Employee Benefit Plans (Changes In Plan Assets And Benefit Obligations Recognized In Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plan Disclosure [Line Items]
Amortization of net loss	$ (724)	$ (1,270)	$ (1,445)
Total recognized in other comprehensive income	3,903	3,454
Defined Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial gain (loss)	3,101	2,212
Amortization of net loss	724	1,270
Total recognized in other comprehensive income	3,825	3,482
Postretirement Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial gain (loss)	(61)	(12)
Amortization of net loss	20	18
Amortization of prior service credit	(3)	(34)
Total recognized in other comprehensive income	$ (78)	$ (28)