CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (USD $)	Total	Preferred Stock, Series A 8.50% Cumulative Redeemable - Liquidation Preference $25.00 per Share:	Common Stock, Par Value $.01:	Additional Paid-in Capital, in excess of Par:	Accumulated Deficit:	Accumulated Other Comprehensive Income:
Balance at Dec. 31, 2011	$ 2,497,760,000	$ 38,000	$ 3,561,000	$ 2,795,925,000	$ (243,061,000)	$ (58,703,000)
Balance (in shares) at Dec. 31, 2011		3,840,000	356,112,000
Increase (Decrease) in Stockholders' Equity
Issuance of common stock, net of expenses	3,795,000		8,000	3,787,000
Issuance of common stock, net of expenses (in shares)			754,000
Equity-based compensation expense	2,581,000			2,581,000
Net income	159,479,000				159,479,000
Dividends declared on common stock	(167,883,000)				(167,883,000)
Dividends declared on preferred stock	(4,080,000)				(4,080,000)
Dividends attributable to DERs	(738,000)				(738,000)
Change in unrealized gains on MBS, net	240,516,000					240,516,000
Change in unrealized losses on derivative hedging instruments	24,371,000					24,371,000
Balance at Jun. 30, 2012	$ 2,755,801,000	$ 38,000	$ 3,569,000	$ 2,802,293,000	$ (256,283,000)	$ 206,184,000
Balance (in shares) at Jun. 30, 2012		3,840,000	356,866,000