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Loss Per Share
 6 Months Ended
Jun. 30, 2017
Loss Per Share [Text Block]
17.

Loss Per Share

The following is the calculation of loss per share:

      Three months ended June 30,     Six months ended June 30,  
      2016     2017     2016     2017  
  Net loss $ (2,668,641 ) $ (3,753,380 ) $ (4,571,799 ) $ (5,821,596 )
                           
  Weighted average shares used in basic and diluted computation (note)   17,284,432     20,402,083     17,256,932     20,059,236  
                           
  Loss per share $ (0.15 ) $ (0.18 ) $ (0.26 ) $ (0.29 )

  Note:

Including 50,835 vested restricted shares granted pursuant to the 2015 Plan that were not yet issued for the three and six months ended June 30, 2016 and 218,834 vested restricted shares granted pursuant to the 2015 plan that were not yet issued for the three and six months ended June 30, 2017.

For the three and six months ended June 30, 2016 and 2017, 885,000 and 479,666 unvested restricted shares were anti-dilutive and excluded from shares used in the diluted computation.