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Note 10 - Convertible Notes Payable - Related Parties (Details Textual)
3 Months Ended 9 Months Ended 12 Months Ended
Nov. 19, 2021
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Dec. 31, 2020
USD ($)
Interest Expense, Related Party   $ 101,845 $ 107,033 $ 338,495 $ 318,543  
Convertible Debt Payable to Related Party [Member]            
Interest Payable, Related Party   1,160,088   1,160,088   $ 1,046,911
Interest Expense, Related Party   61,918 60,529 183,043 180,268  
Debt Instrument, Convertible, Beneficial Conversion Feature   0 $ 9 18,142 $ 0  
Long-term Debt, Total   1,036,434   $ 1,036,434   $ 2,558,681
Convertible Debt Payable to Related Party [Member] | Joseph Byrne [Member]            
Debt Instrument, Convertible, Number of Equity Instruments       76,123   76,123
Convertible Debt Payable to Related Party Reclassified to Private Investor [Member]            
Debt Instrument, Convertible, Number of Equity Instruments       719,591    
Convertible Debt Payable to Related Party Reclassified to Private Investor [Member] | Subsequent Event [Member]            
Debt Instrument, Convertible, Number of Equity Instruments 625,103          
Debt Instrument, Debt Default, Amount $ 1,000,164          
Convertible Debt Payable to Related Party Reclassified to Private Investor [Member] | Joseph Byrne [Member]            
Debt Instrument, Convertible, Number of Equity Instruments       63,997    
Long-term Debt, Total   $ 102,395   $ 102,395