Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands		Mar. 31, 2018	Dec. 31, 2017
Restricted cash	[1]	$ 226,818	$ 242,570
Loans held for investment at fair value	[1]	2,635,413	2,932,325
Loans held for investment by the Company at fair value	[1]	317,458	361,230
Loans held for sale by the Company at fair value (1)	[1]	248,344	235,825
Accrued interest receivable	[1]	27,012	33,822
Other assets	[1]	106,870	156,278
Total assets of consolidated variable interest entities		4,259,115	4,640,831
Accrued interest payable	[1]	25,510	32,992
Accrued expenses and other liabilities	[1]	196,517	228,380
Notes, certificates and secured borrowings at fair value (1)	[1]	2,655,417	2,954,768
Payable to securitization note and residual certificate holders	[1]	280,915	312,123
Payable to revolving credit facilities	[1]	74,000	32,100
Total liabilities of consolidated variable interest entities		$ 3,343,995	$ 3,713,074
Common stock, par value ($ per share)		$ 0.01	$ 0.01
Common stock, shares authorized		900,000,000	900,000,000
Common stock, shares issued		421,890,329	419,756,546
Common stock, shares outstanding		419,607,629	417,473,846
Treasury stock, shares		2,282,700	2,282,700
Payable to securitization residual certificate holders		$ 1,354	$ 1,479
Consolidated VIEs
Restricted cash		45,998	34,370
Loans held for investment at fair value		1,043,223	1,202,260
Loans held for investment by the Company at fair value		307,173	350,699
Loans held for sale by the Company at fair value (1)		86,156	60,812
Accrued interest receivable		12,387	15,602
Other assets		3,410	6,324
Total assets of consolidated variable interest entities		1,498,347	1,670,067
Accrued interest payable		11,196	14,789
Accrued expenses and other liabilities		836	52
Notes, certificates and secured borrowings at fair value (1)		1,050,091	1,210,349
Payable to securitization note and residual certificate holders		280,915	312,123
Payable to revolving credit facilities		49,000	32,100
Total liabilities of consolidated variable interest entities		$ 1,392,038	$ 1,569,413

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