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Investments - Schedule of Marketable Securities (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Cost | $ 82,083 | $ 97,147
Fair Value | 83,771 | 97,304
Sponsored funds |  |
Debt Securities, Available-for-sale [Line Items] |  |
Cost | 63,220 | 80,794
Fair Value | 63,296 | 77,433
Equity investments |  |
Debt Securities, Available-for-sale [Line Items] |  |
Cost | 17,406 | 16,353
Fair Value | 19,019 | 19,871
Debt securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Cost | 1,457 | 0
Fair Value | $ 1,456 | $ 0

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