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Note 14 - Information Concerning Product Lines, Geographic Information and Revenue Concentration - Customer and Distributor Concentration of Revenue (Details) - Customer Concentration Risk [Member] - Revenue Benchmark [Member]
12 Months Ended
Dec. 31, 2023
Jan. 01, 2023
Jan. 02, 2022
Distributor "A" [Member]      
Concentration risk percentage   15.00% 15.00%
Distributor "B" [Member]      
Concentration risk percentage   12.00% 22.00%
Distributor "C" [Member]      
Concentration risk percentage     11.00%
Customer "A" [Member]      
Concentration risk percentage 70.00% 20.00%  
Customer "C" [Member]      
Concentration risk percentage   16.00%  
Customer "F" [Member]      
Concentration risk percentage   12.00% 14.00%
Customer "H" [Member]      
Concentration risk percentage     10.00%