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Investments - Schedule of Marketable Securities (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Investment Securities - fair value |  |
Cost | $ 104,545 | $ 82,083
Fair Value | 110,561 | 83,771
Sponsored funds |  |
Investment Securities - fair value |  |
Cost | 53,466 | 63,220
Fair Value | 56,383 | 63,296
Equity securities |  |
Investment Securities - fair value |  |
Cost | 19,020 | 17,406
Fair Value | 22,124 | 19,019
Debt securities |  |
Investment Securities - fair value |  |
Cost | 32,059 | 1,457
Fair Value | $ 32,054 | $ 1,456

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