Pension And Postretirement Obligations (Schedule Of Amounts Recognized In Other Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Pension Benefits [Member]
Actuarial net (loss) gain	$ (3,863)	$ (3,967)
Net prior service credit	(150)	(187)
Total	(4,013)	(4,154)
Postretirement Benefits [Member]
Actuarial net (loss) gain	(524)	(1,557)
Transition obligation / (asset)		(18)
Net prior service credit	538	750
Total	$ 14	$ (825)

After tax total of net gain (loss), prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s).

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant