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INCOME TAXES - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands | Dec. 31, 2024 | Mar. 31, 2024
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Income Tax Contingency [Line Items] |  |
Undistributed ordinary income - tax basis | $ 33,900 |
Cumulative undistributed taxable income (in usd per share) | $ 0.68 |
Cost of investments | $ 1,727,200 | $ 1,471,100
Gross unrealized appreciation | 114,300 | 96,300
Gross unrealized depreciation | 140,200 | 96,400
Net unrealized appreciation (depreciation) | (25,900) | 100
Total net deferred tax (liabilities) assets | (15,629) | $ (11,997)
RIC |  |
Income Tax Contingency [Line Items] |  |
Cost of investments | 1,672,200 |
Gross unrealized appreciation | 15,100 |
Gross unrealized depreciation | 126,900 |
Net unrealized appreciation (depreciation) | (111,800) |
Taxable Subsidiary |  |
Income Tax Contingency [Line Items] |  |
Cost of investments | 55,000 |
Gross unrealized appreciation | 99,200 |
Gross unrealized depreciation | 13,300 |
Net unrealized appreciation (depreciation) | $ 85,900 |

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