Disaggregation of Sales, Geographic Sales and Product Sales - Net Sales by Geographic Areas (Details) - USD ($) $ in Thousands		3 Months Ended
		Apr. 01, 2022	Apr. 02, 2021
Geographic And Sales [Line Items]
Total net sales		$ 63,200	$ 50,752
Geographic Distribution, Domestic [Member]
Geographic And Sales [Line Items]
Total net sales		2,630	2,340
Geographic Distribution, Foreign [Member]
Geographic And Sales [Line Items]
Total net sales		60,570	48,412
Geographic Distribution, Foreign [Member] | China [Member]
Geographic And Sales [Line Items]
Total net sales		28,239	19,643
Geographic Distribution, Foreign [Member] | JAPAN
Geographic And Sales [Line Items]
Total net sales		11,633	9,603
Geographic Distribution, Foreign [Member] | Other [Member]
Geographic And Sales [Line Items]
Total net sales	[1]	$ 20,698	$ 19,166

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