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DISTRIBUTIONS TO COMMON STOCKHOLDERS - Narrative (Details) - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Sep. 30, 2022 | Dec. 31, 2022 | Dec. 31, 2021
Equity [Abstract] |  |  |  |  |
Investment company, cash distributions paid to common stockholders from ordinary income |  |  |  | 93.20% | 100.00%
Investment company, cash distributions paid to common stockholders from capital gains |  |  |  | 6.80% |
Cash distributions to common stockholders | $ 15.7 | $ 13.4 |  |  |
Tax return of capital distribution |  |  | $ 1.4 |  |

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