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Note 7 - Convertible Notes Payable - Affiliates (Details Textual) - USD ($)
12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Nov. 07, 2017
Jun. 30, 2016
Feb. 10, 2015
Convertible Notes Payable, Noncurrent $ 3,525,216 $ 3,316,060      
Interest Expense, Total 360,492 379,189      
Repayments of Related Party Debt $ 17,500      
Chief Executive Officer [Member]          
Number of Shares Per Unit 1        
Number of Warrants Per Unit 1        
Class of Warrant or Right, Exercise Price of Warrants or Rights $ 0.75        
Repayments of Related Party Debt $ 12,500        
President [Member]          
Class of Warrant or Right, Exercise Price of Warrants or Rights         $ 1.50
Repayments of Related Party Debt $ 18,000        
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 0.25        
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 104,135 104,135      
January 2015 Convertible Notes [Member] | Convertible Debt [Member] | Chief Executive Officer [Member]          
Convertible Notes Payable, Noncurrent 1,669,342 1,610,760      
January 2015 Convertible Notes [Member] | Convertible Debt [Member] | President [Member]          
Convertible Notes Payable, Noncurrent 866,866 836,445      
January 2015 Convertible Notes [Member] | Convertible Debt [Member] | Executive Vice Chairman [Member]          
Convertible Notes Payable, Noncurrent $ 431,188 416,057      
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 21,094 20,205      
September 2015 Convertible Notes [Member] | Convertible Debt [Member] | Chief Executive Officer [Member]          
Convertible Notes Payable, Noncurrent 452,400 435,229      
September 2015 Convertible Notes [Member] | Convertible Debt [Member] | President [Member]          
Convertible Notes Payable, Noncurrent 18,224 17,569      
September 2015 Convertible Notes [Member] | Convertible Debt [Member] | Executive Vice Chairman [Member]          
Convertible Notes Payable, Noncurrent 87,196 $ 88,927      
September 2015 Convertible Notes [Member] | Convertible Debt [Member] | Shareholder [Member]          
Repayments of Related Party Debt 5,000        
Replacement Note Held as Collateral [Member] | Chief Executive Officer [Member]          
Convertible Notes Payable, Total $ 130,000   $ 130,000