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Note 7. Stock-based Compensation (Details) (USD $)
3 Months Ended 9 Months Ended
May 31, 2014
May 31, 2014
Details    
Shares available for grant 1,808,000 1,808,000
Granted   127,000
Exercise price, lower limit   $ 1.19
Grant date fair value per share   $ 0.62
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 10 months 6 days  
Unrecognized stock-based compensation expense $ 975,000 $ 975,000
Closing stock price $ 1.04 $ 1.04