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Note N - Income Taxes (Details Textual) - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Accrued Liabilities, Current [Member]    
Deferred Tax Liabilities, Net, Current   $ 82
Foreign Tax Authority [Member] | Earliest Tax Year [Member]    
Open Tax Year 2012  
Foreign Tax Authority [Member] | Latest Tax Year [Member]    
Open Tax Year 2016  
Domestic Tax Authority [Member] | Earliest Tax Year [Member]    
Open Tax Year 2013  
Deferred Tax Assets, Net of Valuation Allowance, Current 4,863
Deferred Tax Assets, Valuation Allowance 3,123 3,577
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount 454  
Undistributed Earnings of Foreign Subsidiaries 3,039  
Unrecognized Tax Benefits that Would Impact Effective Tax Rate 790  
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued $ 61 $ 62