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Financial Instruments - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Derivative [Line Items]          
Maximum length of time to hedge exposure to foreign currency exchange risk     1 year    
Maximum length of time to hedge exposure to price fluctuations in material commodities     2 years    
Foreign Currency Derivatives          
Derivative [Line Items]          
Notional Value $ 25,210,000   $ 25,210,000   $ 33,250,000
Commodity Derivatives          
Derivative [Line Items]          
Notional Value 0   0   $ 0
Interest Rate Swap          
Derivative [Line Items]          
Hedge Ineffectiveness Incurred $ 0 $ 0 $ 0 $ 0