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Note 15 - Fair Value Measurements (Tables)
9 Months Ended
May. 31, 2015
Disclosure Text Block [Abstract]  
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Table Text Block]
         
Fair Value Measurements
Using Inputs Considered as
 
   
Fair Value as of
May 31, 2015
   
Level 1
   
Level 2
   
Level 3
 
Available for sale securities
  $ 2,527,847     $ 2,527,847     $     $  
         
Fair Value Measurements
Using Inputs Considered as
 
   
Fair Value as of
August 31, 2014
   
Level 1
   
Level 2
   
Level 3
 
Available for sale securities
  $ 5,519,766     $ 5,519,766     $     $