Consolidated Statements of Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Interest income	$ 39,957	$ 25,190
Interest expense	26,276	11,595
Net interest income	13,681	13,595
(Loss) gain on derivative instruments, net	61,697	(38,354)
Loss on sale of investments, net	0	(3,775)
Fair value adjustments, net	13	(29)
Other operating (expense) income, net	(231)	(253)
General and administrative expenses:
Compensation and benefits	(1,898)	(1,962)
Other general and administrative	(2,056)	(1,681)
Net income	(52,214)	44,307
Preferred stock dividends	3,059	2,940
Net (loss) income to common shareholders	(55,273)	41,367
Other comprehensive income:
Unrealized (loss) gain on available-for-sale investments, net	86,632	(49,189)
Reclassification adjustment for loss on sale of investments, net	0	3,775
Reclassification adjustment for de-designated cash flow hedges	(165)	(48)
Total other comprehensive (loss) income	86,467	(45,462)
Comprehensive (loss) income to common shareholders	$ 31,194	$ (4,095)
Net (loss) income per common share-basic and diluted	$ (0.81)	$ 0.74
Weighted average common shares-basic and diluted	68,435	55,871