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Information Related to Effect of Derivative Instrument's on the Consolidated Statements of Income (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Derivative Instruments Gain Loss [Line Items]    
Gain (loss) on derivatives $ 3,081 $ 777
Commodity Derivatives    
Derivative Instruments Gain Loss [Line Items]    
Gain (loss) on derivatives   (73)
Other comprehensive income | Foreign Currency Derivatives    
Derivative Instruments Gain Loss [Line Items]    
Gain (loss) on derivatives 1,151 1,096
Other comprehensive income | Commodity Derivatives    
Derivative Instruments Gain Loss [Line Items]    
Gain (loss) on derivatives   (218)
Cost of sales | Foreign Currency Derivatives    
Derivative Instruments Gain Loss [Line Items]    
Gain (loss) on derivatives 1,976 (444)
Cost of sales | Commodity Derivatives    
Derivative Instruments Gain Loss [Line Items]    
Gain (loss) on derivatives   145
Selling, general and administrative expense | Foreign Currency Derivatives    
Derivative Instruments Gain Loss [Line Items]    
Gain (loss) on derivatives   75
Foreign currency gain (loss) | Foreign Currency Derivatives    
Derivative Instruments Gain Loss [Line Items]    
Gain (loss) on derivatives $ (46) $ 50