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Equity Method Investments - Condensed Statements of Operations of LSV (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Schedule of Equity Method Investments [Line Items]        
Total revenue $ 559,601 $ 518,986 $ 1,110,945 $ 1,030,565
Equity Method Investment, Nonconsolidated Investee        
Schedule of Equity Method Investments [Line Items]        
Total revenue 114,215 113,820 214,143 221,169
Net income $ 87,311 $ 88,689 $ 161,825 $ 170,701