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Note 18 - Fair Value Measurements (Tables)
 12 Months Ended
Aug. 31, 2016
Notes Tables  
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Table Text Block]
        Fair Value Measurements
Using Inputs Considered as
    Fair value as of
August 31, 2016		   Level 1   Level 2   Level 3
Available for sale securities   $ 2,243,864     $ 2,243,864     $ —     $ —  
        Fair Value Measurements
Using Inputs Considered as
    Fair value as of
August 31, 2015		   Level 1   Level 2   Level 3
Available for sale securities   $ 2,027,441     $ 2,027,441     $ —     $ —