Employee Benefit Plans (Components Of Net Periodic Benefit Cost) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 588	$ 671	$ 649
Interest cost	1,500	1,335	1,426
Expected return on plan assets	(2,453)	(2,229)	(1,987)
Amortization of prior service cost	(3)	(3)	(3)
Amortization of Net Loss	83	888	778
Net periodic benefit cost (benefit)	(285)	662	863
Discount Rate	4.75%	3.75%	4.50%
Expected Return on Plan Assets	7.25%	7.75%	7.75%
Rate of Compensation Increase	4.50%	4.50%	4.50%
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	22	16	(6)
Interest cost	521	531	471
Amortization of prior service cost	100	100	(12)
Amortization of Net Loss	80	365	201
Net periodic benefit cost (benefit)	$ 723	$ 1,012	$ 654
Discount Rate	4.75%	3.75%	4.50%