Investment In Unconsolidated Affiliate (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Schedule of Equity Method Investments [Line Items]
Total investment in LSV	$ 57,291
Distributions received from LSV	33,147	$ 29,219
Company's share in the earnings of LSV	$ 31,643	$ 28,879
L S V Asset Management
Schedule of Equity Method Investments [Line Items]
Ownership interest in LSV	38.60%

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