Employee Benefits And Deferred Compensation Plans (Schedule Of Assumptions Used, Employee Pension Plan) (Details) (Pension [Member])	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Pension [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate for projected benefit obligation	3.83%	4.78%	3.88%
Discounted rate for net periodic pension cost	4.78%	3.88%	4.46%
Rate of increase in compensation levels
Expected long-term rate of return on plan assets	7.50%	7.50%	7.50%