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Note 7 - Segment, Significant Customers and Geographic Information - Customers with Sales and Accounts Receivable Greater Than 10% (Details) - Customer Concentration Risk [Member]
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Revenue Benchmark [Member] | Distributor A [Member]          
Concentration risk 26.00% 24.00% 25.00% 33.00%  
Revenue Benchmark [Member] | Distributor B [Member]          
Concentration risk 18.00% 25.00% 18.00% 19.00%  
Revenue Benchmark [Member] | Distributor C [Member]          
Concentration risk     10.00%    
Accounts Receivable [Member] | Distributor A [Member]          
Concentration risk     31.00%   28.00%
Accounts Receivable [Member] | Distributor B [Member]          
Concentration risk     17.00%   29.00%