Net Periodic Benefit Costs (Schedule Of Net Periodic Benefit Cost) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Pension [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 44	$ 41	$ 133	$ 122
Expected return on plan assets	(88)	(89)	(264)	(266)
Amortization of the net loss	24	24	71	72
Net periodic (benefit) cost	(20)	(24)	(60)	(72)
Supplemental Executive Retirement Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	33	37	99	112
Interest cost	31	25	93	75
Amortization of prior service cost	8	7	24	23
Amortization of the net loss	44	71	132	213
Net periodic (benefit) cost	$ 116	$ 140	$ 348	$ 423