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Derivative Instruments and Hedging Activities (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Mar. 31, 2019
Dec. 31, 2018
Mar. 31, 2018
Derivatives designated as hedging instruments:          
Derivative contracts          
Assets     $ 213 $ 92 $ 26
Liabilities     (561) (1,086) (1,100)
Derivatives designated as hedging instruments: | Foreign currency forward contracts          
Derivative contracts          
Notional Amounts     11,050 11,050 368
Assets         21
Liabilities     (197) (407)  
Derivatives designated as hedging instruments: | Commodity futures contracts          
Derivative contracts          
Notional Amounts     7,158 9,580 11,537
Assets     213 92 5
Liabilities     $ (364) $ (679) $ (1,100)
Forecast | Foreign currency forward contracts          
Derivative contracts          
Loss to be reclassified $ (97) $ (100)      
Forecast | Commodity futures contracts          
Derivative contracts          
Gain (loss) to be reclassified $ 126 $ (277)