Pension Plans And Other Postretirement Benefits (Schedule Of Amounts Recognized In Accumulated Other Comprehensive Income (Loss) Net Of Tax) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial net (loss) gain	$ (6,148)	$ (3,824)
Net prior service credit	(122)	(178)
Income tax expense (benefit)	(2,235)	(2,235)
Total	(4,035)	(1,767)
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial net (loss) gain	(264)	(168)
Net prior service credit	310	507
Income tax expense (benefit)	8	8
Total	$ 38	$ 331