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Investment in Unconsolidated Affiliates (Condensed Statements of Operations of LSV) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]      
Revenues $ 1,991,037 $ 1,918,309 $ 1,684,058
Equity Method Investment, Nonconsolidated Investee      
Schedule of Equity Method Investments [Line Items]      
Revenues 406,895 456,259 391,648
Net income $ 312,180 $ 354,964 $ 301,620