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Note 7 - Loan Payable (Details Textual) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2013
Sep. 25, 2014
Pennvest Loan [Member] | Amortization of Principal Number of Years [Member]                
Term Loan Payment Term     3 years          
Pennvest Loan [Member] | Interest Only Payments Number of Years [Member]                
Term Loan Payment Term     10 years          
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%          
Pennvest Loan [Member]                
Interest Expense, Debt $ 49,373 $ 49,373 $ 98,747 $ 98,747        
Construction Loan 7,754,000   7,754,000          
Line of Credit Facility, Maximum Borrowing Capacity 7,754,000   7,754,000          
Repayments of Long-term Debt         $ 723,000 $ 704,000 $ 574,000  
Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year 741,000   741,000          
Long-term Debt, Maturities, Repayments of Principal in Year Two 760,000   760,000          
Long-term Debt, Maturities, Repayments of Principal in Year Three 4,252,000   4,252,000          
Debt Instrument Accrued Interest and Late Charges 693,332   693,332          
PA-1 [Member]                
Debt Instrument, Debt Default, Amount               $ 8,137,117
Construction Loan $ 7,800,000   $ 7,800,000