Business Segments - Revenue Information by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2025	Mar. 30, 2024
Revenues From External Customers And Long Lived Assets [Line Items]
Total revenues	$ 11,896	$ 11,761
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Total revenues	5,283	5,321
Europe, Middle East and Africa
Revenues From External Customers And Long Lived Assets [Line Items]
Total revenues	2,861	3,698
Asia/Pacific Rim
Revenues From External Customers And Long Lived Assets [Line Items]
Total revenues	3,360	2,444
Americas, excluding the U.S.
Revenues From External Customers And Long Lived Assets [Line Items]
Total revenues	$ 392	$ 298