EPS Calculation (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Basic (Loss)/Earnings per Share:
Net (loss)/income	$ (100,367)	$ (82,906)	$ 66,714	$ 85,522	$ (183,273)	$ 152,236
Dividends declared on preferred stock	(8,219)		(8,219)		(16,438)	(16,438)
Dividends, dividend equivalents and undistributed earnings allocated to participating securities	(174)		(205)		(315)	(479)
Net (loss)/income to available common stockholders - basic	$ (108,760)		$ 58,290		$ (200,026)	$ 135,319
Basic weighted average common shares outstanding (in shares)	102,515		110,383		104,531	111,577
Basic (Loss)/Earnings per Share (in dollars per share)	$ (1.06)		$ 0.53		$ (1.91)	$ 1.21
Diluted (Loss)/Earnings per Share:
Net (loss)/income to available common stockholders - basic	$ (108,760)		$ 58,290		$ (200,026)	$ 135,319
Interest expense on Convertible Senior Notes	0		0		0	7,823
Dividends, dividend equivalents and undistributed earnings allocated to participating securities	0		205		0	479
Net (loss)/income available to common stockholders - diluted	$ (108,760)		$ 58,495		$ (200,026)	$ 143,621
Basic weighted average common shares outstanding (in shares)	102,515		110,383		104,531	111,577
Effect of assumed Convertible Senior Notes conversion to common shares (in shares)	0		0		0	7,230
Unvested and vested restricted stock units (in shares)	0		657		0	442
Diluted weighted average common shares outstanding (in shares)	102,515		111,040		104,531	119,249
Diluted (Loss)/Earnings per Common Share (in dollars per share)	$ (1.06)		$ 0.53		$ (1.91)	$ 1.20
Anti-dilutive securities excluded from diluted earnings per share calculations (in shares)					1,500
RSUs
Diluted (Loss)/Earnings per Share:
Weighted average grant date fair value (in dollars per share)	$ 17.07				$ 17.07