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DISTRIBUTIONS TO COMMON STOCKHOLDERS - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Mar. 31, 2024
Equity [Abstract] |  |  |
Investment company, cash distributions paid to common stockholders from ordinary income | 67.80% |  |
Investment company, cash distributions paid to common stockholders from capital gains | 32.20% |  |
Cash distributions to common stockholders | $ 8.8 | $ 12.1 |
Investment company, distributions paid subsequent to fiscal year-end, classified in prior year, ordinary income |  |  | $ 18.7
Investment company, distribution paid subsequent to fiscal year-end, classified in prior year, capital gains |  |  | $ 1.4
Investment company, net adjustments for tax difference to capital distribution | $ 0.2 | $ 0.6 |

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