v3.25.2
FAIR VALUE MEASUREMENTS - Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis (Details) - USD ($)
$ in Thousands
Jun. 30, 2025
Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments $ 618,987 $ 598,048
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Other assets Other assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Other liabilities Other liabilities
Fair Value, Measurements, Recurring    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Restricted cash $ 200  
Derivative assets 88 $ 3,787
Assets, fair value disclosure 647,553 632,483
Securities sold, not yet purchased 4,471 4,529
Contingent consideration liability 2,248 4,495
Derivative liabilities 214,556 274,280
Total of liabilities measured at fair value 221,275 283,304
Fair Value, Measurements, Recurring | Debt    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 207  
Fair Value, Measurements, Recurring | Equity    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 56,315 58,623
Fair Value, Measurements, Recurring | Alternative investments    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 52,872 59,230
Fair Value, Measurements, Recurring | Debt    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 111,201 147,173
Fair Value, Measurements, Recurring | Equity    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 348,302 289,610
Fair Value, Measurements, Recurring | Private equity    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 50,090 43,412
Fair Value, Measurements, Recurring | U.S. Treasury Securities    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Deposits with banks and short-term investments 24,667 24,666
Fair Value, Measurements, Recurring | U.S. Treasury Securities    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Cash and cash equivalents 3,611 5,982
Fair Value, Measurements, Recurring | Level 1    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Restricted cash 200  
Derivative assets 0 0
Assets, fair value disclosure 540,229 517,693
Securities sold, not yet purchased 4,471 4,529
Contingent consideration liability 0 0
Derivative liabilities 0 0
Total of liabilities measured at fair value 4,471 4,529
Fair Value, Measurements, Recurring | Level 1 | Debt    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 0  
Fair Value, Measurements, Recurring | Level 1 | Equity    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 55,618 58,034
Fair Value, Measurements, Recurring | Level 1 | Alternative investments    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 7,901 10,763
Fair Value, Measurements, Recurring | Level 1 | Debt    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 100,280 129,004
Fair Value, Measurements, Recurring | Level 1 | Equity    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 347,952 289,244
Fair Value, Measurements, Recurring | Level 1 | Private equity    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 0 0
Fair Value, Measurements, Recurring | Level 1 | U.S. Treasury Securities    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Deposits with banks and short-term investments 24,667 24,666
Fair Value, Measurements, Recurring | Level 1 | U.S. Treasury Securities    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Cash and cash equivalents 3,611 5,982
Fair Value, Measurements, Recurring | Level 2    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Restricted cash 0  
Derivative assets 88 3,787
Assets, fair value disclosure 11,505 22,269
Securities sold, not yet purchased 0 0
Contingent consideration liability 0 0
Derivative liabilities 214,556 274,280
Total of liabilities measured at fair value 214,556 274,280
Fair Value, Measurements, Recurring | Level 2 | Debt    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 207  
Fair Value, Measurements, Recurring | Level 2 | Equity    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 0 0
Fair Value, Measurements, Recurring | Level 2 | Alternative investments    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 0 0
Fair Value, Measurements, Recurring | Level 2 | Debt    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 10,918 18,166
Fair Value, Measurements, Recurring | Level 2 | Equity    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 292 316
Fair Value, Measurements, Recurring | Level 2 | Private equity    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 0 0
Fair Value, Measurements, Recurring | Level 2 | U.S. Treasury Securities    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Deposits with banks and short-term investments 0 0
Fair Value, Measurements, Recurring | Level 2 | U.S. Treasury Securities    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Cash and cash equivalents 0 0
Fair Value, Measurements, Recurring | Level 3    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Restricted cash 0  
Derivative assets 0 0
Assets, fair value disclosure 986 845
Securities sold, not yet purchased 0 0
Contingent consideration liability 2,248 4,495
Derivative liabilities 0 0
Total of liabilities measured at fair value 2,248 4,495
Fair Value, Measurements, Recurring | Level 3 | Debt    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 0  
Fair Value, Measurements, Recurring | Level 3 | Equity    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 697 589
Fair Value, Measurements, Recurring | Level 3 | Alternative investments    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 0 0
Fair Value, Measurements, Recurring | Level 3 | Debt    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 0 0
Fair Value, Measurements, Recurring | Level 3 | Equity    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 0 0
Fair Value, Measurements, Recurring | Level 3 | Private equity    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 289 256
Fair Value, Measurements, Recurring | Level 3 | U.S. Treasury Securities    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Deposits with banks and short-term investments 0 0
Fair Value, Measurements, Recurring | Level 3 | U.S. Treasury Securities    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Cash and cash equivalents 0 0
Fair Value, Measurements, Recurring | NAV    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Restricted cash 0  
Derivative assets 0 0
Assets, fair value disclosure 94,833 91,676
Securities sold, not yet purchased 0 0
Contingent consideration liability 0 0
Derivative liabilities 0 0
Total of liabilities measured at fair value 0 0
Fair Value, Measurements, Recurring | NAV | Debt    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 0  
Fair Value, Measurements, Recurring | NAV | Equity    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 0 0
Fair Value, Measurements, Recurring | NAV | Alternative investments    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 44,971 48,467
Fair Value, Measurements, Recurring | NAV | Debt    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 3 3
Fair Value, Measurements, Recurring | NAV | Equity    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 58 50
Fair Value, Measurements, Recurring | NAV | Private equity    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Investments 49,801 43,156
Fair Value, Measurements, Recurring | NAV | U.S. Treasury Securities    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Deposits with banks and short-term investments 0 0
Fair Value, Measurements, Recurring | NAV | U.S. Treasury Securities    
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]    
Cash and cash equivalents $ 0 $ 0