CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME/(LOSS) (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income/(loss)	$ (25,928)	$ (100,367)	$ 46,856	$ (183,273)
Other Comprehensive Income/(Loss):
Unrealized losses on securities available-for-sale	(6,805)	(4,937)	(7,921)	(9,914)
Changes in fair value of financing agreements at fair value due to changes in instrument-specific credit risk	0	0	0	1,255
Other Comprehensive (Loss)	(6,805)	(4,937)	(7,921)	(8,659)
Comprehensive income/(loss) before preferred stock dividends	(32,733)	(105,304)	38,935	(191,932)
Dividends required on preferred stock	(8,218)	(8,219)	(16,437)	(16,438)
Comprehensive Income/(Loss) Available to Common Stock and Participating Securities	$ (40,951)	$ (113,523)	$ 22,498	$ (208,370)