Information Related to Effect of Derivative Instruments on Our Consolidated Condensed Statements of Income (loss) and Consolidated Condensed Statements of Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Derivative Instruments Gain Loss [Line Items]
Gain (loss) on derivatives	$ 503	$ 604	$ 438	$ (4,184)
Other comprehensive income (loss) | Foreign Currency Derivatives
Derivative Instruments Gain Loss [Line Items]
Gain (loss) on derivatives	(62)	1,458	(729)	(3,337)
Cost of sales | Foreign Currency Derivatives
Derivative Instruments Gain Loss [Line Items]
Gain (loss) on derivatives	529	(796)	1,007	(718)
Foreign currency gain (loss) | Foreign Currency Derivatives
Derivative Instruments Gain Loss [Line Items]
Gain (loss) on derivatives	$ 36	$ (58)	$ 160	$ (129)