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Investment in Unconsolidated Affiliates (Condensed Statements of Operations of LSV) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Schedule of Equity Method Investments [Line Items]
Revenues	$ 1,918,309	$ 1,684,058	$ 1,649,885
LSV Asset Management | Equity Method Investment, Nonconsolidated Investee
Schedule of Equity Method Investments [Line Items]
Revenues	456,259	391,648	491,700
Net income	$ 354,964	$ 301,620	$ 390,533

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