Business Segments - Revenue Information by Geographic Region (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 01, 2022	Oct. 02, 2021	Oct. 01, 2022	Oct. 02, 2021
Revenues From External Customers And Long Lived Assets [Line Items]
Total revenues	$ 14,635	$ 13,264	$ 41,777	$ 38,649
United States
Revenues From External Customers And Long Lived Assets [Line Items]
Total revenues	7,415	6,674	20,806	18,634
Europe, Middle East and Africa
Revenues From External Customers And Long Lived Assets [Line Items]
Total revenues	3,480	3,215	9,732	8,925
Asia/Pacific Rim
Revenues From External Customers And Long Lived Assets [Line Items]
Total revenues	2,910	2,862	8,949	9,378
Rest of Americas
Revenues From External Customers And Long Lived Assets [Line Items]
Total revenues	$ 830	$ 513	$ 2,290	$ 1,712