Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Assets
Cash	$ 265,232	$ 271,773
Cash collateral posted to counterparties	17,162	79,471
Agency Securities, available for sale, at fair value (including pledged securities of $7,094,766 at December 31, 2017 and $6,298,811 at December 31, 2016)	7,478,966	6,511,164
Derivatives, at fair value	37,211	9,837
Accrued interest receivable	22,165	18,452
Prepaid and other	1,600	1,667
Subordinated loans due from BUCKLER Securities LLC	105,000	0
Total Assets	8,928,917	7,978,161
Liabilities:
Repurchase agreements	7,555,917	6,818,453
Cash collateral posted by counterparties	29,593	3,774
Derivatives, at fair value	7,948	49,655
Accrued interest payable- repurchase agreements	6,452	6,934
Accounts payable and other accrued expenses	2,956	7,280
Total Liabilities	7,602,866	6,886,096
Commitments and contingencies (Note 10)
Preferred stock, $0.001 par value, 50,000 shares authorized;
Common stock, $0.001 par value, 125,000 shares authorized, 41,877 and 36,723 shares issued and outstanding at December 31, 2017 and December 31, 2016	42	37
Additional paid-in capital	2,709,335	2,560,242
Accumulated deficit	(1,363,223)	(1,439,088)
Accumulated other comprehensive loss	(20,111)	(29,134)
Total Stockholders’ Equity	1,326,051	1,092,065
Total Liabilities and Stockholders’ Equity	8,928,917	7,978,161
Series A Preferred Stock
Preferred stock, $0.001 par value, 50,000 shares authorized;
Preferred stock	2	2
Series B Preferred Stock
Preferred stock, $0.001 par value, 50,000 shares authorized;
Preferred stock	6	6
Credit Risk and Non-Agency Securities
Assets
Securities, trading, at fair value	975,829	1,052,170
Interest-Only Securities
Assets
Securities, trading, at fair value	$ 25,752	$ 33,627