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Note 5 - Accounts Receivable and Customer Concentrations - Concentration of Revenue (Details) - Customer Concentration Risk [Member]
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Revenue Benchmark [Member] | Customer A [Member]    
Concentration risk 62.00% 67.00%
Revenue Benchmark [Member] | Customer B [Member]    
Concentration risk [1] 0.00% 0.00%
Accounts Receivable [Member] | Customer A [Member]    
Concentration risk 56.00% 57.00%
Accounts Receivable [Member] | Customer B [Member]    
Concentration risk 0.00% [1] 12.00%
[1] Less than 10%