Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flows from operating activities
Net income before noncontrolling interests	$ 77,305	$ 62,315
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	(127,724)	(97,491)
Change in the fair value of premiums and origination fees	(17,728)	2,650
Amortization and depreciation	80,824	73,788
Provision for credit losses	166	576
Other operating activities, net	1,253,069	(32,619)
Net cash provided by (used in) operating activities	1,265,912	9,219
Cash flows from investing activities
Capital expenditures	(1,821)	(1,281)
Net cash paid to increase ownership interest in a previously held equity method investment	(1,058)
Acquisitions, net of cash received		(12,767)
Purchase of mortgage servicing rights	(42,705)
Originations of loans held for investment	(218,958)	(144,950)
Principal collected on loans held for investment	187,820	22,920
Net cash provided by (used in) investing activities	(76,722)	(136,078)
Cash flows from financing activities
Borrowings (repayments) of warehouse notes payable, net	(1,239,677)	28,976
Borrowings of interim warehouse notes payable	148,478	110,829
Repayments of interim warehouse notes payable	(138,898)	(17,190)
Repayments of note payable	(829)	(4,543)
Proceeds from issuance of common stock	3,439	5,677
Repurchase of common stock	(12,374)	(50,062)
Debt issuance costs	(2,425)	(850)
Distributions to noncontrolling interests	(5)
Tax benefit from vesting of equity awards		831
Net cash provided by (used in) financing activities	(1,242,291)	73,668
Net increase (decrease) in cash and cash equivalents	(53,101)	(53,191)
Cash and cash equivalents at beginning of period	136,988	113,354
Cash and cash equivalents at end of period	83,887	60,163
Supplemental Disclosure of Cash Flow Information:
Cash paid to third parties for interest	28,592	24,813
Cash paid for income taxes	$ 23,061	$ 27,038