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Note 9 - Stockholders' Equity (Tables)
9 Months Ended
May. 31, 2015
Stockholders' Equity Note [Abstract]  
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
Options Exercised
Exercise Price
18,000
$ 7.65
2,333
10.20
Options Exercised
Exercise Price
44,000
$ 7.65