Business Segments - Net Sales by Geographic Location (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 357,693	$ 386,448
U.S. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	28,256	30,484
Mexico [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	156,860	173,666
Germany [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	64,048	71,225
Poland [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 108,529	$ 111,073