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INVESTMENTS - Investment Portfolio, at Fair Value and Cost (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2023 | Mar. 31, 2023
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 1,353,566 | [1],[2],[3] | $ 1,206,388 | [4],[5],[6]
Percentage of Net Assets at Fair Value | 205.80% | [1],[2] | 204.30% |
Cost | $ 1,360,955 | [1],[2],[7],[8] | $ 1,220,152 | [4],[5],[9],[10]
Percentage of Total Portfolio at Fair Value | Investment Type |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 100.00% |  | 100.00% |
Percentage of Total Portfolio at Fair Value | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 100.00% |  | 100.00% |
Percentage of Total Portfolio at Fair Value | Geographic |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 100.00% |  | 100.00% |
Percentage of Total Portfolio at Cost | Investment Type |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 100.00% |  | 100.00% |
Percentage of Total Portfolio at Cost | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 100.00% |  | 100.00% |
Percentage of Total Portfolio at Cost | Geographic |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 100.00% |  | 100.00% |
First lien loans |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 1,141,280 |  | $ 1,000,984 |
Percentage of Net Assets at Fair Value | 173.50% |  | 169.50% |
Cost | $ 1,154,172 |  | $ 1,018,595 |
First lien loans | Percentage of Total Portfolio at Fair Value | Investment Type |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 84.30% |  | 83.00% |
First lien loans | Percentage of Total Portfolio at Cost | Investment Type |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 84.80% |  | 83.50% |
Second lien loans |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 37,034 |  | $ 35,820 |
Percentage of Net Assets at Fair Value | 5.70% |  | 6.10% |
Cost | $ 43,071 |  | $ 44,038 |
Second lien loans | Percentage of Total Portfolio at Fair Value | Investment Type |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 2.70% |  | 3.00% |
Second lien loans | Percentage of Total Portfolio at Cost | Investment Type |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 3.20% |  | 3.60% |
Subordinated debt |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 760 |  | $ 791 |
Percentage of Net Assets at Fair Value | 0.10% |  | 0.10% |
Cost | $ 760 |  | $ 763 |
Subordinated debt | Percentage of Total Portfolio at Fair Value | Investment Type |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 0.10% |  | 0.10% |
Subordinated debt | Percentage of Total Portfolio at Cost | Investment Type |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 0.10% |  | 0.10% |
Preferred equity |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 66,440 |  | $ 63,393 |
Percentage of Net Assets at Fair Value | 10.10% |  | 10.70% |
Cost | $ 48,026 |  | $ 43,634 |
Preferred equity | Percentage of Total Portfolio at Fair Value | Investment Type |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 4.90% |  | 5.20% |
Preferred equity | Percentage of Total Portfolio at Cost | Investment Type |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 3.50% |  | 3.60% |
Common equity & warrants |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 54,630 |  | $ 54,144 |
Percentage of Net Assets at Fair Value | 8.30% |  | 9.20% |
Cost | $ 34,126 |  | $ 32,322 |
Common equity & warrants | Percentage of Total Portfolio at Fair Value | Investment Type |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 4.00% |  | 4.50% |
Common equity & warrants | Percentage of Total Portfolio at Cost | Investment Type |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 2.50% |  | 2.60% |
I-45 SLF LLC |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 53,422 |  | $ 51,256 |
Percentage of Net Assets at Fair Value | 8.10% |  | 8.70% |
Cost | $ 80,800 |  | $ 80,800 |
I-45 SLF LLC | Percentage of Total Portfolio at Fair Value | Investment Type |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 4.00% |  | 4.20% |
I-45 SLF LLC | Percentage of Total Portfolio at Cost | Investment Type |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 5.90% |  | 6.60% |
Northeast |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 337,330 |  | $ 269,569 |
Percentage of Net Assets at Fair Value | 51.30% |  | 45.70% |
Cost | $ 316,934 |  | $ 255,995 |
Northeast | Percentage of Total Portfolio at Fair Value | Geographic |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 24.90% |  | 22.30% |
Northeast | Percentage of Total Portfolio at Cost | Geographic |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 23.30% |  | 21.00% |
Southeast |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 235,606 |  | $ 235,782 |
Percentage of Net Assets at Fair Value | 35.80% |  | 39.90% |
Cost | $ 231,478 |  | $ 236,333 |
Southeast | Percentage of Total Portfolio at Fair Value | Geographic |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 17.40% |  | 19.50% |
Southeast | Percentage of Total Portfolio at Cost | Geographic |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 17.00% |  | 19.40% |
Southwest |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 238,578 |  | $ 234,127 |
Percentage of Net Assets at Fair Value | 36.30% |  | 39.60% |
Cost | $ 241,338 |  | $ 231,467 |
Southwest | Percentage of Total Portfolio at Fair Value | Geographic |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 17.60% |  | 19.40% |
Southwest | Percentage of Total Portfolio at Cost | Geographic |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 17.70% |  | 19.00% |
West |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 264,461 |  | $ 233,079 |
Percentage of Net Assets at Fair Value | 40.20% |  | 39.50% |
Cost | $ 265,904 |  | $ 232,109 |
West | Percentage of Total Portfolio at Fair Value | Geographic |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 19.60% |  | 19.30% |
West | Percentage of Total Portfolio at Cost | Geographic |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 19.60% |  | 19.00% |
Midwest |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 168,177 |  | $ 156,233 |
Percentage of Net Assets at Fair Value | 25.60% |  | 26.40% |
Cost | $ 169,870 |  | $ 158,989 |
Midwest | Percentage of Total Portfolio at Fair Value | Geographic |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 12.40% |  | 13.10% |
Midwest | Percentage of Total Portfolio at Cost | Geographic |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 12.50% |  | 13.00% |
I-45 SLF LLC |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 53,422 |  | $ 51,256 |
Percentage of Net Assets at Fair Value | 8.10% |  | 8.70% |
Cost | $ 80,800 |  | $ 80,800 |
I-45 SLF LLC | Percentage of Total Portfolio at Fair Value | Geographic |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 4.00% |  | 4.20% |
I-45 SLF LLC | Percentage of Total Portfolio at Cost | Geographic |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 5.90% |  | 6.60% |
International |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 55,992 |  | $ 26,342 |
Percentage of Net Assets at Fair Value | 8.50% |  | 4.50% |
Cost | $ 54,631 |  | $ 24,459 |
International | Percentage of Total Portfolio at Fair Value | Geographic |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 4.10% |  | 2.20% |
International | Percentage of Total Portfolio at Cost | Geographic |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 4.00% |  | 2.00% |
Business Services |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 163,911 |  | $ 146,727 |
Percentage of Net Assets at Fair Value | 24.90% |  | 24.90% |
Cost | $ 166,925 |  | $ 147,056 |
Business Services | Percentage of Total Portfolio at Fair Value | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 12.10% |  | 12.20% |
Business Services | Percentage of Total Portfolio at Cost | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 12.30% |  | 12.10% |
Media & Marketing |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 163,541 |  | $ 149,357 |
Percentage of Net Assets at Fair Value | 24.90% |  | 25.30% |
Cost | $ 156,737 |  | $ 139,750 |
Media & Marketing | Percentage of Total Portfolio at Fair Value | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 12.10% |  | 12.40% |
Media & Marketing | Percentage of Total Portfolio at Cost | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 11.50% |  | 11.50% |
Healthcare Services |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 176,397 |  | $ 126,971 |
Percentage of Net Assets at Fair Value | 26.80% |  | 21.50% |
Cost | $ 185,577 |  | $ 143,455 |
Healthcare Services | Percentage of Total Portfolio at Fair Value | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 13.00% |  | 10.50% |
Healthcare Services | Percentage of Total Portfolio at Cost | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 13.60% |  | 11.80% |
Consumer Products and Retail |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 100,561 |  | $ 86,385 |
Percentage of Net Assets at Fair Value | 15.30% |  | 14.60% |
Cost | $ 99,780 |  | $ 86,607 |
Consumer Products and Retail | Percentage of Total Portfolio at Fair Value | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 7.40% |  | 7.20% |
Consumer Products and Retail | Percentage of Total Portfolio at Cost | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 7.30% |  | 7.10% |
Consumer Services |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 84,483 |  | $ 91,913 |
Percentage of Net Assets at Fair Value | 12.80% |  | 15.60% |
Cost | $ 83,813 |  | $ 91,142 |
Consumer Services | Percentage of Total Portfolio at Fair Value | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 6.20% |  | 7.60% |
Consumer Services | Percentage of Total Portfolio at Cost | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 6.10% |  | 7.50% |
Healthcare Products |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 73,979 |  | $ 66,355 |
Percentage of Net Assets at Fair Value | 11.30% |  | 11.20% |
Cost | $ 74,216 |  | $ 67,555 |
Healthcare Products | Percentage of Total Portfolio at Fair Value | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 5.50% |  | 5.50% |
Healthcare Products | Percentage of Total Portfolio at Cost | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 5.50% |  | 5.50% |
Food, Agriculture & Beverage |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 68,426 |  | $ 68,833 |
Percentage of Net Assets at Fair Value | 10.40% |  | 11.70% |
Cost | $ 74,886 |  | $ 73,223 |
Food, Agriculture & Beverage | Percentage of Total Portfolio at Fair Value | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 5.10% |  | 5.70% |
Food, Agriculture & Beverage | Percentage of Total Portfolio at Cost | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 5.50% |  | 6.00% |
Technology Products & Components |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 50,543 |  | $ 59,718 |
Percentage of Net Assets at Fair Value | 7.70% |  | 10.10% |
Cost | $ 43,065 |  | $ 43,016 |
Technology Products & Components | Percentage of Total Portfolio at Fair Value | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 3.70% |  | 5.00% |
Technology Products & Components | Percentage of Total Portfolio at Cost | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 3.20% |  | 3.50% |
Software & IT Services |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 45,270 |  | $ 47,641 |
Percentage of Net Assets at Fair Value | 6.90% |  | 8.10% |
Cost | $ 44,623 |  | $ 47,563 |
Software & IT Services | Percentage of Total Portfolio at Fair Value | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 3.30% |  | 3.90% |
Software & IT Services | Percentage of Total Portfolio at Cost | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 3.30% |  | 3.90% |
I-45 SLF LLC |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 53,422 |  | $ 51,256 |
Percentage of Net Assets at Fair Value | 8.10% |  | 8.70% |
Cost | $ 80,800 |  | $ 80,800 |
I-45 SLF LLC | Percentage of Total Portfolio at Fair Value | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 4.00% |  | 4.20% |
I-45 SLF LLC | Percentage of Total Portfolio at Cost | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 5.90% |  | 6.60% |
Transportation & Logistics |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 50,386 |  | $ 48,494 |
Percentage of Net Assets at Fair Value | 7.70% |  | 8.20% |
Cost | $ 41,696 |  | $ 42,049 |
Transportation & Logistics | Percentage of Total Portfolio at Fair Value | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 3.70% |  | 4.00% |
Transportation & Logistics | Percentage of Total Portfolio at Cost | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 3.10% |  | 3.40% |
Financial Services |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 51,946 |  | $ 40,420 |
Percentage of Net Assets at Fair Value | 7.90% |  | 6.80% |
Cost | $ 38,313 |  | $ 30,950 |
Financial Services | Percentage of Total Portfolio at Fair Value | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 3.80% |  | 3.30% |
Financial Services | Percentage of Total Portfolio at Cost | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 2.80% |  | 2.50% |
Industrial Products |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 49,443 |  | $ 32,518 |
Percentage of Net Assets at Fair Value | 7.50% |  | 5.50% |
Cost | $ 36,511 |  | $ 25,827 |
Industrial Products | Percentage of Total Portfolio at Fair Value | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 3.70% |  | 2.70% |
Industrial Products | Percentage of Total Portfolio at Cost | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 2.70% |  | 2.10% |
Environmental Services |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 42,618 |  | $ 29,753 |
Percentage of Net Assets at Fair Value | 6.50% |  | 5.00% |
Cost | $ 51,350 |  | $ 34,869 |
Environmental Services | Percentage of Total Portfolio at Fair Value | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 3.20% |  | 2.50% |
Environmental Services | Percentage of Total Portfolio at Cost | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 3.80% |  | 2.90% |
Education |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 25,346 |  | $ 26,357 |
Percentage of Net Assets at Fair Value | 3.90% |  | 4.50% |
Cost | $ 24,834 |  | $ 25,995 |
Education | Percentage of Total Portfolio at Fair Value | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.90% |  | 2.20% |
Education | Percentage of Total Portfolio at Cost | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.80% |  | 2.10% |
Industrial Services |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 23,327 |  | $ 25,460 |
Percentage of Net Assets at Fair Value | 3.50% |  | 4.30% |
Cost | $ 22,843 |  | $ 24,920 |
Industrial Services | Percentage of Total Portfolio at Fair Value | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.70% |  | 2.10% |
Industrial Services | Percentage of Total Portfolio at Cost | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.70% |  | 2.00% |
Energy Services (Midstream) |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 22,837 |  | $ 22,829 |
Percentage of Net Assets at Fair Value | 3.50% |  | 3.90% |
Cost | $ 22,895 |  | $ 23,337 |
Energy Services (Midstream) | Percentage of Total Portfolio at Fair Value | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.70% |  | 1.90% |
Energy Services (Midstream) | Percentage of Total Portfolio at Cost | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.70% |  | 1.90% |
Aerospace & Defense |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 21,960 |  | $ 6,000 |
Percentage of Net Assets at Fair Value | 3.30% |  | 1.00% |
Cost | $ 21,760 |  | $ 5,898 |
Aerospace & Defense | Percentage of Total Portfolio at Fair Value | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.60% |  | 0.50% |
Aerospace & Defense | Percentage of Total Portfolio at Cost | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.60% |  | 0.50% |
Restaurants |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 15,680 |  |  |
Percentage of Net Assets at Fair Value | 2.40% |  |  |
Cost | $ 15,651 |  |  |
Restaurants | Percentage of Total Portfolio at Fair Value | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.20% |  |  |
Restaurants | Percentage of Total Portfolio at Cost | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.10% |  |  |
Telecommunications |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 15,298 |  | $ 17,386 |
Percentage of Net Assets at Fair Value | 2.30% |  | 2.90% |
Cost | $ 16,074 |  | $ 21,796 |
Telecommunications | Percentage of Total Portfolio at Fair Value | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.10% |  | 1.40% |
Telecommunications | Percentage of Total Portfolio at Cost | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.20% |  | 1.90% |
Distribution |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 15,217 |  | $ 16,315 |
Percentage of Net Assets at Fair Value | 2.30% |  | 2.80% |
Cost | $ 18,648 |  | $ 18,755 |
Distribution | Percentage of Total Portfolio at Fair Value | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.10% |  | 1.40% |
Distribution | Percentage of Total Portfolio at Cost | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.40% |  | 1.50% |
Specialty Chemicals |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 15,168 |  | $ 17,839 |
Percentage of Net Assets at Fair Value | 2.30% |  | 3.00% |
Cost | $ 14,934 |  | $ 17,531 |
Specialty Chemicals | Percentage of Total Portfolio at Fair Value | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.10% |  | 1.50% |
Specialty Chemicals | Percentage of Total Portfolio at Cost | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.10% |  | 1.40% |
Energy Services (Upstream) |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 14,631 |  | $ 17,730 |
Percentage of Net Assets at Fair Value | 2.20% |  | 3.00% |
Cost | $ 14,385 |  | $ 17,402 |
Energy Services (Upstream) | Percentage of Total Portfolio at Fair Value | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.10% |  | 1.50% |
Energy Services (Upstream) | Percentage of Total Portfolio at Cost | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 1.00% |  | 1.40% |
Containers & Packaging |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 9,176 |  | $ 10,131 |
Percentage of Net Assets at Fair Value | 1.40% |  | 1.70% |
Cost | $ 10,639 |  | $ 10,656 |
Containers & Packaging | Percentage of Total Portfolio at Fair Value | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 0.70% |  | 0.80% |
Containers & Packaging | Percentage of Total Portfolio at Cost | Industry |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Percentage of Total Portfolio | 0.80% |  | 0.90% |
First lien last out loans |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 33,400 |  | $ 50,100 |
Split lien term loans included in first lien loans |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | 43,100 |  | 45,000 |
Split lien term loans included in second lien loans |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | 21,200 |  | 20,200 |
Unsecured convertible Note |  |  |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |  |  |
Fair Value | $ 400 |  | $ 400 |
[1] | All debt investments are income-producing, unless otherwise noted. Equity investments are non-income producing, unless otherwise noted.
[2] | Equity ownership may be held in shares or units of a company that is either wholly owned by the portfolio company or under common control by the same parent company to the portfolio company.
[3] | The Company's investment portfolio is comprised entirely of debt and equity securities of privately held companies for which quoted prices falling within the categories of Level 1 and Level 2 inputs are not readily available. Therefore, the Company values all of its portfolio investments at fair value, as determined in good faith by the valuation committee comprised of certain officers of the Company (the "Valuation Committee") as the valuation designee of the Board of Directors (the "Valuation Designee") pursuant to Rule 2a-5 under the Investment Company Act of 1940, as amended (the “1940 Act”), using significant unobservable Level 3 inputs. Refer to Note 4 - Fair Value Measurements for further discussion.
[4] | All debt investments are income-producing, unless otherwise noted. Equity investments are non-income producing, unless otherwise noted.
[5] | Equity ownership may be held in shares or units of a company that is either wholly owned by the portfolio company or under common control by the same parent company to the portfolio company.
[6] | The Company's investment portfolio is comprised entirely of debt and equity securities of privately held companies for which quoted prices falling within the categories of Level 1 and Level 2 inputs are not readily available. Therefore, the Company values all of its portfolio investments at fair value, as determined in good faith by the Board of Directors, using significant unobservable Level 3 inputs. Refer to Note 4 - Fair Value Measurements to our audited consolidated financial statements for further discussion.
[7] | As of September 30, 2023, the cumulative gross unrealized appreciation for U.S. federal income tax purposes was approximately $79.3 million; cumulative gross unrealized depreciation for federal income tax purposes was $75.3 million. Cumulative net unrealized appreciation was $4.0 million, based on a tax cost of $1,349.6 million.
[8] | Negative cost in this column represents the original issue discount of certain undrawn revolvers and delayed draw term loans.
[9] | As of March 31, 2023, the cumulative gross unrealized appreciation for U.S. federal income tax purposes was approximately $72.3 million; cumulative gross unrealized depreciation for federal income tax purposes was $76.8 million. Cumulative net unrealized depreciation was $4.5 million, based on a tax cost of $1,210.8 million.
[10] | Negative cost in this column represents the original issue discount of certain undrawn revolvers and delayed draw term loans.

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