Pension (Amounts Recognized in Balance Sheet) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Non-current asset	$ 10,196	$ 17,485
Defined Benefit Pension Plans and SERP
Defined Benefit Plan Disclosure [Line Items]
Non-current asset	10,196	17,485
Current liability	(613)	(5,990)
Long-term liability	(60,909)	(122,145)
Net accrued benefit liability	$ (51,326)	$ (110,650)