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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						6 Months Ended
	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2025	Jun. 30, 2024
Earnings Per Share [Abstract]
Net income	$ 152,423	$ 86,609	$ 143,269	$ 146,182	$ 120,144	$ 124,080	$ 239,032	$ 244,224
Weighted average number of common shares outstanding - basic (in shares)	209,125				208,498		208,964	208,379
Effect of potentially dilutive common shares (in shares)	850				513		1,001	620
Weighted average number of shares outstanding, diluted (in shares)	209,975				209,011		209,965	208,999
Earnings per common share:
Basic (in dollars per share)	$ 0.73				$ 0.58		$ 1.14	$ 1.17
Diluted (in dollars per share)	$ 0.73				$ 0.57		$ 1.14	$ 1.17

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