Segment Information - Summary of Sales to External Customers and Long-Lived Tangible Assets by Geographical Region (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 619,793	$ 584,954	$ 405,443
Property, plant and equipment, net	259,280	230,093
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	437,838	407,917	275,152
Property, plant and equipment, net	173,269	155,784
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	40,334	36,481	32,736
Property, plant and equipment, net	25,288	21,069
Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	62,657	64,177	46,092
Property, plant and equipment, net	26,078	19,936
Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	2,176	1,921	861
Mexico [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	40,937	45,863	27,023
Property, plant and equipment, net	7,544	5,821
South America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	35,845	28,595	23,558
Property, plant and equipment, net	27,101	27,483
Other Country [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	6		21
All Foreign Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	181,955	177,037	$ 130,291
Property, plant and equipment, net	$ 86,011	$ 74,309