CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME/(LOSS) (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net (loss)/income	$ (100,367)	$ 66,714	$ (183,273)	$ 152,236
Other Comprehensive (Loss):
Unrealized (losses) on securities available-for-sale	(4,937)	(9,589)	(9,914)	(13,444)
Changes in fair value of financing agreements at fair value due to changes in instrument-specific credit risk	0	491	1,255	726
Other Comprehensive (Loss)	(4,937)	(9,098)	(8,659)	(12,718)
Comprehensive (loss)/income before preferred stock dividends	(105,304)	57,616	(191,932)	139,518
Dividends required on preferred stock	(8,219)	(8,219)	(16,438)	(16,438)
Comprehensive (Loss)/Income Available to Common Stock and Participating Securities	$ (113,523)	$ 49,397	$ (208,370)	$ 123,080