CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
CASH FLOWS FROM OPERATING ACTIVITIES:
Consolidated net income	$ 24,341	$ 14,153	$ 21,440	$ 9,034
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Gains on originated mortgage servicing rights			(63,798)	(54,789)
Depreciation and amortization	44,576	41,463	129,430	122,327
Provision (benefit) for credit losses on the financial guarantee liability			(1,317)	3,405
Provision (reversal) for doubtful accounts			(371)	(1,330)
Equity-based compensation and allocation of net income to limited partnership units and FPUs			125,678	84,805
Employee loan amortization and other non-cash compensation expense			91,772	78,689
Deferred tax benefit			(136)	0
Non-cash changes in acquisition related earn-outs			(4,033)	381
Unrealized (gains) losses on loans held for sale			(29,937)	550
Income from an equity method investment		(5,700)	0	(14,221)
Unrealized (gains) losses on marketable securities			(38)	548
Unrealized losses (gains) on non-marketable investments			(48)	0
Loan originations—loans held for sale			(5,291,238)	(5,253,690)
Loan sales—loans held for sale			4,822,339	4,775,065
Other			(8,988)	11,236
Consolidated net income (loss), adjusted for non-cash and non-operating items			(209,245)	(237,990)
Changes in operating assets and liabilities:
Receivables, net			79,990	23,444
Loans, forgivable loans and other receivables from employees and partners, net			(209,771)	(209,591)
Right-of-use assets			56,290	52,835
Other assets			(45,242)	(13,440)
Accrued compensation			(98,091)	(90,918)
Right-of-use liability			(64,320)	(32,123)
Accounts payable, accrued expenses and other liabilities			78,475	28,841
Payables to related parties			(599)	(6,996)
Net cash used in operating activities			(412,513)	(485,938)
CASH FLOWS FROM INVESTING ACTIVITIES:
Payments for acquisitions, net of cash acquired and proceeds from divestitures			0	(99,885)
Proceeds from the exercise of redemption option			0	105,501	$ 105,500
Purchase of non-marketable investments	0	0	(312)	0
Payments for intangible assets			(1,500)	0
Purchases of fixed assets			(25,490)	(43,821)
Net cash used in investing activities			(27,302)	(38,205)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from warehouse facilities			5,291,238	5,253,690
Principal payments on warehouse facilities			(4,804,069)	(4,781,639)
Borrowing of debt			835,000	250,000
Repayment of debt			(610,000)	(195,000)
Purchase of limited partnership interests			(11,284)	0
Treasury stock repurchases			(182,219)	(32,270)
Earnings and tax distributions to limited partnership interests and other noncontrolling interests			(32,325)	(31,655)
Dividends to stockholders			(15,526)	(15,686)
Payments on acquisition earn-outs			0	(983)
Deferred financing costs			(5,368)	(1,991)
Net cash provided by financing activities			465,447	444,466
Net increase (decrease) in cash and cash equivalents and restricted cash			25,632	(79,677)
Cash and cash equivalents and restricted cash at beginning of period			258,706	312,952	312,952
Cash and cash equivalents and restricted cash at end of period	$ 284,338	$ 233,275	284,338	233,275	$ 258,706
Cash paid during the period for:
Interest			29,767	24,359
Taxes			46,601	45,971
Supplemental disclosure of non-cash operating, investing and financing activities:
Right-of-use assets and liabilities			$ 42,005	$ 57,688