Quarterly report pursuant to Section 13 or 15(d)

Note 3 - Concentrations of Business and Credit Risk (Details Textual)

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Note 3 - Concentrations of Business and Credit Risk (Details Textual)
Pure in Thousands, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2024
USD ($)
Jun. 30, 2023
Jun. 30, 2024
USD ($)
Jun. 30, 2023
Dec. 31, 2023
USD ($)
Cash, Uninsured Amount $ 0   $ 0   $ 0
Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member]          
Number of Major Customers 0 0 0 0  
Supplier Concentration Risk [Member] | Cost of Goods and Service Benchmark [Member]          
Number of Major Customers 0 0 0 0