Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 506,306	$ 371,649
Less—accumulated depreciation	145,278	112,369
Property, plant and equipment, net	361,028	259,280
Land and buildings
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	69,455	54,833
Machinery and equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	401,729	302,470
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 35,122	$ 14,346