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Related Parties - Additional Information (Details) - USD ($)
$ in Thousands
 12 Months Ended
Oct. 26, 2015
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Related Party Transaction [Line Items]        
Fees receivable   $ 640,567 $ 560,552  
Benefit pursuant to tax receivable agreement   (8,237) (43,894) $ (1,209)
Payable pursuant to tax receivable agreement   75,899 115,087  
Investment Advisor | Sponsored Funds        
Related Party Transaction [Line Items]        
Revenue   569,088 538,457 592,985
Fees receivable   68,577 67,598  
LTBP Trust        
Related Party Transaction [Line Items]        
Benefit pursuant to tax receivable agreement   8,237 43,894 $ 1,209
Payable pursuant to tax receivable agreement   $ 75,899 $ 115,087  
LTBP Trust | Tax Receivable Agreement        
Related Party Transaction [Line Items]        
Amount of cash savings in income or franchise tax that would be realized as a result of increases in tax basis and certain other tax benefits related to the amended and restated tax receivable agreement (as a percent) 45.00%      
Cash tax saving that may arise from tax basis increases attributable to payments under the amended and restated tax receivable agreement (as a percent) 85.00%