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Note 14 - Fair Value Measurements (Tables)
3 Months Ended
Nov. 30, 2014
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
November 30, 2014
   
Level 1
   
Level 2
   
Level 3
 
Available for sale securities
  $ 4,024,599     $ 4,024,599     $     $  
Cash equivalents
    2,598,739       2,598,739              
Total
  $ 6,623,338     $ 6,623,338     $     $  
         
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     $     $  
Cash equivalents
    2,477,017       2,477,017              
Total
  $ 7,996,783     $ 7,996,783     $     $