Other Income (Expense), Net - Details of Components of Other Income Expense, Net (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Other Income and Expenses [Abstract]
Foreign currency gains (losses)	$ 2,626	$ (73)	$ (4,397)	$ (1,529)
Components of Net Periodic Benefit Cost Other than Service Cost	(56)	(404)	(165)	(1,372)
Factoring costs	(120)	(218)	(591)	(691)
Miscellaneous income (expense)	334	181	(204)	501
Other income (expense), net	$ 2,784	$ (514)	$ (5,357)	$ (3,091)