Business Segments - Revenue Information by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 28, 2025	Jun. 29, 2024	Jun. 28, 2025	Jun. 29, 2024
Revenues From External Customers And Long Lived Assets [Line Items]
Total revenues	$ 13,571	$ 12,631	$ 25,467	$ 24,392
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Total revenues	5,760	5,598	11,043	10,919
Europe, Middle East and Africa
Revenues From External Customers And Long Lived Assets [Line Items]
Total revenues	3,653	2,667	6,514	6,365
Asia/Pacific Rim
Revenues From External Customers And Long Lived Assets [Line Items]
Total revenues	3,675	3,597	7,035	6,042
Americas, excluding the U.S.
Revenues From External Customers And Long Lived Assets [Line Items]
Total revenues	$ 483	$ 769	$ 875	$ 1,066