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Note 12 - Segment Reporting (Details Textual)
3 Months Ended 12 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Number of Operating Segments 1    
Customer Concentration Risk [Member] | Revenue Benchmark [Member]      
Number of Major Customers 1 1  
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | One Customer [Member]      
Concentration Risk, Percentage 22.00% 15.00%  
Customer Concentration Risk [Member] | Revenue Benchmark [Member] | Geographic Distribution, Foreign [Member]      
Concentration Risk, Percentage 16.60% 12.00%  
Customer Concentration Risk [Member] | Accounts Receivable [Member]      
Number of Major Customers 1   1
Customer Concentration Risk [Member] | Accounts Receivable [Member] | One Customer [Member]      
Concentration Risk, Percentage 17.00%   10.00%
Customer Concentration Risk [Member] | Long-Lived Assets [Member] | Geographic Distribution, Foreign [Member]      
Concentration Risk, Percentage 18.00%   18.00%