Other Long Term Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Other Long Term Liabilities [Abstract]
Deferred Gains, net of Amortization	$ 18,853	$ 34,009
Pension and Post Retirement	9,851	10,339
Alabama Lease Incentive	6,026	6,887
Insurance Reserves	4,591	5,521
Derivatives	5,262	4,412
Other	2,463	4,138
Other Long Term Liabilities	$ 47,046	$ 65,306