CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Consolidated net income	$ 37,910	$ 163,255	$ 100,420	$ 793,025
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Gain on originated mortgage servicing rights			(98,378)	(98,820)
Depreciation and amortization	44,359	28,883	118,758	80,804
Nasdaq earn-out recognition			0	(1,108,012)
Provision/(reversals) for/of credit losses on the financial guarantee liability			588	(5,226)
Provision for doubtful accounts			5,538	4,597
Equity-based compensation and allocation of net income to limited partnership units and FPUs			102,974	315,742
Employee loan amortization			60,974	53,993
Deferred tax (benefit) provision			(94)	1,084
Non-cash changes in acquisition related earn-outs			1,173	973
Unrealized (gains) on loans held for sale			36,271	(15,810)
Unrealized (gains) on investments			0	(27,825)
Realized loss (gain) on marketable securities			7,470	(16,472)
Unrealized loss (gain) on marketable securities			80,413	(41,485)
Unrealized loss (gains) on non-marketable investments			13,944	(2,531)
Change in valuation of derivative asset			0	12,183
Loan originations—loans held for sale			(5,803,501)	(5,997,086)
Loan sales—loans held for sale			5,858,850	5,899,509
Other			1,650	2,670
Consolidated net income, adjusted for non-cash and non-operating items			487,050	(148,687)
Changes in operating assets and liabilities:
Receivables, net			59,518	(135,300)
Loans, forgivable loans and other receivables from employees and partners			(100,591)	(49,469)
Right of use asset			(1,743)	5,318
Receivable from related parties			8,262	0
Other assets			(53,238)	62,812
Accrued compensation			(102,376)	(119,304)
Right of use liability			11,713	(3,360)
Accounts payable, accrued expenses and other liabilities			(40,793)	64,482
Payables to related parties			(3,067)	(3,049)
Net cash provided by operating activities			264,735	(326,557)
CASH FLOWS FROM INVESTING ACTIVITIES:
Payments for acquisitions, net of cash acquired			(64,247)	(58,933)
Proceeds from the sale of marketable securities			437,820	495,703
Purchase of marketable securities			(32)	0
Purchase of non-marketable investments			(2,723)	(1,500)
Purchases of fixed assets			(40,015)	(11,282)
Net cash provided by investing activities			330,803	423,988
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from warehouse facilities			5,803,501	5,997,086
Principal payments on warehouse facilities			(5,837,842)	(5,873,958)
Proceeds from the sale of limited partnership interests			0	4,025
Borrowing of debt			0	55,000
Repayment of debt			0	(195,000)
Repurchase agreements and securities loaned			(140,007)	106,722
Redemption and repurchase of limited partnership interests			0	(2,321)
Treasury stock repurchases			(281,193)	(139,334)
Earnings and tax distributions to limited partnership interests and other noncontrolling interests			(74,713)	(14,370)
Dividends to stockholders			(12,753)	(5,696)
Payments on acquisition earn-outs			(6,453)	(41,329)
Deferred financing costs			(5,040)	(1,450)
Net cash used in financing activities			(554,500)	(110,625)
Net increase in cash and cash equivalents and restricted cash			41,038	(13,194)
Cash and cash equivalents and restricted cash at beginning of period			266,500	258,399	$ 258,399
Cash and cash equivalents and restricted cash at end of period	$ 307,538	$ 245,205	307,538	245,205	$ 266,500
Cash paid during the period for:
Interest			20,642	19,157
Taxes			86,513	38,139
Supplemental disclosure of non-cash operating, investing and financing activities:
Right-of-use assets and liabilities			$ 87,449	$ 511,056