Segment Information - Revenues and Long-lived Assets by Geographical Area (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jan. 01, 2022	Sep. 25, 2021	Jun. 26, 2021	Mar. 27, 2021	Dec. 26, 2020	Sep. 26, 2020	Jun. 27, 2020	Mar. 28, 2020	Jan. 01, 2022	Dec. 26, 2020	Dec. 28, 2019
Segment Reporting Information
Net sales	$ 553,065	$ 539,581	$ 523,488	$ 463,794	$ 400,696	$ 391,566	$ 307,337	$ 346,096	$ 2,079,928	$ 1,445,695	$ 1,503,873
Long-lived assets	437,889				344,178				437,889	344,178	344,617
Additions to long-lived assets									96,308	51,208	66,366
U.S.
Segment Reporting Information
Net sales									639,381	392,544	440,461
Long-lived assets	57,923				46,132				57,923	46,132	58,081
Additions to long-lived assets									7,690	4,170	5,864
China
Segment Reporting Information
Net sales									620,211	438,000	416,385
Long-lived assets	122,867				85,876				122,867	85,876	88,306
Additions to long-lived assets									26,396	10,074	10,400
Mexico
Segment Reporting Information
Long-lived assets	107,283				70,125				107,283	70,125	73,096
Additions to long-lived assets									28,707	9,977	13,827
Germany
Segment Reporting Information
Long-lived assets	39,055				37,976				39,055	37,976	36,025
Additions to long-lived assets									8,519	5,600	4,017
Philippines
Segment Reporting Information
Long-lived assets	74,918				66,994				74,918	66,994	51,738
Additions to long-lived assets									19,342	19,612	22,944
Other countries
Segment Reporting Information
Net sales									820,336	615,151	647,027
Long-lived assets	$ 35,843				$ 37,075				35,843	37,075	37,371
Additions to long-lived assets									$ 5,654	$ 1,775	$ 9,314