CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (UNAUDITED) (USD $) In Thousands, except Share data, unless otherwise specified		Total	Preferred Stock Series B 7.50% Cumulative Redeemable - Liquidation Preference $25.00 per Share		Common Stock		Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income
Balance at Dec. 31, 2014		$ 3,203,272	$ 80		$ 3,701		$ 3,013,634	$ (568,596)	$ 754,453
Balance (in shares) at Dec. 31, 2014			8,000,000		370,084,000
Increase (Decrease) in Stockholders' Equity
Cumulative effect adjustment on adoption of revised accounting standard for repurchase agreement financing		4,537						(4,537)	4,537
Net income		82,173						82,173	0
Issuance of common stock, net of expenses	[1]	312	0		0		312	0	0
Issuance of common stock, net of expenses (in shares)	[1]		0		61,000
Repurchase of shares of common stock	[1]	(151)	0		0		(151)	0	0
Repurchase of shares of common stock (in shares)		0	0	[1]	(11,000)	[1]
Equity based compensation expense		912					912	0	0
Accrued dividends attributable to stock-based awards		(113)					(113)	0	0
Dividends declared on common stock		(74,072)					0	(74,072)	0
Dividends declared on preferred stock		(3,750)					0	(3,750)	0
Dividends attributable to DERs		(249)					0	(249)	0
Change in unrealized gains on MBS and CRT securities, net		32,205					0	0	32,205
Change in unrealized losses on derivative hedging instruments, net		(32,367)					0	0	(32,367)
Balance at Mar. 31, 2015		$ 3,208,172	$ 80		$ 3,701		$ 3,014,594	$ (569,031)	$ 758,828
Balance (in shares) at Mar. 31, 2015			8,000,000		370,134,000

[1] For the three months ended March 31, 2015, includes approximately $87,000 (11,074 shares) surrendered for tax purposes related to equity-based compensation awards.