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Financial Instruments and Fair Value Measurements (Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)) (Details) (Designated as Hedging Instrument [Member], USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Derivatives designated as cash flow hedges:        
Gain (loss) recorded in other comprehensive income (loss) $ (477) $ 552 $ (261) $ (871)
Gain (loss) reclassified from other comprehensive income (loss) into net income (loss) (333) 243 (212) 1,498
Forward Currency Contracts [Member]
       
Derivatives designated as cash flow hedges:        
Gain (loss) recorded in other comprehensive income (loss) (457) (83) 77 228
Gain (loss) reclassified from other comprehensive income (loss) into net income (loss) (290) 612 (48) 2,150
Commodity Contract [Member]
       
Derivatives designated as cash flow hedges:        
Gain (loss) recorded in other comprehensive income (loss) (20) 635 (338) (1,099)
Gain (loss) reclassified from other comprehensive income (loss) into net income (loss) $ (43) $ (369) $ (164) $ (652)