CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Interest income
Residential mortgage investments	$ 232,435	$ 212,694	$ 215,989
Other	964	637	341
Interest income	233,399	213,331	216,330
Interest expense
Secured borrowings	(138,757)	(107,653)	(85,521)
Unsecured borrowings	(7,610)	(7,833)	(8,454)
Interest expense	(146,367)	(115,486)	(93,975)
Net interest income (expense)	87,032	97,845	122,355
Other revenue (expense)
Compensation-related expense	(4,915)	(11,749)	(10,200)
Other general and administrative expense	(4,689)	(4,682)	(4,798)
Miscellaneous other revenue (expense)	2,161	1,459	968
Operating expenses	(7,443)	(14,972)	(14,030)
Net income	79,589	82,873	108,325
Net income available to common stockholders
Net income	79,589	82,873	108,325
Less preferred stock dividends	(17,442)	(15,372)	(15,160)
Net income available to common stockholders	$ 62,147	$ 67,501	$ 93,165
Basic and diluted net income per common share	$ 0.65	$ 0.70	$ 0.97