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Note 3 - Revenue Recognition - Schedule of Concentration Risk (Details) - Revenue Benchmark [Member] - Customer Concentration Risk [Member]
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Purchaser A [Member]    
Concentration risk percentage 28.00% 11.00%
Purchaser B [Member]    
Concentration risk percentage 23.00% 18.00%
Purchaser C [Member]    
Concentration risk percentage 11.00% 0.00%
Purchaser D [Member]    
Concentration risk percentage 0.00% 15.00%
Purchaser E [Member]    
Concentration risk percentage 0.00% 13.00%