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Derivative Financial Instruments - Gains and Losses on Derivative Instruments (Details) - USD ($)
$ in Thousands
3 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Amounts of gains and losses on the derivative instruments    
Amount of Gain (Loss) Deferred as a Component of Accumulated Other Comprehensive Loss $ (2,367) $ (943)
Amount of Loss (Gain) Reclassified from Accumulated Other Comprehensive Loss to Costs of Goods Sold (330) (226)
Designated as hedging instruments | Cash flow hedges    
Amounts of gains and losses on the derivative instruments    
Amount of Gain (Loss) Deferred as a Component of Accumulated Other Comprehensive Loss (2,367) (943)
Amount of Loss (Gain) Reclassified from Accumulated Other Comprehensive Loss to Costs of Goods Sold $ (330) $ (226)