Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 1,081,786	$ 1,110,689
Accumulated depreciation	(578,700)	(588,565)
Property, plant and equipment, net	503,086	522,124
Land and Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	148,579	149,295
Production Machinery and Technical Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	873,928	899,764
Leasehold Improvements and Other [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	14,296	14,912
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 44,983	$ 46,718