CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Agency MBS pledged to counterparties at fair value	$ 3,707,062	$ 4,694,731
Series B Cumulative Convertible Preferred Stock, par value	$ 0.01	$ 0.01
Series B Cumulative Convertible Preferred Stock, liquidating preference per share	$ 25.00	$ 25.00
Series B Cumulative Convertible Preferred Stock, liquidating preference	$ 25,241	$ 25,241
Series B Cumulative Convertible Preferred Stock, shares issued	1,010,000	1,010,000
Series B Cumulative Convertible Preferred Stock, shares outstanding	1,010,000	1,010,000
Cumulative Preferred Stock, par value	$ 0.01
Common Stock, par value	$ 0.01	$ 0.01
Common Stock, authorized	200,000,000	200,000,000
Common Stock, issued	95,718,402	99,078,000
Common Stock, outstanding	95,718,402	98,944,000
Total assets	$ 5,395,776	$ 6,636,340
Accrued interest receivable	16,203	17,525
Total liabilities	4,740,754	5,934,189
Accrued interest payable	11,850	13,443
Non-Agency MBS
Agency MBS pledged to counterparties at fair value	$ 525,169	$ 596,831
Series A Preferred Stock
Cumulative Preferred Stock, par value	$ 0.01	$ 0.01
Cumulative Preferred Stock, liquidating preference per share	$ 25.00	$ 25.00
Cumulative Preferred Stock, liquidating preference	$ 47,984	$ 47,984
Cumulative Preferred Stock, shares issued	1,919,378	1,919,000
Cumulative Preferred Stock, shares outstanding	1,919,378	1,919,000
Series C Preferred Stock
Cumulative Preferred Stock, par value	$ 0.01	$ 0.01
Cumulative Preferred Stock, liquidating preference per share	$ 25.00	$ 25.00
Cumulative Preferred Stock, liquidating preference	$ 12,146	$ 10,848
Cumulative Preferred Stock, shares issued	485,842	434,000
Cumulative Preferred Stock, shares outstanding	485,842	434,000
Variable Interest Entities Primary Beneficiary
Total assets	$ 747,000	$ 972,000
Accrued interest receivable	2,500	3,100
Total liabilities	731,000	918,000
Accrued interest payable	$ 2,400	$ 2,900