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Derivatives and Other Financial Instruments (Details 1) (Foreign Currency Exchange Contracts, Other Expense: Gain (loss) on foreign currency exchange rate, Not designated as hedging instrument, USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Foreign Currency Exchange Contracts | Other Expense: Gain (loss) on foreign currency exchange rate | Not designated as hedging instrument
       
Derivatives, Fair Value [Line Items]        
Derivatives, (Loss) Gain Recognized in Income $ 88 $ (70) $ 75 $ (85)