Income Taxes (Components Of Income Tax Expense Recorded Directly To Stockholders Equity) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Unrealized gain (loss) on securities available for sale	$ 69,972	$ (382,697)	$ (80,211)
Components of income Tax Recorded Directly to Equity, Change in Fair Value of Cash Flow Hedge	(6,017)	(6,446)	(6,040)
Accumulated pension (benefit) loss	1,197	1,161	1,484
Income tax expense (benefit) allocated to stockholders’ equity	$ 65,152	$ (387,982)	$ (84,767)