Financial Instruments (Details 3) (Commodity Contract [Member], USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset	$ 725	$ 0
Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability	$ 0	$ 1,034

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

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