Retirement Plans (Amounts Recognized In The Consolidated Balance Sheets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Current liability	$ 0	$ 0
Long-term liability	(49,100)	(42,703)
SERP [Member]
Defined Benefit Plan Disclosure [Line Items]
Current liability	(101)	(102)
Long-term liability	(1,645)	(1,543)
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Current liability	(223)	(256)
Long-term liability	$ (2,631)	$ (2,758)