Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities
Net income (loss)	$ (18,703)	$ (49,022)
Adjustments to reconcile net loss to net cash provided by operating activities:
Provision for loan losses	118,495	94,294
Depreciation and amortization	7,623	6,887
Amortization of debt issuance costs	2,777	3,733
Stock-based compensation	9,521	11,423
Amortization of net deferred origination costs	36,419	25,837
Changes in servicing rights, at fair value	1,440	4,074
Gain on sales of loans	(1,890)	(12,594)
Unfunded loan commitment reserve	227	(405)
Gain on extinguishment of debt	(312)	(940)
Changes in operating assets and liabilities:
Other assets	2,106	(1,221)
Accounts payable	(2,353)	1,386
Interest payable	91	826
Accrued expenses and other liabilities	(7,641)	(844)
Originations of loans held for sale	(44,489)	(238,077)
Capitalized net deferred origination costs of loans held for sale	(1,128)	(8,074)
Proceeds from sale of loans held for sale	45,921	246,051
Principal repayments of loans held for sale	1,039	6,189
Net cash provided by operating activities	149,143	89,523
Cash flows from investing activities
Change in restricted cash	(12,297)	(4,364)
Purchases of property, equipment and software	(1,129)	(6,337)
Capitalized internal-use software	(2,226)	(3,702)
Originations of term loans and lines of credit, excluding rollovers into new originations	(1,302,889)	(1,333,192)
Proceeds from sale of loans held for investment	12,396	57,238
Payments of net deferred origination costs	(32,747)	(32,909)
Principal repayments of term loans and lines of credit	1,220,673	881,077
Other	0	(201)
Purchase of loans	(13,730)	(6,672)
Net cash used in investing activities	(131,949)	(449,062)
Cash flows from financing activities
Investments by noncontrolling interests	3,443	0
Purchase of treasury shares	(864)	(576)
Proceeds from exercise of stock options and warrants	490	131
Issuance of common stock under employee stock purchase plan	1,838	2,606
Payments of debt issuance costs	(3,228)	(4,655)
Distribution to noncontrolling interest	(1,000)	0
Net cash provided by (used in) financing activities	(33,280)	285,236
Effect of exchange rate changes on cash and cash equivalents	824	429
Net decrease in cash and cash equivalents	(15,262)	(73,874)
Cash and cash equivalents at beginning of period	79,554	159,822
Cash and cash equivalents at end of period	64,292	85,948
Supplemental disclosure of other cash flow information
Cash paid for interest	31,467	16,282
Supplemental disclosures of non-cash investing and financing activities
Stock-based compensation included in capitalized internal-use software	154	1,025
Loans transferred from loans held for sale to loans held for investment	0	861
Unpaid principal balance of term loans rolled into new originations	220,925	200,637
Funding debt
Cash flows from financing activities
Proceeds from the issuance of funding debt	133,318	606,051
Repayments of funding debt principal	(156,477)	(328,321)
Corporate debt
Cash flows from financing activities
Proceeds from the issuance of funding debt	24,200	10,000
Repayments of funding debt principal	$ (35,000)	$ 0