Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Interest income	$ 13,892	$ 39,822
Interest expense	(1,633)	(22,101)
Net interest income	12,259	17,721
Gain on sale of investments, net	4,697	84,783
Loss on investments, net	(980)	(372)
Gain (loss) on derivative instruments, net	(107,801)	195,567
Other operating expense, net	(380)	(423)
General and administrative expenses:
Compensation and benefits	(3,096)	(2,163)
Other general and administrative	(2,372)	(2,458)
Net income (loss)	117,929	(98,479)
Preferred stock dividends	(2,559)	(3,841)
Preferred stock redemption charge	2,987	3,914
Net income (loss) to common shareholders	112,383	(106,234)
Other comprehensive income:
Unrealized (loss) gain on available-for-sale investments, net	(60,459)	157,755
Reclassification adjustment for realized gain on sale of available-for-sale investments, net	(4,697)	(84,783)
Total other comprehensive (loss) income	(65,156)	72,972
Comprehensive income (loss) to common shareholders	$ 47,227	$ (33,262)
Net income (loss) per common share-basic and diluted	$ 4.20	$ (4.63)
Weighted average common shares-basic and diluted	26,788,693	22,963,084