Acquisitions - Summary of Fair Value of the Net Assets Acquired as of the Acquisition Date (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Oct. 13, 2022	Dec. 31, 2021	Sep. 30, 2021	Dec. 31, 2020
LIABILITIES
Lease liabilities	$ 18,558		$ 15,700
Goodwill	506,638		418,701		$ 369,982
Bonaccord
ASSETS
Prepaid expenses and other assets				$ 9
Investment in partnership				1,396
Intangible assets				12,940
Total assets acquired				14,345
LIABILITIES
Accrued expenses				919
Total liabilities assumed				919
Net identifiable assets acquired				13,426
Goodwill				42,936
Net assets acquired				$ 56,362
Westech Investment Advisors LLC
ASSETS
Cash and cash equivalents		$ 8,807
Accounts receivable		12,632
Prepaid expenses and other assets		378
Property and equipment		138
Right-of-use assets		2,904
Intangible assets		49,700
Total assets acquired	$ 5,200	74,559	$ 0		$ 0
LIABILITIES
Accounts payable and accrued expenses		13,555
Lease liabilities		2,957
Total liabilities assumed		16,512
Net identifiable assets acquired		58,047
Goodwill		87,948
Net assets acquired		$ 145,995