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DISTRIBUTIONS TO COMMON STOCKHOLDERS - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2023 | [1] | Jun. 30, 2022 | [1] | Jun. 30, 2023 | Jun. 30, 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 |  |  | $ 24,700 | $ 20,300 |  |  |
Tax return of capital distribution | $ 0 | $ 1,774 |  |  | $ 1,400 |  |
[1] | Refer to Note 9 – Distributions to Common Stockholders in the accompanying Notes to Consolidated Financial Statements for additional information.

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