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Financial Instruments and Fair Value Measurements - Financial statements of Income (Losses) Recognized Related to Cash Flow Hedges (Details) - Cash Flow Hedging - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items]      
Amount of (loss) income recognized in other comprehensive income $ (2,659) $ 634 $ (646)
Amount of loss subsequently reclassified to earnings $ 71 $ 3,317 $ 4,576