CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Interest income:
Residential mortgage investments	$ 53,309	$ 50,341	$ 112,809	$ 108,986
Other	128	99	320	193
Interest income	53,437	50,440	113,129	109,179
Interest expense:
Secured borrowings	(27,014)	(20,098)	(53,596)	(39,312)
Unsecured borrowings	(1,976)	(2,122)	(3,953)	(4,245)
Interest expense	(28,990)	(22,220)	(57,549)	(43,557)
Net interest income (expense)	24,447	28,220	55,580	65,622
Other revenue (expense):
Compensation-related expense	(2,042)	(2,160)	(5,266)	(4,509)
Other general and administrative expense	(1,157)	(1,170)	(2,326)	(2,319)
Miscellaneous other revenue	382	54	995	107
Operating expenses	(2,817)	(3,276)	(6,597)	(6,721)
Net income	21,630	24,944	48,983	58,901
Net income available to common stockholders:
Net income	21,630	24,944	48,983	58,901
Less preferred stock dividends	(3,843)	(3,788)	(7,669)	(7,530)
Net income available to common stockholders	$ 17,787	$ 21,156	$ 41,314	$ 51,371
Net income per common share:
Basic and diluted (in dollars per share)	$ 0.19	$ 0.22	$ 0.43	$ 0.54
Weighted average common shares outstanding:
Basic (in shares)	95,648	95,501	95,631	95,485
Diluted (in shares)	95,786	95,689	95,766	95,682
Cash dividends declared per share:
Common (in dollars per share)	$ 0.23	$ 0.31	$ 0.49	$ 0.62
Series E Preferred [Member]
Cash dividends declared per share:
Series E Preferred (in dollars per share)	$ 0.47	$ 0.47	$ 0.94	$ 0.94