Income Taxes (Schedule Of Accrued Liability For Unrecognized Tax Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Unrecognized tax benefits at beginning of year	$ 1,331	$ 1,372
Gross increases – tax positions in prior period	15	3
Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions	(8)	(51)
Gross increases – current-period tax positions	222	266
Lapse of statute of limitations	(284)	(259)
Unrecognized tax benefits at end of year	$ 1,276	$ 1,331