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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of investments in the VIE (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Variable Interest Entity [Line Items] |  |
Securities and other investments owned, at fair value | $ 664,070 | $ 1,092,106
Other assets | 31,713 | 47,542
Variable Interest Entity, Not Primary Beneficiary |  |
Variable Interest Entity [Line Items] |  |
Securities and other investments owned, at fair value | 3,728 | 28,573
Loans receivable, at fair value | 70,887 | 250,801
Other assets | 24,089 | 11,418
Maximum exposure to loss | $ 98,704 | $ 290,792

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