Business Segments - Net Sales by Geographic Location (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 352,499	$ 388,944	$ 710,192	$ 775,392
U.S. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	26,466	30,527	54,722	61,010
Mexico [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	153,936	174,231	310,796	347,898
Germany [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	57,189	70,968	121,237	142,193
Poland [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 114,908	$ 113,218	$ 223,437	$ 224,291