Employee Benefit Plans And Other Postretirement Benefits (Schedule Of Net Periodic Benefit Cost Expected To Be Recognized) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Prior service cost (credit)	$ (1,751)
Net actuarial loss	36,946
Amounts expected to be recognized in net periodic benefit cost, net of tax	35,195
Pension and SERPA Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Prior service cost (credit)	274
Net actuarial loss	34,445
Amounts expected to be recognized in net periodic benefit cost, net of tax	34,719
Postretirement Healthcare Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Prior service cost (credit)	(2,025)
Net actuarial loss	2,501
Amounts expected to be recognized in net periodic benefit cost, net of tax	$ 476