Employee Benefits And Deferred Compensation Plans (Schedule Of Assumptions Used, Pension Plan) (Details) - Pension [Member]	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Discount rate for projected benefit obligation	5.22%	2.77%	2.42%
Discounted rate for net periodic pension cost	2.77%	2.42%	3.20%
Expected long-term rate of return on plan assets	5.50%	5.50%	5.50%