Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016
Restricted cash	[1]	$ 242,570	$ 177,810
Member Loans at fair value	[1],[2]	2,932,325	4,295,121
Loans held for investment by the Company at fair value (1) (2)	[1],[2]	361,230	16,863
Loans held for sale by the Company at fair value (1)	[1]	235,825	9,048
Accrued interest receivable from consolidated Trust	[1]	33,822	40,299
Other assets (1)	[1]	156,278	69,644
Assets		4,640,831	5,562,631
Accrued interest payable from consolidated Trust	[1]	32,992	43,574
Accrued expenses and other liabilities (1)	[1]	228,380	85,619
Notes, certificates and secured borrowings at fair value (1)	[1]	2,954,768	4,320,895
Payable to securitization note and residual certificate holders (includes $1,479 and $0 at fair value, respectively) (1)	[1]	312,123	0
Warehouse notes payable (1)	[1]	32,100	0
Liabilities		3,713,074	4,586,861
Payable to securitization residual certificate holders, fair value		$ 1,479	$ 0
Treasury stock (shares)		2,282,700	2,282,700
Common stock, par value ($ per share)		$ 0.01	$ 0.01
Common stock, shares authorized (shares)		900,000,000	900,000,000
Common stock, shares issued (shares)		419,756,546	400,642,472
Common stock, shares outstanding (shares)		417,473,846	397,979,772
Variable Interest Entity, Primary Beneficiary [Member]
Restricted cash		$ 34,370	$ 0
Member Loans at fair value		1,202,260	2,600,422
Loans held for investment by the Company at fair value (1) (2)		350,699	0
Loans held for sale by the Company at fair value (1)		60,812	0
Accrued interest receivable from consolidated Trust		15,602	24,037
Other assets (1)		6,324	0
Assets		1,670,067	2,624,459
Accrued interest payable from consolidated Trust		14,789	26,839
Accrued expenses and other liabilities (1)		52	0
Notes, certificates and secured borrowings at fair value (1)		1,210,349	2,616,023
Payable to securitization note and residual certificate holders (includes $1,479 and $0 at fair value, respectively) (1)		312,123	0
Warehouse notes payable (1)		32,100	0
Liabilities		$ 1,569,413	$ 2,642,862

[1] Includes amounts in consolidated variable interest entities (VIEs) presented separately in the table below.

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