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Note 1 - Nature of Business and Summary of Significant Accounting Policies (Details Textual) - USD ($)
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Contract with Customer, Asset, after Allowance for Credit Loss, Current $ 0 $ 65,000  
Contract with Customer, Asset, Allowance for Credit Loss 2,682,300   $ 2,781,800
Inventory Valuation Reserves 2,273   2,273
Inventory, Net 1,723,989   1,560,175
Inventory, Work in Process, Gross 208,718   396,880
Research and Development Expense 16,275 $ 0  
Prepaid Expenses and Other Current Assets [Member]      
Prepaid Supplies $ 97,489   $ 54,520
Revenue Benchmark [Member] | Geographic Concentration Risk [Member] | UNITED STATES      
Concentration Risk, Percentage 93.10% 96.80%  
Minimum [Member]      
Contract with Customer, Liability, Interest Rate     1.00%
Property, Plant and Equipment, Useful Life (Year)     2 years
Maximum [Member]      
Contract with Customer, Liability, Interest Rate     7.00%
Property, Plant and Equipment, Useful Life (Year)     5 years