Acquisitions - Additional Information (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021
Business Acquisition [Line Items]
Goodwill		$ 418,690	$ 418,701
Bonaccord
Business Acquisition [Line Items]
Business acquisition effective date	Sep. 30, 2021
Expenses related to business acquisition	$ 500
Purchase consideration	56,362
Contingent consideration	17,435
Amount of term loan credit facility	35,000
Contingent consideration obligation		$ 19,200
Payments to acquire business	38,927
Goodwill	42,936
Business acquisition, goodwill, expected tax deductible amount	42,900
Net identifiable assets acquired	$ 13,426
Bonaccord | Restricted Stock Units (RSUs) [Member]
Business Acquisition [Line Items]
Number of restricted stock units allocated and granted to employee	1,113,637	0
Bonaccord | Third Party
Business Acquisition [Line Items]
Percentage of net management fee earnings rights	15.00%	15.00%
Bonaccord | Maximum
Business Acquisition [Line Items]
Contingent consideration	$ 20,000
Bonaccord | Professional Fees
Business Acquisition [Line Items]
Expenses related to business acquisition		$ 0		$ 0
Hark
Business Acquisition [Line Items]
Business acquisition effective date	Sep. 30, 2021
Purchase consideration	$ 7,200
Contingent consideration obligation	2,200
Payments to acquire business	5,000
Goodwill	4,700
Net identifiable assets acquired	$ 2,500
Hark | Restricted Stock Units (RSUs) [Member]
Business Acquisition [Line Items]
Number of restricted stock units allocated and granted to employee	95,455		0
Hark | Maximum
Business Acquisition [Line Items]
Contingent consideration obligation	$ 5,400