Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities
Net income before noncontrolling interests	$ 109,664	$ 86,206
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	(158,369)	(82,209)
Change in the fair value of premiums and origination fees	(25,459)	938
Amortization and depreciation	82,079	75,284
Provision for credit losses	28,546	3,636
Originations of loans held for sale	(10,281,562)	(7,913,982)
Sales of loans to third parties	9,381,412	7,696,034
Other operating activities, net	41,046	(25,111)
Net cash provided by (used in) operating activities	(822,643)	(159,204)
Cash flows from investing activities
Capital expenditures	(1,539)	(3,392)
Purchase of equity-method investments	(850)
Purchase of pledged available-for-sale ("AFS") securities	(14,155)	(7,562)
Proceeds from prepayment of pledged debt AFS securities	4,739
Distributions from (investments in) joint ventures, net	(6,470)	(18,518)
Acquisitions, net of cash acquired	(46,784)	(7,180)
Originations of loans held for investment		(83,402)
Principal collected on loans held for investment upon payoff	139,030	150,761
Net cash provided by (used in) investing activities	73,971	30,707
Cash flows from financing activities
Borrowings (repayments) of warehouse notes payable, net	1,009,302	129,412
Borrowings of interim warehouse notes payable	33,127	54,757
Repayments of interim warehouse notes payable	(84,959)	(32,264)
Repayments of note payable	(1,489)	(1,500)
Proceeds from issuance of common stock	6,565	4,188
Repurchase of common stock	(27,142)	(25,915)
Purchase of noncontrolling interests	(5,216)
Cash dividends paid	(22,641)	(18,630)
Payment of contingent consideration	(1,641)	(6,450)
Debt issuance costs	(1,932)	(1,729)
Net cash provided by (used in) financing activities	903,974	101,869
Net increase in cash, cash equivalents, restricted cash, and restricted cash equivalents (NOTE 2)	155,302	(26,628)
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	291,868	93,720
Supplemental Disclosure of Cash Flow Information:
Cash paid to third parties for interest	24,237	36,003
Cash paid for income taxes	$ 1,479	$ 24,865