Pension And Postretirement Obligations (Schedule Of Amounts Recognized In Balance Sheet) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Pension and postretirement benefit obligations-current	$ 1,089	$ 622
Pension and postretirement benefit obligations-long term	8,095	9,915
Pension Benefits [Member]
Pension and postretirement benefit obligations-current	(954)	(502)
Pension and postretirement benefit obligations-long term	(6,511)	(6,789)
Total	(7,465)	(7,291)
Postretirement Benefits [Member]
Pension and postretirement benefit obligations-current	(135)	(120)
Pension and postretirement benefit obligations-long term	(1,299)	(2,855)
Total	$ (1,434)	$ (2,975)