Related Parties - Schedule of Payable to Employees and Related Parties (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Related Party Transactions [Abstract]
Amount Due to U.K. Members	$ 30,188	$ 20,221
Amounts Due Pursuant to Tax Receivable Agreements	10,417	10,465
Amounts Due to Employees for the Sale of Outstanding Class R Interests of Private Capital Advisory L.P.	0	27,710
Other	630	480
Payable to Employees and Related Parties	41,235	58,876
Amounts Due Pursuant to Tax Receivable Agreements	61,169	70,209
Other Noncurrent Liabilities
Related Party Transaction [Line Items]
Noncontrolling Interest, Purchase of Interest, Contingent Consideration, Liability, Noncurrent	$ 5,036	$ 20,587