Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Earnings Per Share [Abstract]
Net earnings (loss)		$ 423,613	$ 606,959	$ (1,237,574)
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic	[1]	(7,474)	(10,248)	(1,782)
Undistributed Earnings (Loss) Available to Common Shareholders, Basic		396,800	596,711	(1,239,356)
Net Income (Loss) Available to Common Stockholders, Basic		$ 404,274	$ 606,959	$ (1,237,574)
Weighted-average basic shares and unvested restricted stock outstanding		120,071	119,349	118,463
Less: weighted-average unvested restricted stock outstanding		(2,442)	(2,255)	(1,610)
Weighted-average basic shares outstanding		117,629	117,094	116,853
Basic income per share (usd per share)		$ 3.37	$ 5.10	$ (10.61)
Net earnings (loss) allocated to common shares		$ 396,800	$ 596,711	$ (1,239,356)
Diluted income per share (usd per share)		$ 3.37	$ 5.10	$ (10.61)
Preferred Stock Dividends, Income Statement Impact		$ (19,339)	$ 0	$ 0

[1] Represents cash dividends paid to holders of unvested restricted stock, net of forfeitures, plus undistributed earnings amounts available to holders of unvested restricted stock, if any