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Note 3 - Equity Transactions (Details Textual)
1 Months Ended 3 Months Ended 9 Months Ended
May 31, 2019
USD ($)
$ / shares
shares
Sep. 30, 2019
USD ($)
$ / shares
shares
Apr. 30, 2018
USD ($)
Sep. 30, 2019
USD ($)
$ / shares
shares
Sep. 30, 2018
USD ($)
Mar. 30, 2018
USD ($)
Sep. 30, 2019
USD ($)
$ / shares
shares
Sep. 30, 2018
USD ($)
Share-based Payment Arrangement, Expense | $       $ 97,250 $ 22,360   $ 159,380 $ 50,310
Shares Issued, Value, Share-based Payment Arrangement, before Forfeiture | $   $ 87,750            
Shares Issued, Shares, Share-based Payment Arrangement, before Forfeiture   450,000            
Stock Issued During Period, Shares, Issued for Services       585,666        
Stock Issued During Period, Value, Issued for Services | $       $ 268,579        
Proceeds from Issuance of Private Placement | $           $ 74,983    
Warrants Issued with Units [Member]                
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares $ 0.30              
Warrants Issued to Placement Agent in Connection with Private Placement [Member]                
Class of Warrant or Right, Number of Securities Called by Warrants or Rights 1,359,000              
Warrants To Purchase Common Stock [Member]                
Class of Warrant or Right, Number of Securities Called by Warrants or Rights   63,321,294   63,321,294     63,321,294  
Warrants To Purchase Common Stock [Member] | Minimum [Member]                
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares   $ 0.25   $ 0.25     $ 0.25  
Warrants To Purchase Common Stock [Member] | Maximum [Member]                
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares   1   1     1  
Warrants to Purchase Units Sold in May 2016 Private Placement [Member]                
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares   $ 0.25   $ 0.25     $ 0.25  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights   480,000   480,000     480,000  
Warrants to Purchase Units Sold in February 2017 Private Placement [Member]                
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares   $ 0.35   $ 0.35     $ 0.35  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights   164,074   164,074     164,074  
Warrants to Purchase Units Sold in October 2017 Private Placement [Member]                
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares   $ 100   $ 100     $ 100  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights   600   600     600  
Private Placement [Member]                
Equity Units Issued During Period, Shares, New Issues 29,770,000              
Shares Issued, Price Per Share | $ / shares $ 0.25              
Equity Units, Number of Common Shares in Each Unit 1              
Equity Units, Number of Warrants in Each Unit 1              
Proceeds from Issuance of Private Placement | $ $ 7,442,500   $ 2,010,000          
Payments of Stock Issuance Costs | $ $ 452,900