Earnings Per Common Share (Computation Of Basic And Diluted Earnings Per Common Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022
Earnings Per Share [Abstract]
Net (loss) income	$ (14,038)	$ 82,964	$ 84,040	$ 78,591	$ 91,157
Weighted average number of common shares outstanding - basic (in shares)	156,383				129,159
Effect of potentially dilutive common shares (in shares)	0				534
Weighted average number of shares outstanding, diluted (in shares)	156,383				129,693
(Loss) earnings per common share:
Basic (in dollars per share)	$ (0.09)				$ 0.71
Diluted (in dollars per share)	$ (0.09)				$ 0.70