Segment Information - Revenues and Long-lived Assets by Geographical Area (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 26, 2021	Jun. 27, 2020	Jun. 26, 2021	Jun. 27, 2020	Dec. 26, 2020
Segment Reporting Information
Net sales	$ 523,488	$ 307,337	$ 987,282	$ 653,433
Long-lived assets	352,826		352,826		$ 344,178
Additions to long-lived assets			33,357	23,037
United States
Segment Reporting Information
Net sales	154,797	76,870	285,728	179,780
Long-lived assets	47,509		47,509		46,132
Additions to long-lived assets			1,732	2,026
China
Segment Reporting Information
Net sales	156,086	102,026	295,244	188,041
Long-lived assets	87,497		87,497		85,876
Additions to long-lived assets			7,127	4,516
Mexico
Segment Reporting Information
Long-lived assets	76,700		76,700		70,125
Additions to long-lived assets			13,231	4,260
Germany
Segment Reporting Information
Long-lived assets	37,447		37,447		37,976
Additions to long-lived assets			2,533	2,509
Philippines
Segment Reporting Information
Long-lived assets	69,308		69,308		66,994
Additions to long-lived assets			6,941	9,039
Other countries
Segment Reporting Information
Net sales	212,605	$ 128,441	406,310	285,612
Long-lived assets	$ 34,365		34,365		$ 37,075
Additions to long-lived assets			$ 1,793	$ 687