Information Related to Effect of Derivative Instruments on Our Consolidated Condensed Statements of Income and Consolidated Condensed Statements of Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Derivative Instruments Gain Loss [Line Items]
Gain (loss) on derivatives	$ (65)	$ (4,788)
Other comprehensive loss | Foreign Currency Derivatives
Derivative Instruments Gain Loss [Line Items]
Gain (loss) on derivatives	(667)	(4,795)
Cost of sales | Foreign Currency Derivatives
Derivative Instruments Gain Loss [Line Items]
Gain (loss) on derivatives	478	78
Foreign currency gain (loss) | Foreign Currency Derivatives
Derivative Instruments Gain Loss [Line Items]
Gain (loss) on derivatives	$ 124	$ (71)