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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Mar. 31, 2024
--- | --- | ---
Summary of Investment Holdings [Line Items] |  |  |
Cost | $ 840,147 | $ 854,290 | [1]
Fair Value | 853,307 | 920,504 | [1]
B+T Group Acquisition, Inc., Edge Adhesives Holdings Inc., and J.R. Hobbs Co |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Cost | $ 90,000 |  |
Cost percentage | 13.80% |  |
Fair Value | $ 47,500 |  |
Fair value percentage | 8.20% |  |
Edge and J.R. Hobbs |  |  |
Summary of Investment Holdings [Line Items] |  |  |
Cost |  | $ 59,100 |
Cost percentage |  | 9.00% |
Fair Value |  | $ 29,700 |
Fair value percentage |  | 4.80% |
[1] | Cumulative gross unrealized appreciation for federal income tax purposes is $180.5 million; cumulative gross unrealized depreciation for federal income tax purposes is $115.8 million. Cumulative net unrealized appreciation is $64.7 million, based on a tax cost of $855.8 million.

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