Segment Information - Revenues and Long-lived Assets by Geographical Area (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 28, 2026	Mar. 29, 2025	Dec. 27, 2025
Segment Reporting Information
Net sales	$ 656,969	$ 554,307
Long-lived assets	533,528		$ 540,640
Additions to long-lived assets	17,347	16,327
United States
Segment Reporting Information
Net sales	229,523	198,378
Long-lived assets	91,352		95,619
Additions to long-lived assets	1,080	3,493
China
Segment Reporting Information
Net sales	155,903	129,394
Long-lived assets	128,909		130,047
Additions to long-lived assets	2,009	1,483
Mexico
Segment Reporting Information
Long-lived assets	80,712		83,478
Additions to long-lived assets	1,415	1,484
Germany
Segment Reporting Information
Long-lived assets	113,798		110,246
Additions to long-lived assets	8,634	7,620
Philippines
Segment Reporting Information
Long-lived assets	60,260		61,591
Additions to long-lived assets	1,853	637
Other countries
Segment Reporting Information
Net sales	271,543	226,535
Long-lived assets	58,497		$ 59,659
Additions to long-lived assets	$ 2,356	$ 1,610

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

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