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INCOME TAXES - Net Assets Resulting From Operations To Estimated RIC Taxable Income (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Dec. 31, 2022 | Sep. 30, 2022 | Jun. 30, 2022 | Dec. 31, 2021 | Sep. 30, 2021 | Jun. 30, 2021 | Dec. 31, 2022 | Dec. 31, 2021
Income Tax Disclosure [Abstract] |  |  |  |  |  |  |  |
Net increase (decrease) in net assets from operations | $ 2,949 | $ 9,458 | $ 2,510 | $ 12,560 | $ (4,556) | $ 15,142 | $ 14,917 | $ 23,146
Net unrealized depreciation (appreciation) on investments |  |  |  |  |  |  | 13,989 | (4,306)
Income/gain (expense/loss) recognized for tax on pass-through entities |  |  |  |  |  |  | 10 | 1,558
(Gain) loss recognized on dispositions |  |  |  |  |  |  | (1,473) | 329
Capital loss carryover |  |  |  |  |  |  | 14,454 | 308
Net operating income - wholly-owned subsidiary |  |  |  |  |  |  | 1,071 | (9,186)
Dividend income from wholly-owned subsidiary |  |  |  |  |  |  | 1,068 | 0
Non-deductible tax expense |  |  |  |  |  |  | 466 | 191
Loss on extinguishment of debt |  |  |  |  |  |  | 0 | 12,950
Non-deductible compensation |  |  |  |  |  |  | 2,443 | 2,688
Compensation related book/tax differences |  |  |  |  |  |  | (1,471) | 2,542
Other book/tax differences |  |  |  |  |  |  | 1,839 | 3,518
Estimated distributable income before deductions for distributions |  |  |  |  |  |  | 47,313 | $ 33,738
Capital loss carryover | $ 31,900 |  |  |  |  |  | $ 31,900 |

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