CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	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	$ 38	$ 3,561	$ 2,795,925	$ (243,061)	$ (58,703)
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	4,398		9	4,389
Issuance of common stock, net of expenses (in shares)			901,000
Equity-based compensation expense	4,374			4,374
Net income	237,620				237,620
Dividends declared on common stock	(242,970)				(242,970)
Dividends declared on preferred stock	(6,120)				(6,120)
Dividends attributable to DERs	(1,060)				(1,060)
Change in unrealized gains on MBS, net	709,127					709,127
Change in unrealized losses on derivative hedging instruments	36,025					36,025
Balance at Sep. 30, 2012	$ 3,239,154	$ 38	$ 3,570	$ 2,804,688	$ (255,591)	$ 686,449
Balance (in shares) at Sep. 30, 2012		3,840,000	357,013,000