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Note 1 - Summary of Significant Accounting Policies - Net Sales by Geographical Region (Details) - USD ($)
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Revenue, Percentage 100.00% 100.00%
Revenue $ 18,001,652 $ 15,982,438
Reportable Geographical Components [Member] | Americas [Member]    
Revenue, Percentage 12.00% 7.00%
Revenue $ 2,125,460 $ 1,073,433
Reportable Geographical Components [Member] | Asia Pacific [Member]    
Revenue, Percentage 14.00% 21.00%
Revenue $ 2,506,215 $ 3,406,420
Reportable Geographical Components [Member] | Europe [Member]    
Revenue, Percentage 65.00% 59.00%
Revenue $ 11,820,674 $ 9,379,337
Reportable Geographical Components [Member] | Middle East and Africa [Member]    
Revenue, Percentage 9.00% 13.00%
Revenue $ 1,549,303 $ 2,123,248