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Financial Instruments and Fair Value Measurements (Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Derivatives designated as cash flow hedges:    
Gain (loss) recorded in other comprehensive income (loss) $ (494) $ 797
Gain (loss) reclassified from other comprehensive income (loss) into net income (loss) (44) (138)
Designated as Hedging Instrument [Member] | Forward Currency Contracts [Member]    
Derivatives designated as cash flow hedges:    
Gain (loss) recorded in other comprehensive income (loss) (494) 797
Gain (loss) reclassified from other comprehensive income (loss) into net income (loss) $ (44) $ (138)