Pension Plans And Other Postretirement Benefits (Components Of Net Periodic Benefit Costs) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1,004	$ 1,209	$ 3,291	$ 4,101
Interest cost	3,564	3,164	10,589	9,494
Expected return on plan assets	(4,495)	(3,692)	(13,105)	(11,078)
Amortization of prior service cost	69	57	208	171
Amortization of actuarial loss	628	2,073	1,628	6,105
Curtailment loss	84		84
Net periodic benefit cost	854	2,811	2,695	8,793
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	283	338	878	1,188
Interest cost	722	622	2,181	1,956
Expected return on plan assets	(686)	(574)	(2,057)	(1,694)
Amortization of prior service cost	(68)	(73)	(210)	(221)
Amortization of actuarial loss	59	395	200	1,085
Net periodic benefit cost	$ 310	$ 708	$ 992	$ 2,314