Employee Benefits And Deferred Compensation Plans (Schedule Of Net Periodic Benefit Cost, Employee Pension Plan) (Details) - Pension Benefits [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Interest cost	$ 237	$ 179	$ 165
Expected return on plan assets	(259)	(353)	(356)
Net amortization and deferral	97	97	100
Settlement cost	114
Net periodic cost	$ 189	$ (77)	$ (91)