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Information Related to Effect of Derivative Instruments on Our Consolidated Condensed Statements of Income (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Derivative Instruments Gain Loss [Line Items]    
Gain (loss) on derivatives $ (4,788) $ 969
Other comprehensive (loss) income | Foreign Currency Derivatives    
Derivative Instruments Gain Loss [Line Items]    
Gain (loss) on derivatives (4,795) 766
Cost of sales | Foreign Currency Derivatives    
Derivative Instruments Gain Loss [Line Items]    
Gain (loss) on derivatives 78 240
Foreign currency loss | Foreign Currency Derivatives    
Derivative Instruments Gain Loss [Line Items]    
Gain (loss) on derivatives $ (71) $ (37)