CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Interest income:
Residential mortgage investments	$ 57,073	$ 49,845	$ 168,017	$ 162,654
Other	366	174	757	494
Interest income	57,439	50,019	168,774	163,148
Interest expense:
Secured borrowings	(36,655)	(26,636)	(98,745)	(80,232)
Unsecured borrowings	(1,910)	(1,970)	(5,701)	(5,923)
Interest expense	(38,565)	(28,606)	(104,446)	(86,155)
Net interest income (expense)	18,874	21,413	64,328	76,993
Other revenue (expense):
Compensation-related expense	(1,073)	(4,039)	(4,021)	(9,305)
Other general and administrative expense	(1,097)	(1,239)	(3,435)	(3,565)
Miscellaneous other revenue	48	305	130	1,300
Operating expenses	(2,122)	(4,973)	(7,326)	(11,570)
Net income	16,752	16,440	57,002	65,423
Net income available to common stockholders:
Net income	16,752	16,440	57,002	65,423
Less preferred stock dividends	(4,718)	(3,846)	(12,600)	(11,515)
Net income available to common stockholders	$ 12,034	$ 12,594	$ 44,402	$ 53,908
Net income per common share:
Basic and diluted net income per common share	$ 0.13	$ 0.13	$ 0.46	$ 0.56
Weighted average common shares outstanding:
Basic (in shares)	95,792	95,678	95,768	95,647
Diluted (in shares)	95,923	95,866	95,905	95,799
Cash dividends declared per share:
Common (in dollars per share)	$ 0.19	$ 0.23	$ 0.61	$ 0.72
Series E Preferred [Member]
Cash dividends declared per share:
Series E preferred (in dollars per share)	$ 0.47	$ 0.47	$ 1.41	$ 1.41