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Composition of Certain Financial Statement Captions (Accrued Liabilities) (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Items Included in Consolidated Statement of Financial Condition [Abstract] |  |
Accrued employee compensation | $ 67,059 | $ 107,495
Accrued employee benefits and other personnel | 2,773 | 9,797
Accrued voluntary separation program | 9,388 | 21,058
Accrued consulting, outsourcing and professional fees | 31,899 | 32,285
Accrued sub-advisory, distribution and other asset management fees | 50,536 | 49,405
Accrued dividend payable | 1,051 | 61,104
Accrued income taxes | 11,017 | 4,965
Other accrued liabilities | 34,399 | 32,836
Total accrued liabilities | $ 208,122 | $ 318,945

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