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Note 10 - Debt and Commitments and Contingencies (Details Textual)
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Nov. 30, 2015
USD ($)
ft²
a
Jun. 30, 2017
USD ($)
Jun. 30, 2016
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2016
USD ($)
Sep. 30, 2013
USD ($)
Payments to Acquire Property, Plant, and Equipment   $ 57,000 $ 42,000 $ 251,000 $ 3,670,000  
Operating Leases, Rent Expense   $ 181,000 $ 164,000 $ 537,000 $ 579,000  
Utah [Member] | Building [Member]            
Area of Real Estate Property | ft² 30,700          
Utah [Member] | Land [Member]            
Area of Land | a 3.6          
Utah [Member] | Land and Building [Member]            
Payments to Acquire Property, Plant, and Equipment $ 1,240,000          
Margin Account [Member]            
Proceeds from Issuance of Debt           $ 29,500,000
Margin Account [Member] | Fed Funds Rate [Member]            
Debt Instrument, Basis Spread on Variable Rate           0.50%
Debt Instrument, Interest Rate, Effective Percentage   1.75%   1.75%    
Real Estate Bank Loan Secured by Logan Office [Member]            
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate 4.66%          
Debt Instrument, Periodic Payment $ 17,600          
Loans Payable to Bank $ 2,260,000 $ 2,100,000   $ 2,100,000