Acquisitions - Summary of Fair Value of the Net Assets Acquired as of the Acquisition Date (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Sep. 30, 2021	Dec. 31, 2020	Dec. 14, 2020	Oct. 02, 2020	Apr. 01, 2020	Dec. 31, 2019
LIABILITIES
Goodwill	$ 418,701		$ 369,982				$ 97,323
Five Points Capital
ASSETS
Cash and cash equivalents						$ 111
Accounts receivable						295
Due from related parties						27
Prepaid expenses and other assets						13
Property and equipment						87
Right-of-use assets						339
Intangible assets						23,960
Total assets acquired						24,832
LIABILITIES
Accounts payable						358
Accrued expenses						390
Long-term lease obligation						339
Deferred tax liability						5,524
Total liabilities assumed						6,611
Net identifiable assets acquired						18,221
Goodwill						48,630
Net assets acquired						$ 66,851
TrueBridge Capital
ASSETS
Cash and cash equivalents					$ 6,537
Accounts receivable					14
Due from related parties					55
Prepaid expenses and other assets					60
Property and equipment					1,061
Right-of-use assets					1,627
Intangible assets					43,600
Total assets acquired					52,954
LIABILITIES
Accounts payable					20
Accrued expenses					323
Deferred revenues					6,491
Long-term lease obligation					2,031
Deferred tax liability					5,518
Total liabilities assumed					14,383
Net identifiable assets acquired					38,571
Goodwill					150,567
Net assets acquired					$ 189,138
Enhanced
ASSETS
Cash and cash equivalents				$ 2,752
Restricted cash				254
Accounts receivable				3,424
Due from related parties				257
Prepaid expenses and other assets				2,099
Investment in partnership				2,158
Intangible assets				36,820
Total assets acquired				47,764
LIABILITIES
Accrued expenses				551
Other liabilities				288
Deferred revenues				2,110
Due to related parties				2,059
Debt obligations				1,693
Deferred tax liability				2,551
Total liabilities assumed				9,252
Net identifiable assets acquired				38,512
Goodwill				72,507
Net assets acquired				$ 111,019
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