CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Interest Income:
Residential whole loans held at carrying value	$ 8,690	$ 4,436
Other interest-earning investments	1,699	0
Cash and cash equivalent investments	355	140
Interest Income	117,257	117,417
Interest Expense:
Repurchase agreements and other advances	48,339	45,395
Senior Notes and other interest expense	2,010	2,205
Interest Expense	50,349	47,600
Net Interest Income	66,908	69,817
Other-Than-Temporary Impairments:
Total other-than-temporary impairment losses	(63)	0
Portion of loss reclassed from other comprehensive income	(351)	0
Net Impairment Losses Recognized in Earnings	(414)	0
Other Income, net:
Net gain on residential whole loans held at fair value	13,773	12,348
Net gain on sales of MBS and U.S. Treasury securities	9,708	9,745
Other, net	4,512	619
Other Income, net	27,993	22,712
Operating and Other Expense:
Compensation and benefits	7,793	7,407
Other general and administrative expense	4,225	3,918
Loan servicing and other related operating expenses	4,409	3,134
Operating and Other Expense	16,427	14,459
Net Income	78,060	78,070
Less Preferred Stock Dividends	3,750	3,750
Net Income Available to Common Stock and Participating Securities	$ 74,310	$ 74,320
Earnings per Common Share - Basic and Diluted (in dollars per share)	$ 0.20	$ 0.20
Dividends Declared per Share of Common Stock (in dollars per share)	$ 0.20	$ 0.20
Agency MBS
Interest Income:
Securities	$ 17,894	$ 23,997
Non-Agency MBS | Non-Agency MBS
Interest Income:
Securities	80,163	80,305
Non-Agency MBS | Non-Agency MBS Transferred to Consolidated VIEs
Interest Income:
Securities	2,080	5,847
CRT securities
Interest Income:
Securities	$ 6,376	$ 2,692