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Note 9 - Convertible Notes (Details Textual)
2 Months Ended 3 Months Ended 9 Months Ended
Nov. 19, 2021
USD ($)
Nov. 19, 2021
USD ($)
Sep. 30, 2021
USD ($)
shares
Sep. 30, 2020
USD ($)
Sep. 30, 2021
USD ($)
shares
Sep. 30, 2020
USD ($)
Conversion of Convertible Notes into Common Stock [Member]            
Debt Conversion, Original Debt, Amount     $ 167,924   $ 5,023,785  
Debt Conversion, Converted Instrument, Shares Issued (in shares) | shares     104,953   3,395,133  
Debt Conversion, Accrued Interest, Amount         $ 78,893  
Stock Issued During Period, Shares, Settlement of Accrued Interest (in shares) | shares         94,357  
Convertible Debt Payable to Non-related Party [Member]            
Debt Instrument, Convertible, Beneficial Conversion Feature         $ 93,164  
Convertible Debt [Member]            
Debt Instrument, Convertible, Beneficial Conversion Feature     $ 0 $ 0 $ 111,306 $ 0
Debt Instrument, Convertible, Number of Equity Instruments         551,815  
Convertible Debt [Member] | Subsequent Event [Member]            
Debt Instrument, Convertible, Number of Equity Instruments 457,517 416,667        
Debt Instrument, Debt Default, Amount $ 726,472 $ 726,472