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Note 6 - Loan Payable (Details Textual) - USD ($)
12 Months Ended 66 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Sep. 25, 2014
Jan. 26, 2009
Construction Loan         $ 7,750,000
PA-1 [Member]          
Debt Instrument, Debt Default, Amount       $ 8,137,117  
Pennvest Loan [Member]          
Construction Loan $ 9,028,983   $ 9,028,983    
Accrued Interest and Late Charges Payable 1,274,983   1,274,983    
Line of Credit Facility, Maximum Borrowing Capacity $ 7,754,000   7,754,000    
Term Loan, Period for Interest Only Payments 3 years        
Term Loan, Period for Amortization of Principal 10 years        
Repayments of Long-term Debt, Total     3,502,000    
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months $ 771,000   771,000    
Long-term Debt, Maturities, Repayments of Principal in Year Two 794,000   794,000    
Long-term Debt, Maturities, Repayments of Principal in Year Three 819,000   819,000    
Long-term Debt, Maturities, Repayments of Principal in Year Four 846,000   846,000    
Long-term Debt, Maturities, Repayments of Principal in Year Five 873,000   873,000    
Long-term Debt, Maturities, Repayments of Principal after Year Five 149,000   $ 149,000    
Interest Expense, Debt, Total $ 197,494 $ 197,494      
Pennvest Loan [Member] | Years One Through Five [Member]          
Debt Instrument, Interest Rate During Period 2.547%        
Pennvest Loan [Member] | Years Six Through Maturity [Member]          
Debt Instrument, Interest Rate During Period 3.184%