Other Expense, Net - Details of Components of Other Income Expense, Net (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Other Income and Expenses [Abstract]
Foreign currency losses	$ (1,172)	$ (121)	$ (1,456)	$ (1,709)
Components of Net Periodic Benefit Cost Other than Service Cost	(551)	(196)	(968)	(433)
Losses on sales of receivables	(148)	(392)	(473)	(717)
Miscellaneous income	90	152	320	583
Other expense, net	$ (1,781)	$ (557)	$ (2,577)	$ (2,276)