Business Segments - Net Sales by Geographic Location (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 352,014	$ 347,612	$ 1,062,206	$ 1,123,004
U.S. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	26,916	27,653	81,638	88,663
Mexico [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	161,173	170,123	471,969	518,021
Germany [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	59,548	57,205	180,785	199,398
Poland [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 104,377	$ 92,631	$ 327,814	$ 316,922