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COLLATERALIZED ARRANGEMENTS AND FINANCING - Reconciliation of Crypto Assets Held as Collateral (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2024
USD ($)
Crypto Asset [Roll Forward]  
January 1, 2024 $ 0
Collateral Received 90,798
Collateral Returned (15,374)
Gains 31,186
Losses 0
March 31, 2024 106,610
Cumulative adjustment  
Crypto Asset [Roll Forward]  
January 1, 2024 $ 0