Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Cash Flows from Operating Activities:
Consolidated net loss		$ (31,180)	$ (29,844)
Adjustments to reconcile consolidated net loss to net cash provided by (used for) operating activities:
Net fair value adjustments	[1]	28,713	1,417
Change in fair value of loan servicing liabilities		(358)	(809)
Change in fair value of loan servicing assets		5,606	4,047
Stock-based compensation, net		17,801	19,498
Depreciation and amortization		11,701	10,254
(Gain) Loss on sales of loans		(13,116)	(5,043)
Other, net		1,582	352
Purchase of loans held for sale		(1,597,816)	(1,176,154)
Principal payments received on loans held for sale		58,943	892
Proceeds from sales of whole loans		1,348,092	1,172,161
Purchase of loans held for sale by consolidated VIE		(270,770)	0
Proceeds from sale of securities by consolidated VIE, net of underwriting fees and costs		437,969	0
Net change in operating assets and liabilities:
Accrued interest receivable, net		5,961	4,655
Other assets		57,461	(6,452)
Due from related parties		(96)	71
Accounts payable		(6,058)	(3,833)
Accrued interest payable		(7,482)	(5,152)
Accrued expenses and other liabilities		(33,254)	(3,178)
Net cash provided by (used for) operating activities		13,699	(17,118)
Cash Flows from Investing Activities:
Purchases of loans		(293,460)	(524,412)
Principal payments received on loans		504,618	640,006
Proceeds from recoveries and sales of charged-off loans		17,658	10,889
Proceeds from sales of whole loans		0	2,118
Purchases of securities available for sale		(32,346)	(26,430)
Proceeds from sales, maturities, redemptions and paydowns of securities available for sale		40,476	66,817
Proceeds from paydowns of asset-backed securities related to Company- sponsored securitizations and CLUB Certificate transactions		6,339	0
Purchases of property, equipment and software, net		(13,607)	(7,908)
Net cash provided by investing activities		229,678	161,080
Cash Flows from Financing Activities:
Change in payable to investors		(35,222)	(29,753)
Proceeds from issuance of notes and certificates		292,461	523,305
Repayments of secured borrowings		(47,545)	0
Principal payments on and retirements of notes and certificates		(456,157)	(641,103)
Payments on notes and certificates from recoveries/sales of related charged-off loans		(17,459)	(10,790)
Principal payments on securitization notes		(31,729)	0
Proceeds from revolving credit facilities		274,900	0
Principal payments on revolving credit facilities		(233,000)	0
Payment for debt issuance costs		(1,119)	0
Proceeds from stock option exercises and other		185	4,308
Return of capital to noncontrolling interests in consolidated VIE		(1,055)	0
Dividends paid to noncontrolling interests in consolidated VIE		(30)	0
Net cash used for financing activities		(255,770)	(154,033)
Net Decrease in Cash, Cash Equivalents and Restricted Cash		(12,393)	(10,071)
Cash, Cash Equivalents and Restricted Cash, Beginning of Period		644,289	693,412
Cash, Cash Equivalents and Restricted Cash, End of Period		631,896	683,341
Supplemental Cash Flow Information:
Cash paid for interest		116,273	163,692
Accruals for property, equipment and software		956	905
Beneficial interests retained from securitization and CLUB Certificate transactions		$ 26,639	$ 0

[1] Prior period amounts have been reclassified to conform to the current period presentation. See “Notes to Condensed Consolidated Financial Statements – Note 1. Basis of Presentation” for additional information.