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Loss Per Share (Tables)
3 Months Ended
Dec. 31, 2016
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
      Three months ended December 31,  
      2015     2016  
  Net loss $ (2,132,673 ) $ (2,194,397 )
               
  Weighted average shares used in basic and diluted computation (note)   17,171,953     19,745,873  
               
  Loss per share $ (0.12 ) $ (0.11 )