Employee Benefits (Schedule Of Amounts Recognized In The Consolidated Balance Sheet) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Current liabilities	$ 0	$ 0
Noncurrent liabilities	(8,710)	(22,988)
Net amount recognized	(8,710)	(22,988)
Post-Retirement Healthcare Benefit Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Current liabilities	(1,835)	(1,753)
Noncurrent liabilities	(18,123)	(19,630)
Net amount recognized	$ (19,958)	$ (21,383)