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Note 9 - Total Comprehensive Income (Tables)
12 Months Ended
Aug. 31, 2012
Schedule of Comprehensive Income (Loss) [Table Text Block]
   
2012
   
2011
 
Net income attributable to NTIC
  $ 3,448,196     $ 3,900,120  
Other comprehensive income (loss) –  foreign currency translation  adjustment
    (2,219,357 )     1,792,467  
Total comprehensive income (loss) attributable to NTIC
  $ 1,228,839     $ 5,692,587