Acquisitions - Additional Information (Details) - USD ($) $ in Thousands		12 Months Ended
	Oct. 13, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 14, 2020
Business Acquisition [Line Items]
Aggregate membership units		3,825,842	4,948,733
Professional fees		$ 12,668	$ 12,856	$ 11,508
Purchase consideration		5,800
Contingent consideration		13,100
Contingent consideration obligation		16,200	14,300
Goodwill		506,038	506,638	418,701
Revolving Credit Facility
Business Acquisition [Line Items]
Revolver facility		90,700	80,900
Enhanced
Business Acquisition [Line Items]
Percentage of business acquisition					100.00%
Bonaccord
Business Acquisition [Line Items]
Contingent consideration obligation		$ 6,700
Bonaccord | Third Party
Business Acquisition [Line Items]
Percentage of net management fee earnings rights		15.00%
Hark
Business Acquisition [Line Items]
Purchase consideration		$ 5,400
Hark | Maximum
Business Acquisition [Line Items]
Contingent consideration		5,400
Westech Investment Advisors LLC
Business Acquisition [Line Items]
Business acquisition effective date	Oct. 13, 2022
Expenses related to business acquisition		3,200
Aggregate membership units	3,916,666
Purchase consideration	$ 145,995
Payments to acquire business	105,262
Goodwill	87,348
Business acquisition, goodwill, expected tax deductible amount	87,300
Net identifiable assets acquired	$ 58,647
Westech Investment Advisors LLC | Professional Fees
Business Acquisition [Line Items]
Expenses related to business acquisition		$ 0	$ 3,200	$ 0