Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities
Net income before noncontrolling interests	$ 47,605	$ 44,060
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Gains attributable to the fair value of future servicing rights, net of guaranty obligation	(68,000)	(40,938)
Change in the fair value of premiums and origination fees	(22,414)	2,955
Amortization and depreciation	39,762	37,903
Provision for credit losses	23,643	2,675
Originations of loans held for sale	(3,168,168)	(3,773,443)
Sales of loans to third parties	2,846,631	3,622,404
Other operating activities, net	8,315	(30,978)
Net cash provided by (used in) operating activities	(292,626)	(135,362)
Cash flows from investing activities
Capital expenditures	(778)	(1,461)
Purchase of equity-method investments	(563)
Purchase of pledged available-for-sale ("AFS") securities	(5,000)	(4,078)
Proceeds from prepayment of pledged debt AFS securities	3,711
Distributions from (investments in) joint ventures, net	(6,455)	(1,679)
Acquisitions, net of cash acquired	(43,784)	(7,180)
Originations of loans held for investment		(33,362)
Principal collected on loans held for investment upon payoff	88,779	60,145
Net cash provided by (used in) investing activities	35,910	12,385
Cash flows from financing activities
Borrowings (repayments) of warehouse notes payable, net	419,763	151,814
Borrowings of interim warehouse notes payable	29,898	21,976
Repayments of interim warehouse notes payable	(49,850)
Repayments of note payable	(744)	(750)
Proceeds from issuance of common stock	6,369	4,187
Repurchase of common stock	(26,737)	(24,159)
Cash dividends paid	(11,347)	(9,319)
Payment of contingent consideration	(1,641)	(6,450)
Debt issuance costs	(964)	(824)
Net cash provided by (used in) financing activities	364,747	136,475
Net increase in cash, cash equivalents, restricted cash, and restricted cash equivalents (NOTE 2)	108,031	13,498
Cash, cash equivalents, restricted cash, and restricted cash equivalents at beginning of period	136,566	120,348
Total of cash, cash equivalents, restricted cash, and restricted cash equivalents at end of period	244,597	133,846
Supplemental Disclosure of Cash Flow Information:
Cash paid to third parties for interest	11,207	17,785
Cash paid for income taxes	$ 121	$ 372