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Investment in Unconsolidated Affiliate (Condensed Balance Sheets of LSV) (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Schedule of Equity Method Investments [Line Items]    
Current assets $ 1,431,420 $ 1,453,308
Total Assets 2,318,494 2,383,553
Current liabilities 272,505 397,883
Total Liabilities and Shareholders' Equity 2,318,494 2,383,553
Equity Method Investment, Nonconsolidated Investee    
Schedule of Equity Method Investments [Line Items]    
Current assets 118,770 158,326
Non-current assets 6,481 6,019
Total Assets 125,251 164,345
Current liabilities 39,302 77,306
Non-current liabilities 2,839 3,050
Partners’ capital 83,110 83,989
Total Liabilities and Shareholders' Equity $ 125,251 $ 164,345