Annual report [Section 13 and 15(d), not S-K Item 405]

FAIR VALUE MEASUREMENTS - Schedule of Rollforward of Level 3 Assets at Cost Adjusted for any Impairment and Observable Price Changes (Details)

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FAIR VALUE MEASUREMENTS - Schedule of Rollforward of Level 3 Assets at Cost Adjusted for any Impairment and Observable Price Changes (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]      
Conversion of note receivable $ 0 $ 1,559 $ 0
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]   Realized and unrealized (losses) gains, net  
Other investments | Level 3      
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]      
Beginning balance 12,026 $ 8,369  
Conversion of note receivable   1,559  
Contribution of warehoused investments to managed funds   (3,117)  
Purchases 363 5,215  
Sales (1,559)    
Net unrealized gains (losses) 1,785    
Ending balance $ 12,615 $ 12,026 $ 8,369