | [16],[17] | 146 | [18],[19] | 
| Investment, Identifier [Axis]: Triple H Food Processors, LLC – Common Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 1,346 | [16],[17] | 1,641 | [18],[19] | 
| Investment, Identifier [Axis]: Triple H Food Processors, LLC – Preferred Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 167 | [16],[17] | $ 141 | [18],[19] | 
| Investment, Identifier [Axis]: Trowbridge Chicago, LLC – Line of Credit |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [6],[7],[9],[10],[14] |  |  | 7.00% |  | 
| Investment, interest rate, paid in cash | [6],[7],[9],[10],[14] |  |  | 12.30% |  | 
| Line of credit facility, available | [6],[7],[9],[10],[14] |  |  | $ 2,000 |  | 
| Investments, at fair value | [14] |  |  | 0 |  | 
| Investment, Identifier [Axis]: Trowbridge Chicago, LLC – Preferred Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value | [18],[19] |  |  | $ 750 |  | 
| Investment, Identifier [Axis]: Trowbridge Chicago, LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [6],[7],[9],[10],[14] |  |  | 7.00% |  | 
| Investment, interest rate, paid in cash | [6],[7],[9],[10],[14] |  |  | 12.30% |  | 
| Investments, at fair value | [14] |  |  | $ 5,664 |  | 
| Investment, Identifier [Axis]: Turn Key Health Clinics, LLC – Line of Credit |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 7.30% | [1],[2],[3],[4],[13] | 7.30% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 12.10% | [1],[2],[3],[4],[13] | 12.60% | [6],[7],[9],[10],[14] | 
| Line of credit facility, available |  | $ 4,000 | [1],[2],[3],[4],[13] | $ 1,500 | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 0 | [13] | $ 499 | [14] | 
| Investment, Identifier [Axis]: Turn Key Health Clinics, LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 7.30% | [1],[2],[3],[4],[13] | 7.30% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 12.10% | [1],[2],[3],[4],[13] | 12.60% | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 17,500 | [13] | $ 10,986 | [14] | 
| Investment, Identifier [Axis]: Unirac Holdings, Inc. – Delayed Draw Term Loan |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 6.50% | [1],[2],[3],[4],[13] | 6.50% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 11.30% | [1],[2],[3],[4],[13] | 11.80% | [6],[7],[9],[10],[14] | 
| Line of credit facility, available |  | $ 0 | [1],[2],[3],[4],[13] | $ 1,669 | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 1,108 | [13] | $ 1,111 | [14] | 
| Investment, Identifier [Axis]: Unirac Holdings, Inc. – Line of Credit |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 6.50% | [1],[2],[3],[4],[13] | 6.50% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 11.30% | [1],[2],[3],[4],[13] | 11.80% | [6],[7],[9],[10],[14] | 
| Line of credit facility, available |  | $ 1,244 | [1],[2],[3],[4],[13] | $ 1,244 | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 978 | [13] | $ 980 | [14] | 
| Investment, Identifier [Axis]: Unirac Holdings, Inc. – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 6.50% | [1],[2],[3],[4],[13] | 6.50% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 11.30% | [1],[2],[3],[4],[13] | 11.80% | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 14,885 | [13] | $ 14,925 | [14] | 
| Investment, Identifier [Axis]: Viva Railings, LLC – Line of Credit |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 7.10% | [1],[2],[3],[4],[13] | 7.10% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 11.90% | [1],[2],[3],[4],[13] | 12.40% | [6],[7],[9],[10],[14] | 
| Line of credit facility, available |  | $ 4,000 | [1],[2],[3],[4],[13] | $ 4,000 | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 0 | [13] | $ 0 | [14] | 
| Investment, Identifier [Axis]: Viva Railings, LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [1],[2],[3],[4],[13] | 7.10% |  |  |  | 
| Investment, interest rate, paid in cash | [1],[2],[3],[4],[13] | 11.90% |  |  |  | 
| Investments, at fair value | [13] | $ 20,202 |  |  |  | 
| Investment, Identifier [Axis]: Viva Railings, LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread | [6],[7],[9],[10],[14] |  |  | 7.10% |  | 
| Investment, interest rate, paid in cash | [6],[7],[9],[10],[14] |  |  | 12.40% |  | 
| Investments, at fair value | [14] |  |  | $ 20,436 |  | 
| Investment, Identifier [Axis]: WB Xcel Holdings, LLC - Common Warrant |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 0 |  | 0 |  | 
| Investment, Identifier [Axis]: WB Xcel Holdings, LLC - Preferred Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 0 |  | $ 0 |  | 
| Investment, Identifier [Axis]: WB Xcel Holdings, LLC – Common Warrant |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value | [16],[17] | $ 0 |  |  |  | 
| Investment, Identifier [Axis]: WB Xcel Holdings, LLC – Line of Credit |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 10.50% | [1],[2],[3],[4],[17],[22] | 10.50% | [6],[7],[9],[10],[19] | 
| Investment, interest rate, paid in cash |  | 15.30% | [1],[2],[3],[4],[17],[22] | 15.80% | [6],[7],[9],[10],[19] | 
| Line of credit facility, available |  | $ 0 | [1],[2],[3],[4],[17],[22] | $ 32 | [6],[7],[9],[10],[19] | 
| Investments, at fair value |  | 3,171 | [17],[22] | 1,468 | [19] | 
| Investment, Identifier [Axis]: WB Xcel Holdings, LLC – Preferred Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 0 | [16],[17] | $ 0 | [18],[19] | 
| Investment, Identifier [Axis]: WB Xcel Holdings, LLC – Term Debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 10.50% | [1],[2],[3],[4],[17],[22] | 10.50% | [6],[7],[9],[10],[19] | 
| Investment, interest rate, paid in cash |  | 15.30% | [1],[2],[3],[4],[17],[22] | 15.80% | [6],[7],[9],[10],[19] | 
| Investments, at fair value |  | $ 6,525 | [17],[22] | $ 9,825 | [19] | 
| Investment, Identifier [Axis]: WB Xcel Holdings, LLC—Line of Credit |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 3,171 |  | 1,468 |  | 
| Investment, Identifier [Axis]: WB Xcel Holdings, LLC—Term Loan |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 6,525 |  | 9,825 |  | 
| Investment, Identifier [Axis]: WorkforceQA, LLC – Common Stock |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 346 | [16],[17] | $ 359 | [18],[19] | 
| Investment, Identifier [Axis]: WorkforceQA, LLC – Line of Credit |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 6.50% | [1],[2],[3],[4],[13] | 6.50% | [6],[7],[9],[10],[14] | 
| Investment, interest rate, paid in cash |  | 11.30% | [1],[2],[3],[4],[13] | 11.80% | [6],[7],[9],[10],[14] | 
| Line of credit facility, available |  | $ 800 | [1],[2],[3],[4],[13] | $ 1,600 | [6],[7],[9],[10],[14] | 
| Investments, at fair value |  | $ 1,200 | [13] | $ 400 | [14] | 
| Investment, Identifier [Axis]: WorkforceQA, LLC – Term Debt 1 |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 6.50% | [1],[2],[3],[4],[13] | 8.40% | [6],[7],[9],[10],[14],[33] | 
| Investment, interest rate, paid in cash |  | 11.30% | [1],[2],[3],[4],[13] | 13.70% | [6],[7],[9],[10],[14],[33] | 
| Investments, at fair value |  | $ 16,306 | [13] | $ 9,987 | [14],[33] | 
| Investment, Identifier [Axis]: WorkforceQA, LLC – Term Debt 2 |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment, reference rate and spread |  | 7.50% | [1],[2],[3],[4],[13] | 9.30% | [6],[7],[9],[10],[14],[33] | 
| Investment, interest rate, paid in cash |  | 12.30% | [1],[2],[3],[4],[13] | 14.60% | [6],[7],[9],[10],[14],[33] | 
| Investments, at fair value |  | $ 2,406 | [13] | $ 1,598 | [14],[33] | 
| Aerospace and Defense |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 153,096 |  | 97,836 |  | 
| Beverage, Food, and Tobacco |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 88,327 |  | 78,788 |  | 
| Diversified/Conglomerate Manufacturing |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 160,264 |  | 158,061 |  | 
| Healthcare, Education, and Childcare |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 101,707 |  | 146,438 |  | 
| Machinery |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 21,816 |  | 6,411 |  | 
| Automobile |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 28,286 |  | 27,571 |  | 
| Oil and Gas |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 20,554 |  | 27,830 |  | 
| Secured first lien debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 554,937 |  | 510,701 |  | 
| Secured second lien debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 113,716 |  | 127,854 |  | 
| Unsecured debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 32 |  | 24 |  | 
| Preferred equity |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | 31,346 |  | 26,855 |  | 
| Common equity/equivalents |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investments, at fair value |  | $ 96,229 |  | $ 39,381 |  | 
| Non-Control/Non-Affiliate investments |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 159.50% | [1],[2],[3],[4],[34] | 162.40% | [6],[7],[9],[10],[35] | 
| Investments, at fair value |  | $ 750,904 | [34] | $ 663,544 | [35] | 
| Non-Control/Non-Affiliate investments | Secured first lien debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 114.80% | [1],[2],[3],[4],[34] | 120.30% | [6],[7],[9],[10],[35] | 
| Investments, at fair value |  | $ 540,661 | [34] | $ 491,686 | [35] | 
| Non-Control/Non-Affiliate investments | Secured first lien debt | Aerospace and Defense |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 19.70% | [1],[2],[3],[4],[34] | 19.30% | [6],[7],[9],[10],[35] | 
| Investments, at fair value |  | $ 92,587 | [34] | $ 78,720 | [35] | 
| Non-Control/Non-Affiliate investments | Secured first lien debt | Beverage, Food, and Tobacco |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 15.20% | [1],[2],[3],[4],[34] | 17.80% | [6],[7],[9],[10],[35] | 
| Investments, at fair value |  | $ 71,349 | [34] | $ 72,868 | [35] | 
| Non-Control/Non-Affiliate investments | Secured first lien debt | Buildings and Real Estate |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.50% | [1],[2],[3],[4],[34] | 0.50% | [6],[7],[9],[10],[35] | 
| Investments, at fair value |  | $ 2,355 | [34] | $ 2,150 | [35] | 
| Non-Control/Non-Affiliate investments | Secured first lien debt | Diversified/Conglomerate Manufacturing |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 24.20% | [1],[2],[3],[4],[34] | 27.90% | [6],[7],[9],[10],[35] | 
| Investments, at fair value |  | $ 113,756 | [34] | $ 113,878 | [35] | 
| Non-Control/Non-Affiliate investments | Secured first lien debt | Diversified/Conglomerate Services |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets | [6],[7],[9],[10],[35] |  |  | 25.50% |  | 
| Investments, at fair value | [35] |  |  | $ 104,293 |  | 
| Non-Control/Non-Affiliate investments | Secured first lien debt | Healthcare, Education, and Childcare |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 20.20% | [1],[2],[3],[4],[34] | 26.50% | [6],[7],[9],[10],[35] | 
| Investments, at fair value |  | $ 95,010 | [34] | $ 108,185 | [35] | 
| Non-Control/Non-Affiliate investments | Secured first lien debt | Machinery |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 3.60% | [1],[2],[3],[4],[34] | 1.40% | [6],[7],[9],[10],[35] | 
| Investments, at fair value |  | $ 17,000 | [34] | $ 5,724 | [35] | 
| Non-Control/Non-Affiliate investments | Secured first lien debt | Personal and Non-Durable Consumer Products |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.50% | [1],[2],[3],[4],[34] | 1.40% | [6],[7],[9],[10],[35] | 
| Investments, at fair value |  | $ 2,725 | [34] | $ 5,868 | [35] | 
| Non-Control/Non-Affiliate investments | Secured first lien debt | Oil and Gas |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets | [1],[2],[3],[4],[34] | 0.00% |  |  |  | 
| Non-Control/Non-Affiliate investments | Secured second lien debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 22.30% | [1],[2],[3],[4],[34] | 29.50% | [6],[7],[9],[10],[35] | 
| Non-Control/Non-Affiliate investments | Secured second lien debt | Beverage, Food, and Tobacco |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.70% | [1],[2],[3],[4],[34] | 0.60% | [6],[7],[9],[10],[35] | 
| Non-Control/Non-Affiliate investments | Secured second lien debt | Diversified/Conglomerate Manufacturing |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 6.90% | [1],[2],[3],[4],[34] | 8.90% | [6],[7],[9],[10],[35] | 
| Investments, at fair value |  | $ 32,303 | [34] | $ 36,136 | [35] | 
| Non-Control/Non-Affiliate investments | Secured second lien debt | Diversified/Conglomerate Services |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 3.20% | [1],[2],[3],[4],[34] | 4.00% | [6],[7],[9],[10],[35] | 
| Investments, at fair value | [35] |  |  | $ 16,465 |  | 
| Non-Control/Non-Affiliate investments | Secured second lien debt | Healthcare, Education, and Childcare |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets | [6],[7],[9],[10],[35] |  |  | 7.10% |  | 
| Non-Control/Non-Affiliate investments | Secured second lien debt | Automobile |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 3.40% | [1],[2],[3],[4],[34] | 3.80% | [6],[7],[9],[10],[35] | 
| Investments, at fair value |  | $ 16,410 | [34] | $ 15,675 | [35] | 
| Non-Control/Non-Affiliate investments | Secured second lien debt | Oil and Gas |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 3.80% | [1],[2],[3],[4],[34] | 5.10% | [6],[7],[9],[10],[35] | 
| Investments, at fair value |  | $ 105,169 | [34] | $ 120,429 | [35] | 
| Non-Control/Non-Affiliate investments | Unsecured debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.10% | [1],[2],[3],[4],[34] | 0.00% | [6],[7],[9],[10],[35] | 
| Non-Control/Non-Affiliate investments | Unsecured debt | Diversified/Conglomerate Services |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets | [6],[7],[9],[10],[35] |  |  | 0.00% |  | 
| Non-Control/Non-Affiliate investments | Preferred equity |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 5.80% | [1],[2],[3],[4],[34] | 5.30% | [6],[7],[9],[10],[35] | 
| Investments, at fair value |  | $ 27,247 | [34] | $ 21,733 | [35] | 
| Non-Control/Non-Affiliate investments | Preferred equity | Beverage, Food, and Tobacco |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 2.00% | [1],[2],[3],[4],[34] | 0.00% | [6],[7],[9],[10],[35] | 
| Investments, at fair value | [34] | $ 9,617 |  |  |  | 
| Non-Control/Non-Affiliate investments | Preferred equity | Buildings and Real Estate |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.00% | [1],[2],[3],[4],[34] | 0.10% | [6],[7],[9],[10],[35] | 
| Non-Control/Non-Affiliate investments | Preferred equity | Diversified/Conglomerate Manufacturing |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.10% | [1],[2],[3],[4],[34] | 0.30% | [6],[7],[9],[10],[35] | 
| Non-Control/Non-Affiliate investments | Preferred equity | Diversified/Conglomerate Services |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets | [6],[7],[9],[10],[35] |  |  | 2.40% |  | 
| Investments, at fair value | [35] |  |  | $ 9,654 |  | 
| Non-Control/Non-Affiliate investments | Preferred equity | Healthcare, Education, and Childcare |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.20% | [1],[2],[3],[4],[34] | 0.80% | [6],[7],[9],[10],[35] | 
| Non-Control/Non-Affiliate investments | Preferred equity | Personal and Non-Durable Consumer Products |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.00% | [1],[2],[3],[4],[34] | 0.00% | [6],[7],[9],[10],[35] | 
| Non-Control/Non-Affiliate investments | Preferred equity | Automobile |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.10% | [1],[2],[3],[4],[34] | 0.00% | [6],[7],[9],[10],[35] | 
| Non-Control/Non-Affiliate investments | Preferred equity | Oil and Gas |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.50% | [1],[2],[3],[4],[34] | 1.70% | [6],[7],[9],[10],[35] | 
| Investments, at fair value |  | $ 2,275 | [34] | $ 6,826 | [35] | 
| Non-Control/Non-Affiliate investments | Common equity/equivalents |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 16.50% | [1],[2],[3],[4],[34] | 7.30% | [6],[7],[9],[10],[35] | 
| Investments, at fair value |  | $ 77,795 | [34] | $ 29,672 | [35] | 
| Non-Control/Non-Affiliate investments | Common equity/equivalents | Aerospace and Defense |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 12.80% | [1],[2],[3],[4],[34] | 4.70% | [6],[7],[9],[10],[35] | 
| Investments, at fair value |  | $ 60,509 | [34] | $ 19,116 | [35] | 
| Non-Control/Non-Affiliate investments | Common equity/equivalents | Beverage, Food, and Tobacco |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.90% | [1],[2],[3],[4],[34] | 0.80% | [6],[7],[9],[10],[35] | 
| Investments, at fair value |  | $ 4,120 | [34] | $ 3,284 | [35] | 
| Non-Control/Non-Affiliate investments | Common equity/equivalents | Buildings and Real Estate |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.00% | [1],[2],[3],[4],[34] | 0.00% | [6],[7],[9],[10],[35] | 
| Non-Control/Non-Affiliate investments | Common equity/equivalents | Diversified/Conglomerate Manufacturing |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.20% | [1],[2],[3],[4],[34] | 0.00% | [6],[7],[9],[10],[35] | 
| Investments, at fair value |  | $ 859 | [34] | $ 0 | [35] | 
| Non-Control/Non-Affiliate investments | Common equity/equivalents | Diversified/Conglomerate Services |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.30% | [1],[2],[3],[4],[34] | 0.10% | [6],[7],[9],[10],[35] | 
| Investments, at fair value | [34] | $ 1,580 |  |  |  | 
| Non-Control/Non-Affiliate investments | Common equity/equivalents | Healthcare, Education, and Childcare |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 1.20% | [1],[2],[3],[4],[34] | 1.50% | [6],[7],[9],[10],[35] | 
| Investments, at fair value |  | $ 5,650 | [34] | $ 6,002 | [35] | 
| Non-Control/Non-Affiliate investments | Common equity/equivalents | Machinery |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 1.00% | [1],[2],[3],[4],[34] | 0.10% | [6],[7],[9],[10],[35] | 
| Non-Control/Non-Affiliate investments | Common equity/equivalents | Personal and Non-Durable Consumer Products |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.00% | [1],[2],[3],[4],[34] | 0.00% | [6],[7],[9],[10],[35] | 
| Non-Control/Non-Affiliate investments | Common equity/equivalents | Automobile |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.10% | [1],[2],[3],[4],[34] | 0.10% | [6],[7],[9],[10],[35] | 
| Non-Control/Non-Affiliate investments | Common equity/equivalents | Oil and Gas |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.00% | [1],[2],[3],[4],[34] | 0.00% | [6],[7],[9],[10],[35] | 
| Investments, at fair value |  | $ 101 | [34] | $ 146 | [35] | 
| Non-Control/Non-Affiliate investments | Common equity/equivalents | Personal and Non-Durable Consumer Products (Manufacturing Only) |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets | [6],[7],[9],[10],[35] |  |  | 0.00% |  | 
| Affiliate investments |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 1.60% | [1],[2],[3],[4],[36] | 2.60% | [6],[7],[9],[10],[37] | 
| Investments, at fair value |  | $ 7,438 | [36] | $ 10,421 | [37] | 
| Affiliate investments | Secured first lien debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.10% | [1],[2],[3],[4],[36] | 0.70% | [6],[7],[9],[10],[37] | 
| Affiliate investments | Secured first lien debt | Diversified/Conglomerate Manufacturing |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.10% | [1],[2],[3],[4],[36] | 0.70% | [6],[7],[9],[10],[37] | 
| Affiliate investments | Preferred equity |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.90% | [1],[2],[3],[4],[36] | 1.30% | [6],[7],[9],[10],[37] | 
| Investments, at fair value |  | $ 4,099 | [36] | $ 5,122 | [37] | 
| Affiliate investments | Preferred equity | Diversified/Conglomerate Manufacturing |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.00% | [1],[2],[3],[4],[36] | 0.00% | [6],[7],[9],[10],[37] | 
| Affiliate investments | Preferred equity | Diversified/Conglomerate Services |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets | [6],[7],[9],[10],[37] |  |  | 1.10% |  | 
| Affiliate investments | Preferred equity | Personal and Non-Durable Consumer Products (Manufacturing Only) |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.20% | [1],[2],[3],[4],[36] | 0.20% | [6],[7],[9],[10],[37] | 
| Affiliate investments | Common equity/equivalents |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.60% | [1],[2],[3],[4],[36] | 0.60% | [6],[7],[9],[10],[37] | 
| Affiliate investments | Common equity/equivalents | Personal and Non-Durable Consumer Products (Manufacturing Only) |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.60% | [1],[2],[3],[4],[36] | 0.60% | [6],[7],[9],[10],[37] | 
| Control investments |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 8.00% | [1],[2],[3],[4],[38] | 7.50% | [6],[7],[9],[10],[39] | 
| Investments, at fair value |  | $ 37,918 | [38] | $ 30,850 | [39] | 
| Control investments | Secured first lien debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 3.00% | [1],[2],[3],[4],[38] | 3.90% | [6],[7],[9],[10],[39] | 
| Investments, at fair value |  | $ 13,896 | [38] | $ 16,120 | [39] | 
| Control investments | Secured first lien debt | Diversified/Conglomerate Manufacturing |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.90% | [1],[2],[3],[4],[38] | 0.90% | [6],[7],[9],[10],[39] | 
| Investments, at fair value |  | $ 4,200 |  | $ 3,927 |  | 
| Control investments | Secured first lien debt | Personal and Non-Durable Consumer Products (Manufacturing Only) |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 2.10% | [1],[2],[3],[4],[38] | 2.80% | [6],[7],[9],[10],[39] | 
| Investments, at fair value |  | $ 9,696 | [38] | $ 11,293 | [39] | 
| Control investments | Secured first lien debt | Printing and Publishing |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.00% | [1],[2],[3],[4],[38] | 0.20% | [6],[7],[9],[10],[39] | 
| Control investments | Secured second lien debt |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 1.80% | [1],[2],[3],[4],[38] | 1.80% | [6],[7],[9],[10],[39] | 
| Control investments | Secured second lien debt | Automobile |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 1.80% | [1],[2],[3],[4],[38] | 1.80% | [6],[7],[9],[10],[39] | 
| Control investments | Preferred equity |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.00% | [1],[2],[3],[4],[38] | 0.00% | [6],[7],[9],[10],[39] | 
| Control investments | Preferred equity | Personal and Non-Durable Consumer Products (Manufacturing Only) |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.00% | [1],[2],[3],[4],[38] | 0.00% | [6],[7],[9],[10],[39] | 
| Control investments | Common equity/equivalents |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 3.20% | [1],[2],[3],[4],[38] | 1.80% | [6],[7],[9],[10],[39] | 
| Investments, at fair value |  | $ 15,475 | [38] | $ 7,305 | [39] | 
| Control investments | Common equity/equivalents | Diversified/Conglomerate Manufacturing |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 1.70% | [1],[2],[3],[4],[38] | 0.00% | [6],[7],[9],[10],[39] | 
| Control investments | Common equity/equivalents | Machinery |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.00% |  | 0.10% | [6],[7],[9],[10],[39] | 
| Control investments | Common equity/equivalents | Automobile |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.60% | [1],[2],[3],[4],[38] | 1.00% | [6],[7],[9],[10],[39] | 
| Control investments | Common equity/equivalents | Personal and Non-Durable Consumer Products (Manufacturing Only) |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets | [1],[2],[3],[4],[38] | 0.00% |  |  |  | 
| Control investments | Common equity/equivalents | Printing and Publishing |  |  |  |  |  | 
| Schedule of Investments [Line Items] |  |  |  |  |  | 
| Investment owned, percent of net assets |  | 0.90% | [1],[2],[3],[4],[38] | 0.70% | [6],[7],[9],[10],[39] | 
|  | 
|  |