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Investment In Unconsolidated Affiliate (Statement of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Schedule of Equity Method Investments [Line Items]
Revenues	$ 475,651	$ 400,646	$ 931,337	$ 815,408
Equity Method Investment, Nonconsolidated Investee | LSV Asset Management
Schedule of Equity Method Investments [Line Items]
Revenues	116,392	94,648	227,229	194,644
Net income	$ 90,520	$ 72,847	$ 176,440	$ 149,744

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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