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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
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Derivatives designated as cash flow hedges:      
Gain (loss) recorded in other comprehensive income (loss) $ 1,967 $ 441 $ (582)
Gain (loss) reclassified from other comprehensive income (loss) into net income $ 1,376 $ 634 $ (164)