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, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023
Earnings Per Share [Abstract]
Net income (loss)	$ 124,080	$ 93,531	$ 135,845	$ 133,377	$ (14,038)
Weighted average number of common shares outstanding - basic (in shares)	208,260				156,383
Effect of potentially dilutive common shares (in shares)	696				0
Weighted average number of shares outstanding, diluted (in shares)	208,956				156,383
Earnings (loss) per common share:
Basic (in dollars per share)	$ 0.60				$ (0.09)
Diluted (in dollars per share)	$ 0.59				$ (0.09)