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Investment In Unconsolidated Affiliate (Statement of Operations) (Details) - LSV Asset Management - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Schedule of Equity Method Investments [Line Items]
Revenues	$ 121,232	$ 133,921	$ 365,164	$ 397,750
Net income	$ 96,699	$ 107,284	$ 289,918	$ 317,295

X

- Definition

The amount of net income (loss) reported by an equity method investment of the entity.

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- Definition

Amount of revenue from sale of product and rendering of service reported by equity method investee.

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