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Note 5 - Net Investment in Leases (Details Textual) - USD ($)
12 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Direct Costs of Leased and Rented Property or Equipment $ 2,500,000 $ 2,600,000
Non-Recourse Debt 279,000 $ 4,449,000
Deferred Interest Expense [Member]    
Non-Recourse Debt 3,000  
Nonrecourse Debt Relating to the Discontinuing of Lease Receivables [Member]    
Non-Recourse Debt $ 279,000  
Nonrecourse Debt [Member]    
Debt Instrument, Interest Rate, Effective Percentage 3.00%