Disaggregation of Revenues, Geographic Sales and Product Sales - Net Sales by Geographic Areas (Details) - USD ($) $ in Thousands		12 Months Ended
		Jan. 02, 2026	Dec. 27, 2024	Dec. 29, 2023	Dec. 30, 2022
Geographic And Sales [Line Items]
Total net sales		$ 239,442	$ 313,901	$ 322,415	$ 239,442
Geographic Distribution, Domestic [Member]
Geographic And Sales [Line Items]
Total net sales		22,558	19,896	17,221
Geographic Distribution, Foreign [Member]
Geographic And Sales [Line Items]
Total net sales		216,884	294,005	305,194
Geographic Distribution, Foreign [Member] | China [Member]
Geographic And Sales [Line Items]
Total net sales	[1]	77,781	162,287	184,569
Geographic Distribution, Foreign [Member] | JAPAN
Geographic And Sales [Line Items]
Total net sales		45,265	41,814	38,468
Geographic Distribution, Foreign [Member] | Other [Member]
Geographic And Sales [Line Items]
Total net sales	[2]	$ 93,838	$ 89,904	$ 82,157

[1] The China region includes sales into China and Hong Kong.

[2] No other location individually exceeds 10% of the total net sales.