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Note 3 - Stock-based Compensation (Tables)
9 Months Ended
Mar. 31, 2013
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
%