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Investment In Unconsolidated Affiliate (Condensed Statements of Operations of LSV) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Schedule of Equity Method Investments [Line Items]        
Revenues $ 518,986 $ 489,057 $ 1,030,565 $ 958,176
Equity Method Investment, Nonconsolidated Investee        
Schedule of Equity Method Investments [Line Items]        
Revenues 113,820 108,836 221,169 207,028
Net income $ 88,689 $ 84,779 $ 170,701 $ 159,553