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Note 13 - Fair Value Measurements (Tables)
6 Months Ended
Feb. 28, 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
February 28, 2014
   
Level 1
   
Level 2
   
Level 3
 
Cash equivalents
  $ 3,523,000     $ 3,523,000     $     $  
         
Fair Value Measurements
Using Inputs Considered as
 
   
Fair Value as of
August 31, 2013
   
Level 1
   
Level 2
   
Level 3
 
Cash equivalents
  $ 1,020,000     $ 1,020,000     $     $