Benefit Plans (Schedule Of Plan's Funded Status And Assumptions Used) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Benefit Plans [Abstract]
Benefit obligation at beginning of measurement year	$ 22,511	$ 20,779
Service cost	419	332
Interest cost	374	525
Actuarial (gain) loss	(1,784)	2,275
Benefits paid	(2,518)	(1,400)
Benefit obligation at end of measurement year	19,002	22,511
Fair value of plan assets at beginning of measurement year	19,462	18,135
Actual return on plan assets net of expenses	1,518	1,727
Employer contribution		1,000
Benefits paid	(2,518)	(1,400)
Fair value of plan assets at end of measurement year	18,462	19,462
Funded status of projected benefit obligation	$ (540)	$ (3,049)
Assumptions used to determine benefit obligations: Discount rate	3.71%	2.33%
Assumptions used to determine benefit obligations: Rate of compensation increase	5.00%	4.00%
Assumptions used to determine net periodic benefit cost: Expected long-term return on plan assets	6.00%	6.25%