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Note 6 - Convertible Notes Payable - Affiliates (Details Textual) - USD ($)
3 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Jun. 30, 2016
Interest Expense, Total $ 92,496 $ 98,439  
Warrants Payable With Secured Promissory Notes [Member]      
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 0.60    
Class of Warrant or Right, Purchase Price of Warrants or Rights, Per Share $ 0.10    
Chief Executive Officer [Member] | Warrants Payable With Secured Promissory Notes [Member]      
Class of Warrant or Right, Number Agreed to Sell 3,000,000    
President [Member]      
Number of Shares Per Unit 1    
Number of Warrants Per Unit 1    
President [Member] | Warrants Payable With Secured Promissory Notes [Member]      
Class of Warrant or Right, Number Agreed to Sell 30,000    
January 2015 Convertible Notes [Member] | Chief Executive Officer [Member] | Warrants Payable With Secured Promissory Notes [Member]      
Secured Promissory Notes Payable with Warrants $ 300,000    
January 2015 Convertible Notes [Member] | President [Member] | Warrants Payable With Secured Promissory Notes [Member]      
Secured Promissory Notes Payable with Warrants $ 30,000    
January 2015 Convertible Notes [Member] | Convertible Debt [Member]      
Debt Instrument, Interest Rate, Stated Percentage 4.00%    
Number of Shares Per Unit 1    
Number of Warrants Per Unit 0.5    
Conversion Price Per Unit $ 0.50    
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 1    
Debt Instrument, Convertible, Beneficial Conversion Feature $ 0    
Interest Expense, Total 26,248 26,248  
January 2015 Convertible Notes [Member] | Convertible Debt [Member] | Chief Executive Officer [Member]      
Convertible Notes Payable, Noncurrent 1,684,107 1,625,526  
January 2015 Convertible Notes [Member] | Convertible Debt [Member] | President [Member]      
Convertible Notes Payable, Noncurrent 874,534 844,113  
January 2015 Convertible Notes [Member] | Convertible Debt [Member] | Executive Vice Chairman [Member]      
Convertible Notes Payable, Noncurrent $ 435,002 419,871  
September 2015 Convertible Notes [Member] | Chief Executive Officer [Member]      
Convertible Notes Payable, Total     $ 405,831
September 2015 Convertible Notes [Member] | Executive Vice Chairman [Member]      
Convertible Notes Payable, Total     82,921
September 2015 Convertible Notes [Member] | Chief Financial Officer [Member]      
Convertible Notes Payable, Total     $ 16,382
September 2015 Convertible Notes [Member] | Convertible Debt [Member]      
Debt Instrument, Interest Rate, Stated Percentage 4.00%    
Conversion Price Per Unit $ 0.60    
Debt Instrument, Convertible, Beneficial Conversion Feature $ 0    
Interest Expense, Total 5,010 5,093  
September 2015 Convertible Notes [Member] | Convertible Debt [Member] | Chief Executive Officer [Member]      
Convertible Notes Payable, Noncurrent 155,707 439,087  
September 2015 Convertible Notes [Member] | Convertible Debt [Member] | President [Member]      
Convertible Notes Payable, Noncurrent 18,389 17,734  
September 2015 Convertible Notes [Member] | Convertible Debt [Member] | Shareholder [Member]      
Convertible Notes Payable, Noncurrent 388,734 $ 89,763  
Replacement Note Held as Collateral [Member] | Chief Executive Officer [Member]      
Convertible Notes Payable, Total 130,000    
Convertible Debt, Amount Sold to a Shareholder By an Officer $ 300,000