Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Jan. 02, 2026	Dec. 27, 2024	Dec. 29, 2023	Dec. 30, 2022
Deferred tax assets:
Accrued expenses	$ 3,185	$ 1,230
Stock-based compensation	5,271	6,103
Operating lease liability	6,439	6,466
Net operating loss and other credit carryforwards	50,662	44,083
Other deferred tax assets	2,305	2,776
Gross deferred tax assets	67,862	60,658
Valuation allowance	(54,556)	(46,804)	$ (42,744)	$ (46,977)
Total deferred tax assets	13,306	13,854
Deferred tax liabilities:
Property, plant, equipment and intangibles	(4,666)	(5,976)
Operating lease ROU assets	(4,706)	(6,066)
Foreign taxes	(569)	(1,321)
Total deferred tax liabilities	(9,941)	(13,363)
Total net deferred tax assets	$ 3,365	$ 491