CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME/(LOSS) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Net Income	$ 74,766	$ 79,286	$ 159,479	$ 162,151
Other Comprehensive Income:
Unrealized (loss)/gain on Agency MBS, net	(11,170)	46,456	(14,328)	37,713
Unrealized (loss)/gain on Non-Agency MBS, net	(6,057)	(159,657)	256,545	(141,551)
Reclassification adjustment for MBS sales included in net income			(2,901)
Reclassification adjustment for other-than-temporary impairments included in net income	280	2,392	1,200	2,392
Unrealized gain/(loss) on derivative hedging instruments, net	12,280	(10,933)	24,371	14,738
Other Comprehensive Income	(4,667)	(121,742)	264,887	(86,708)
Comprehensive income/(loss) before preferred stock dividends	70,099	(42,456)	424,366	75,443
Dividends declared on preferred stock	(2,040)	(2,040)	(4,080)	(4,080)
Comprehensive Income/(Loss) Available to Common Stock and Participating Securities	$ 68,059	$ (44,496)	$ 420,286	$ 71,363