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Note 9 - Subsequent Events (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Nov. 12, 2020
Nov. 03, 2020
Oct. 15, 2020
Oct. 14, 2020
Oct. 07, 2020
Aug. 27, 2020
Jan. 28, 2020
Sep. 30, 2020
Sep. 30, 2020
Sep. 30, 2019
Sep. 25, 2020
Aug. 28, 2020
May 24, 2018
Common Stock, Shares Subscribed but Unissued (in shares)                         35,200
Stock Issued During Period, Shares, New Issues (in shares)           5,129 50,000 64,103          
Shares Issued, Price Per Share (in dollars per share)             $ 2       $ 1.95 $ 1.95  
Repayments of Notes Payable                 $ 331,573 $ 225,214      
Subsequent Event [Member]                          
Payment to Cancel Common Stock Subscriptions         $ 35,060                
Stock Issued During Period, Shares, New Issues (in shares)   25,641 77,300 12,820                  
Shares Issued, Price Per Share (in dollars per share)   $ 1.95 $ 1.95 $ 1.95                  
Proceeds from Issuance or Sale of Equity, Total   $ 49,996 $ 150,735 $ 24,999                  
Repayments of Trade Payables $ 133,880                        
Subsequent Event [Member] | Conversion of Convertible Promissory Notes into Common Stock [Member]                          
Debt Conversion, Original Debt, Amount 100,000                        
Subsequent Event [Member] | Loan Agreement [Member]                          
Debt Instrument, Face Amount $ 1,000,000                        
Debt Instrument, Interest Rate, Stated Percentage 12.00%                        
Subsequent Event [Member] | Secured Note Payable [Member]                          
Repayments of Notes Payable $ 100,000