Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Property Plant And Equipment [Line Items]
Property, plant and equipment, Gross	$ 425,447	$ 425,207
Accumulated depreciation and amortization	(267,546)	(263,109)
Property, plant and equipment, net	157,901	162,098
Land and Land Improvements [Member]
Property Plant And Equipment [Line Items]
Property, plant and equipment, Gross	10,375	10,473
Buildings [Member]
Property Plant And Equipment [Line Items]
Property, plant and equipment, Gross	63,547	63,765
Machinery and Equipment [Member]
Property Plant And Equipment [Line Items]
Property, plant and equipment, Gross	340,650	339,203
Construction-in-Process [Member]
Property Plant And Equipment [Line Items]
Property, plant and equipment, Gross	4,005	4,896
Other [Member]
Property Plant And Equipment [Line Items]
Property, plant and equipment, Gross	$ 6,870	$ 6,870