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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Schedule of investments in the VIE (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Variable Interest Entity [Line Items] |  |
Securities and other investments owned, at fair value | $ 1,092,106 | $ 1,129,268
Other assets | 47,542 | 45,116
Variable Interest Entity, Not Primary Beneficiary |  |
Variable Interest Entity [Line Items] |  |
Securities and other investments owned, at fair value | 28,573 | 33,743
Loans receivable, at fair value | 250,801 | 46,700
Other assets | 11,418 | 3,755
Maximum exposure to loss | $ 290,792 | $ 84,198

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