Comprehensive Income (Components Of Accumulated OCI, Net Of Tax) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ 413,812	$ 407,118
Current Period Change	(27,684)	(4,395)
Balance	389,461	408,122
Unrealized Holding Gains (Losses) On Available-For-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	1,955
Current Period Change	(28,756)
Balance	(26,801)
Unrealized Actuarial Loss On Pension Plan [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(3,056)
Balance	(3,056)
Unrealized Loss On Derivative Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(1,212)
Current Period Change	1,072
Balance	(140)
Accumulated Other Comprehensive Loss [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(2,313)	3,570
Current Period Change	(27,684)	(4,395)
Balance	$ (29,997)	$ (825)