Segment Information - Revenues and Long-lived Assets by Geographical Area (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 30, 2019	Mar. 31, 2018	Dec. 29, 2018
Segment Reporting Information [Line Items]
Net sales	$ 405,500	$ 417,813
Long-lived assets	342,334		$ 339,894
Additions to long-lived assets	14,076	17,909
United States
Segment Reporting Information [Line Items]
Net sales	119,528	123,877
Long-lived assets	57,527		58,691
Additions to long-lived assets	905	2,909
China
Segment Reporting Information [Line Items]
Net sales	57,334	106,508
Long-lived assets	94,807		95,806
Additions to long-lived assets	1,225	5,144
Mexico
Segment Reporting Information [Line Items]
Long-lived assets	73,694		70,495
Additions to long-lived assets	5,484	3,310
Germany
Segment Reporting Information [Line Items]
Long-lived assets	35,536		36,548
Additions to long-lived assets	598	3,038
Philippines
Segment Reporting Information [Line Items]
Long-lived assets	36,223		32,459
Additions to long-lived assets	5,229	2,162
Other countries(a)
Segment Reporting Information [Line Items]
Net sales	228,638	187,428
Long-lived assets	44,547		$ 45,895
Additions to long-lived assets	$ 635	$ 1,346