Fair Value Measurements - Schedule of Changes in Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Assets
Cash equivalents	$ 225,736	$ 197,240
Investment securities - fair value
Fair Value	83,771	97,304
Debt securities	1,456
Total assets measured at fair value	324,666	307,226
Liabilities
Total liabilities measured at fair value	36,100	56,200
Contingent consideration
Liabilities
Total liabilities measured at fair value	36,100	56,200
Sponsored funds
Investment securities - fair value
Fair Value	63,296	77,433
Equity securities
Investment securities - fair value
Fair Value	19,019	19,871
Nonqualified retirement plan assets
Investment securities - fair value
Nonqualified retirement plan assets	15,159	12,682
Level 1
Assets
Cash equivalents	225,736	197,240
Investment securities - fair value
Debt securities	0
Total assets measured at fair value	323,210	307,226
Liabilities
Total liabilities measured at fair value	0	0
Level 1 \| Contingent consideration
Liabilities
Total liabilities measured at fair value	0	0
Level 1 \| Sponsored funds
Investment securities - fair value
Fair Value	63,296	77,433
Level 1 \| Equity securities
Investment securities - fair value
Fair Value	19,019	19,871
Level 1 \| Nonqualified retirement plan assets
Investment securities - fair value
Nonqualified retirement plan assets	15,159	12,682
Level 2
Assets
Cash equivalents	0	0
Investment securities - fair value
Debt securities	1,456
Total assets measured at fair value	1,456	0
Liabilities
Total liabilities measured at fair value	0	0
Level 2 \| Contingent consideration
Liabilities
Total liabilities measured at fair value	0	0
Level 2 \| Sponsored funds
Investment securities - fair value
Fair Value	0	0
Level 2 \| Equity securities
Investment securities - fair value
Fair Value	0	0
Level 2 \| Nonqualified retirement plan assets
Investment securities - fair value
Nonqualified retirement plan assets	0	0
Level 3
Assets
Cash equivalents	0	0
Investment securities - fair value
Debt securities	0
Total assets measured at fair value	0	0
Liabilities
Total liabilities measured at fair value	36,100	56,200
Level 3 \| Contingent consideration
Liabilities
Total liabilities measured at fair value	36,100	56,200
Level 3 \| Sponsored funds
Investment securities - fair value
Fair Value	0	0
Level 3 \| Equity securities
Investment securities - fair value
Fair Value	0	0
Level 3 \| Nonqualified retirement plan assets
Investment securities - fair value
Nonqualified retirement plan assets	$ 0	$ 0

Fair value portion of asset recognized for present right to economic benefit.

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