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Note 3 - Stock-based Compensation (Tables)
6 Months Ended
Dec. 31, 2014
Notes Tables  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
Risk-free interest rate
    1.0
%
Expected life (years)
    6.0  
Expected stock volatility
    52.3
%
Expected dividend yield
    4.0
%