Segment Information - Revenues and Long-lived Assets by Geographical Area (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 25, 2021	Sep. 26, 2020	Sep. 25, 2021	Sep. 26, 2020	Dec. 26, 2020
Segment Reporting Information
Net sales	$ 539,581	$ 391,566	$ 1,526,863	$ 1,044,999
Long-lived assets	364,329		364,329		$ 344,178
Additions to long-lived assets			60,634	36,693
United States
Segment Reporting Information
Net sales	172,995	106,121	458,723	285,901
Long-lived assets	47,533		47,533		46,132
Additions to long-lived assets			3,696	2,712
China
Segment Reporting Information
Net sales	160,628	126,506	455,872	314,547
Long-lived assets	90,984		90,984		85,876
Additions to long-lived assets			13,790	6,414
Mexico
Segment Reporting Information
Long-lived assets	82,882		82,882		70,125
Additions to long-lived assets			22,518	7,291
Germany
Segment Reporting Information
Long-lived assets	40,115		40,115		37,976
Additions to long-lived assets			6,994	3,793
Philippines
Segment Reporting Information
Long-lived assets	68,594		68,594		66,994
Additions to long-lived assets			10,109	15,331
Other countries
Segment Reporting Information
Net sales	205,958	$ 158,939	612,268	444,551
Long-lived assets	$ 34,221		34,221		$ 37,075
Additions to long-lived assets			$ 3,527	$ 1,152