Employee Benefit Plans (Components Of Net Periodic Benefit Cost) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 593	$ 588
Interest cost	1,422	1,500
Expected return on plan assets	(2,543)	(2,453)
Amortization of prior service cost	(3)	(3)
Amortization of net loss	437	83
Net periodic benefit cost (Credit)	$ (94)	$ (285)
Discount Rate	4.00%	4.75%
Expected Return on Plan Assets	7.25%	7.25%
Rate of Compensation Increase	4.50%	4.50%
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ (64)	$ 22
Interest cost	427	521
Amortization of prior service cost	105	100
Amortization of net loss	57	80
Net periodic benefit cost (Credit)	$ 525	$ 723
Discount Rate	4.00%	4.75%