Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities
Net income before noncontrolling interests	$ 77,572	$ 47,444
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	(90,204)	(79,496)
Change in the fair value of premiums and origination fees	1,921	(11,954)
Amortization and depreciation	65,198	51,580
Provision (benefit) for credit losses	(225)	(117)
Other operating activities, net	365,842	339,053
Net cash provided by (used in) operating activities	420,104	346,510
Cash flows from investing activities
Capital expenditures	(2,049)	(777)
Funding of preferred equity investments	(11,385)	(6,409)
Net cash paid to increase ownership interest in a previously held equity method investment		(1,058)
Acquisitions, net of cash received	(15,000)
Purchase of mortgage servicing rights		(43,374)
Originations of loans held for investment	(167,079)	(141,842)
Principal collected on loans held for investment	100,980	133,120
Net cash provided by (used in) investing activities	(94,533)	(60,340)
Cash flows from financing activities
Borrowings (repayments) of warehouse notes payable, net	(414,266)	(333,615)
Borrowings of interim warehouse notes payable	128,660	98,863
Repayments of interim warehouse notes payable	(75,615)	(97,873)
Repayments of note payable	(552)	(552)
Proceeds from issuance of common stock	2,885	3,291
Repurchase of common stock	(17,590)	(11,979)
Debt issuance costs	(1,053)	(1,689)
Distributions to noncontrolling interests		(5)
Net cash provided by (used in) financing activities	(377,531)	(343,559)
Net increase (decrease) in cash, cash equivalents, restricted cash, and restricted cash equivalents (NOTE 2)	(51,960)	(57,389)
Cash, cash equivalents, restricted cash, and restricted cash equivalents at beginning of period	213,467	214,484
Total of cash, cash equivalents, restricted cash, and restricted cash equivalents at end of period	161,507	157,095
Supplemental Disclosure of Cash Flow Information:
Cash paid to third parties for interest	22,513	18,008
Cash paid for income taxes	$ 27,748	$ 16,426