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Note 15 - Supplemental Cash Flow Information (Tables)
 6 Months Ended
Feb. 28, 2017
Notes Tables  
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]
    Three Months Ended
    February 28,
2017		   February 29,
2016
Cash paid for interest   $
3,470
     $
10,796
  
Cash paid for income taxes    
—
      
—
  
    Six Months Ended
    February 28,
2017		   February 29,
2016
Cash paid for interest   $
8,093
     $
15,522
  
Cash paid for income taxes    
—
      
—