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Financial Instruments (Derivative Instruments Which Were Not Designated As Hedging Instruments) (Details) (Forward Currency Contracts [Member], Other Expense (Income), Net [Member], Derivatives Not Designated As Hedging Instruments [Member], USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Forward Currency Contracts [Member] | Other Expense (Income), Net [Member] | Derivatives Not Designated As Hedging Instruments [Member]
   
Derivatives, Fair Value [Line Items]    
Amount of Gain or (Loss) Recognized in Income on Derivative $ (2,451) $ 8,233