Property and Equipment - Summary of Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 27, 2024	Dec. 29, 2023
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 195,303	$ 175,906
Less accumulated depreciation	(100,436)	(83,151)
Total property and equipment, net	94,867	92,755
Machinery
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	123,509	113,529
Leasehold improvements
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	48,487	46,129
Office furniture, fixtures, and equipment
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	1,593	1,320
Vehicles
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	395	396
Construction-in-process
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	12,612	4,216
Computer software, hardware, and equipment
Property Plant And Equipment [Line Items]
Property, plant and equipment, gross	$ 8,707	$ 10,316