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Note 9 - Information Concerning Product Lines, Geographic Information and Revenue Concentration - Schedule of Revenue by Product Line (Details) - USD ($)
$ in Thousands
3 Months Ended
Apr. 03, 2022
Apr. 04, 2021
Total revenue $ 4,096 $ 2,240
New Products [Member]    
Total revenue 3,450 1,075
Mature Products [Member]    
Total revenue $ 646 $ 1,165