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Investment In Unconsolidated Affiliates (Condensed Balance Sheets of LSV) (Details) - LSV Asset Management [Member] - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
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Schedule of Equity Method Investments [Line Items] |  |
Current assets | $ 125,872 | $ 127,225
Non-current assets | 1,927 | 2,375
Total assets | 127,799 | 129,600
Current liabilities | 39,303 | 40,876
Partners’ capital | 88,496 | 88,724
Total liabilities and partners’ capital | $ 127,799 | $ 129,600

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