Revenues from Contracts with Customers - Disaggregation of Revenues Recognized from Contracts with Customers (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disaggregation Of Revenue [Line Items]
Revenues from Contracts with Customers	$ 1,146,276	$ 1,026,559	$ 986,416
Advisory Fees
Disaggregation Of Revenue [Line Items]
Revenues from Contracts with Customers	1,026,646	823,496	762,723
Placement Fees
Disaggregation Of Revenue [Line Items]
Revenues from Contracts with Customers	102,611	192,890	216,692
Interest Income from Placement Fees and Other
Disaggregation Of Revenue [Line Items]
Revenues from Contracts with Customers	$ 17,019	$ 10,173	$ 7,001