Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	$ 399,732	$ 327,491
Accumulated depreciation	(188,098)	(180,578)
Property, plant and equipment, Net	211,634	146,913
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	10,181	5,223
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	64,298	44,570
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	310,571	266,358
Construction-in-Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	7,855	3,566
Other [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	$ 6,827	$ 7,774