Fair Value Measurements - Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Financial Liabilities
Contingent consideration arrangements	$ (139,600)	$ (217,200)
Fair Value on Recurring Basis
Financial Assets
Money market fund	169,541	109,183
Investments in proprietary funds	596	534
Deferred compensation plan investments	34,147	31,274
Total Financial Assets	204,284	140,991
Financial Liabilities
Contingent consideration arrangements	(139,600)	(217,200)
Total Financial Liabilities	(139,600)	(217,200)
Fair Value on Recurring Basis | Level 1
Financial Assets
Money market fund	169,541	109,183
Investments in proprietary funds	596	534
Deferred compensation plan investments	34,147	31,274
Total Financial Assets	204,284	140,991
Fair Value on Recurring Basis | Level 2
Financial Assets
Total Financial Assets	0	0
Fair Value on Recurring Basis | Level 3
Financial Liabilities
Contingent consideration arrangements	(139,600)	(217,200)
Total Financial Liabilities	$ (139,600)	$ (217,200)