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Business Segments - Revenue Information by Geographic Region (Details) - USD ($)
$ in Thousands
 3 Months Ended
Apr. 01, 2023
Apr. 02, 2022
Revenues From External Customers And Long Lived Assets [Line Items]    
Total revenues $ 13,706 $ 13,387
United States    
Revenues From External Customers And Long Lived Assets [Line Items]    
Total revenues 6,774 6,543
Europe, Middle East and Africa    
Revenues From External Customers And Long Lived Assets [Line Items]    
Total revenues 4,177 3,431
Asia/Pacific Rim    
Revenues From External Customers And Long Lived Assets [Line Items]    
Total revenues 2,143 2,853
Rest of Americas    
Revenues From External Customers And Long Lived Assets [Line Items]    
Total revenues $ 612 $ 560