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Investment in Unconsolidated Affiliate (Balance Sheets) (Details) - LSV Asset Management - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Schedule of Equity Method Investments [Line Items] |  |
Current assets | $ 113,926 | $ 144,547
Non-current assets | 4,769 | 5,048
Total assets | 118,695 | 149,595
Current liabilities | 42,631 | 46,828
Non-current liabilities | 5,153 | 5,326
Partners’ capital | 70,911 | 97,441
Total liabilities and partners’ capital | $ 118,695 | $ 149,595

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