Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2020	Jun. 30, 2019
Cash Flows from Operating Activities:
Consolidated net loss		$ (126,558)	$ (30,532)
Adjustments to reconcile consolidated net loss to net cash (used for) provided by operating activities:
Net fair value adjustments		108,116	70,703
Change in fair value of loan servicing assets and liabilities		34,664	23,044
Stock-based compensation, net		32,333	38,803
Depreciation and amortization		29,484	30,156
Gain on sales of loans		(15,985)	(29,038)
Other, net		6,861	13,106
Purchase of loans held for sale		(1,915,138)	(3,147,234)
Principal payments received on loans held for sale		152,811	129,131
Proceeds from whole loan sales and Structured Program transactions, net of underwriting fees and costs		1,727,554	3,062,348
Net change in operating assets and liabilities:
Accrued interest receivable, net		(7,897)	(7,046)
Other assets		37,261	3,410
Accounts payable		(7,746)	1,701
Accrued interest payable		(1,480)	(4,482)
Accrued expenses and other liabilities		(57,195)	(20,060)
Change in payable to investors	[1]	(51,452)	(87,809)
Net cash (used for) provided by operating activities		(54,367)	46,201
Cash Flows from Investing Activities:
Purchases of loans		(160,002)	(360,002)
Principal payments received on loans		389,802	662,565
Proceeds from recoveries and sales of charged-off loans		23,103	28,322
Purchases of securities available for sale		(47,443)	(72,537)
Proceeds from sales, maturities, redemptions and paydowns of securities available for sale		62,293	75,940
Proceeds from paydowns of asset-backed securities related to Structured Program transactions		67,048	39,569
Other investing activities		200	243
Purchases of property, equipment and software, net		(19,583)	(27,619)
Net cash provided by investing activities		315,418	346,481
Cash Flows from Financing Activities:
Proceeds from issuance of notes and certificates		159,894	359,846
Repayments of secured borrowings		(11,731)	(35,670)
Principal payments on and retirements of notes and certificates		(375,723)	(642,951)
Payments on notes, certificates, and secured borrowings from recoveries/sales of related charged-off loans		(22,450)	(27,547)
Principal payments on securitization notes		(28,398)	(45,440)
Proceeds from issuance of notes and certificates from Structured Program transactions		186,190	0
Proceeds from credit facilities and securities sold under repurchase agreements		1,050,551	1,014,953
Principal payments on credit facilities and securities sold under repurchase agreements		(1,158,096)	(1,149,453)
Payment for debt issuance costs		(264)	(1,334)
Deemed dividend paid to preferred stockholder		(50,204)	0
Other financing activities		(25,203)	(8,397)
Net cash provided by (used for) financing activities		(275,434)	(535,993)
Net Decrease in Cash, Cash Equivalents and Restricted Cash		(14,383)	(143,311)
Cash, Cash Equivalents and Restricted Cash, Beginning of Period		487,122	644,058
Cash, Cash Equivalents and Restricted Cash, End of Period		472,739	500,747
Supplemental Cash Flow Information:
Cash paid for interest		38,791	148,038
Cash paid for operating leases included in the measurement of lease liabilities		7,951	8,258
Non-cash investing activity:
Accruals for property, equipment and software		1,023	5,330
Net securities retained from Structured Program transactions		43,883	92,938
Non-cash investing and financing activity:
Transfer of whole loans to redeem certificates		17,414	0
Non-cash financing activity:
Exchange of common stock for preferred stock		207,244	0
Derecognition of payable to securitization note and residual certificate holders held in consolidated VIE		$ 0	$ 213,326

[1] Change in payable to investors was previously presented as cash flows from financing activities. Prior period amounts have been reclassified to conform to the current period presentation.