Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities
Net income (loss)	$ 168,682	$ 422,978	$ 218,438
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Bad debt expense (benefit)	2,630	2,026	2,544
Depreciation and amortization	7,975	7,242	4,708
Equity-based compensation	128,938	167,938	133,623
Deferred tax provision	26,786	22,862	38,997
Gain on equity method investment	(2,903)	(30,091)
Other	12,100	(6,251)	(2,488)
Changes in assets and liabilities:
Accounts receivable	(20,320)	26,941	(46,698)
Accrued and other receivables	22,026	(14,721)	(983)
Prepaid expenses and other assets	(14,987)	(3,396)	1,236
Deferred compensation	(3,762)	505	(221)
Compensation payable	(255,291)	282,872	57,003
Accounts payable, accrued expenses and other liabilities	(45,043)	52,874	21,461
Deferred revenue	3,227	1,845	(347)
Dividends received	2,936	3,356	1,942
Net cash provided by (used in) operating activities	32,994	936,980	429,215
Cash flows from investing activities
Purchases of investments	(334,743)	(486,124)	(390,586)
Proceeds from sales of investments	332,517	456,302	391,494
Note payments received from (issued to) employees	(3,000)	70	(200)
Purchases of equipment and leasehold improvements	(5,957)	(16,426)	(40,659)
Proceeds from partial sale of equity method investment		29,164
Net cash provided by (used in) investing activities	(11,183)	(17,014)	(39,951)
Cash flows from financing activities
Payments for dividends and tax distributions	(174,651)	(479,963)	(282,920)
Payments for treasury stock purchases	(147,537)	(104,150)	(44,334)
Payments under tax receivable agreement	(6,613)	(18,628)	(36,459)
Proceeds from exercise of stock options			11,923
Other proceeds	1,900	200
Net cash provided by (used in) financing activities	(326,901)	(602,541)	(351,790)
Effect of exchange rate fluctuations on cash, cash equivalents, and restricted cash	(8,385)	305	(2,762)
Net increase (decrease) in cash, cash equivalents, and restricted cash	(313,475)	317,730	34,712
Cash, cash equivalents, and restricted cash, beginning of period	521,014	203,284	168,572
Cash, cash equivalents, and restricted cash, end of period	207,539	521,014	203,284
Cash paid during the period for:
Income taxes, net	76,422	55,189	(305)
Other non-cash activity
Class A Partnership Units or other equity converted into Class A Common Stock	7,478	26,964	14,964
Dividends in kind	20,804	63,374	41,144
Non-cash settlement of accounts receivable	$ 10,802	18,550
Cumulative effect adjustment upon adoption of ASU 2016-13			364
Settlement of partnership units not yet paid		118
Forfeiture of fully-vested Group LP units or other equity units		$ 25	$ 96