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RELATED PARTY TRANSACTIONS - Schedule of Sale of Common Stock to Main Street (Details) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended
--- | ---
Sep. 30, 2025 | Aug. 31, 2025 | Jul. 31, 2025
Related Party Transaction [Line Items] |  |  |
Total number of shares purchased as part of publicly announced plans or programs (in shares) | 135,227,000 | 45,542,000 | 0
Average price paid per share (in dollars per share) | $ 13.98 | $ 14.25 | $ 0
Approximate dollar value of shares that may yet be purchased under the plans or programs | $ 62,318 | $ 64,206 | $ 64,854
Related Party | MSC Income |  |  |
Related Party Transaction [Line Items] |  |  |
Total number of shares purchased as part of publicly announced plans or programs (in shares) | 41,611,000 | 14,010,000 | 0
Average price paid per share (in dollars per share) | $ 13.98 | $ 14.25 | $ 0
Approximate dollar value of shares that may yet be purchased under the plans or programs | $ 19,175 | $ 19,756 | $ 19,955

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