Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Cash flows from operating activities
Net loss	$ (595)	$ (14,771)
Adjustments to reconcile net loss to net cash provided by operating activities:
Provision for loan losses	38,626	29,652
Depreciation and amortization	2,943	1,755
Amortization of debt issuance costs	1,332	1,482
Stock-based compensation	4,358	637
Warrant liability fair value adjustment	0	8,826
Amortization of net deferred origination costs	18,317	12,322
Gain on sales of loans	(18,389)	(2,927)
Provision for unfunded loan commitment	807	71
Common stock warrant issuance	0	64
Gain on extinguishment of debt	(48)	0
Changes in operating assets and liabilities:
Other assets	(8,823)	(941)
Accounts payable	2,946	512
Interest payable	(156)	(530)
Accrued expenses and other liabilities	7,352	1,437
Originations of loans held for sale	(196,119)	(53,677)
Payments of net deferred origination costs of loans held for sale	(7,954)	(3,317)
Proceeds from sale of loans held for sale	204,025	59,648
Repayments of term loans held for sale	1,664	591
Net cash provided by operating activities	50,286	40,834
Cash flows from investing activities
Change in restricted cash	1,179	(165)
Purchases of property, equipment and software	(3,896)	(4,813)
Capitalized internal-use software	(2,254)	(1,248)
Originations of term loans and lines of credit, excluding rollovers into new originations	(511,726)	(359,793)
Proceeds from sale of loans held for investment	58,901	0
Payments of net deferred origination costs	(17,332)	(15,628)
Principal repayments of term loans and lines of credit	411,628	219,749
Net cash used in investing activities	(63,500)	(161,898)
Cash flows from financing activities
Proceeds from exercise of stock options	187	355
Payments of initial public offering costs	(1,845)	0
Purchase of shares for treasury	(184)	0
Investment by noncontrolling interest	7,069	0
Proceeds from the issuance of redeemable convertible preferred stock	0	77,000
Proceeds from the issuance of funding debt	110,728	340,926
Payments of debt issuance costs	(1,133)	(3,993)
Net cash (used in) provided by financing activities	(27,404)	135,377
Effect of exchange rate changes on cash and cash equivalents	(123)	0
Net increase (decrease) in cash and cash equivalents	(40,741)	14,313
Cash and cash equivalents at beginning of period	220,433	4,670
Cash and cash equivalents at end of period	179,692	18,983
Supplemental disclosure of other cash flow information
Cash paid for interest	8,087	7,493
Supplemental disclosures of non-cash investing and financing activities
Stock-based compensation included in capitalized internal-use software	360	73
Unpaid principal balance of term loans rolled into new originations	127,174	61,947
Accretion of dividends on redeemable convertible preferred stock	0	6,200
Funding Debt [Member]
Cash flows from financing activities
Repayment of funding debt principal	(130,226)	(266,911)
Corporate Debt [Member]
Cash flows from financing activities
Repayment of funding debt principal	$ (12,000)	$ (12,000)