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Note 13 - Information Concerning Product Lines, Geographic Information and Revenue Concentration - Customer and Distributor Concentration of Revenue (Details) - Customer Concentration Risk [Member] - Revenue Benchmark [Member]
3 Months Ended 9 Months Ended
Sep. 28, 2025
Sep. 29, 2024
Sep. 28, 2025
Sep. 29, 2024
Distributor "A" [Member]        
Concentration risk percentage 22.00% 11.00% 15.00% 11.00%
Distributor "C" [Member]        
Concentration risk percentage 12.00%      
Distributor "E" [Member]        
Concentration risk percentage 13.00%      
Customer "A" [Member]        
Concentration risk percentage   54.00% 53.00% 59.00%
Customer "B" [Member]        
Concentration risk percentage 18.00% 10.00% 11.00%  
Customer "J" [Member]        
Concentration risk percentage   19.00%    
Customer P [Member]        
Concentration risk percentage 13.00%      
Customer Q [Member]        
Concentration risk percentage 25.00%