CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Interest income:
Residential mortgage investments	$ 65,202	$ 56,103	$ 134,340	$ 110,944
Other	305	238	713	391
Interest income	65,507	56,341	135,053	111,335
Interest expense:
Secured borrowings	(48,241)	(33,850)	(93,262)	(62,090)
Unsecured borrowings	(1,900)	(1,900)	(3,791)	(3,791)
Interest expense	(50,141)	(35,750)	(97,053)	(65,881)
Net interest income (expense)	15,366	20,591	38,000	45,454
Other revenue (expense):
Compensation-related expense	(1,560)	(1,833)	(3,608)	(2,948)
Other general and administrative expense	(899)	(1,276)	(2,136)	(2,338)
Miscellaneous other revenue	81	67	152	82
Operating expenses	(2,378)	(3,042)	(5,592)	(5,204)
Net income	12,988	17,549	32,408	40,250
Net income available to common stockholders:
Net income	12,988	17,549	32,408	40,250
Less preferred stock dividends	(4,842)	(4,018)	(9,684)	(7,882)
Net income available to common stockholders	$ 8,146	$ 13,531	$ 22,724	$ 32,368
Net income per common share:
Basic and diluted	$ 0.09	$ 0.14	$ 0.24	$ 0.34
Weighted average common shares outstanding:
Basic (in shares)	92,001	95,756	92,709	95,755
Diluted (in shares)	92,121	95,916	92,810	95,895
Cash dividends declared per share:
Common (in dollars per share)	$ 0.14	$ 0.21	$ 0.30	$ 0.42
Series E Preferred [Member]
Cash dividends declared per share:
Series E preferred (in dollars per share)	$ 0.47	$ 0.47	$ 0.94	$ 0.94