Pension And Postretirement Obligations (Schedule Of Amounts Recognized In Balance Sheet) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Pension and postretirement benefit obligations-current	$ 267	$ 7,351	$ 7,722	$ 7,827	$ 1,089
Pension and postretirement benefit obligations-long term	6,007				8,095
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension and postretirement benefit obligations-current	(267)				(954)
Pension and postretirement benefit obligations-long term	(5,110)				(6,511)
Total	(5,377)				(7,465)
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension and postretirement benefit obligations-current					(135)
Pension and postretirement benefit obligations-long term	(636)				(1,299)
Total	$ (636)				$ (1,434)