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Note 3 - Stock-Based Compensation (Tables)
9 Months Ended
Mar. 31, 2013
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
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

%