Employee Benefit Plans (Components Of Net Periodic Benefit Cost) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 171	$ 154
Interest cost	359	381
Expected return on plan assets	(638)	(655)
Amortization of prior service cost	(1)	(1)
Amortization of Net Loss	111	63
Net periodic benefit cost (benefit)	2	(58)
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	8	3
Interest cost	118	145
Amortization of prior service cost	26	25
Amortization of Net Loss	37	88
Net periodic benefit cost (benefit)	$ 189	$ 261