Other Current Liabilities - Schedule of Changes in Liability for Product Warranty Claims (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Other Liabilities Disclosure [Abstract]
Balance at beginning of the period	$ 9,447	$ 11,379
Satisfaction of warranty claims	(1,469)	(1,792)
Provision for warranty claims	1,450	893
Other, primarily impact from changes in foreign currency exchange rates	(64)	38
Balance at end of the period	$ 9,364	$ 10,518