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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 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Derivatives designated as cash flow hedges:        
Gain (loss) recorded in other comprehensive income (loss) $ 570 $ (2,418) $ 216 $ (1,423)
Gain (loss) reclassified from other comprehensive income (loss) into net income (loss) 332 519 121 1,255
Forward Currency Contracts [Member]
       
Derivatives designated as cash flow hedges:        
Gain (loss) recorded in other comprehensive income (loss) 416 (1,430) 534 311
Gain (loss) reclassified from other comprehensive income (loss) into net income (loss) 423 863 242 1,538
Commodity Contract [Member]
       
Derivatives designated as cash flow hedges:        
Gain (loss) recorded in other comprehensive income (loss) 154 (988) (318) (1,734)
Gain (loss) reclassified from other comprehensive income (loss) into net income (loss) $ (91) $ (344) $ (121) $ (283)