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Investment In Unconsolidated Affiliates (Condensed Statement Of Operations Of LSV) (Details) - L S V Asset Management [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Summarized Financial Information, Revenue	$ 102,754	$ 114,464	$ 326,192	$ 316,185
Equity Method Investment, Summarized Financial Information, Net Income (Loss)	$ 85,686	$ 97,332	$ 270,868	$ 267,075

X

- Definition

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

+ References

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The amount of revenue from sale of goods and services reduced by sales returns, allowances, and discounts reported by an equity method investment of the entity.

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