Business Segments - Net Sales by Geographic Location (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Oct. 01, 2017	Sep. 30, 2018	Oct. 01, 2017
Revenues from External Customers and Long-Lived Assets [Line Items]
NET SALES	$ 347,612	$ 331,404	$ 1,123,004	$ 746,252
U.S. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
NET SALES	27,653	30,231	88,663	96,454
Mexico [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
NET SALES	170,123	149,869	518,021	444,764
Germany [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
NET SALES	57,205	58,195	199,398	78,108
Poland [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
NET SALES	$ 92,631	$ 93,109	$ 316,922	$ 126,926