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Net Loss Per Share (Tables)
9 Months Ended
Sep. 30, 2017
Net Loss Per Share Tables  
Net Loss Per Share (Tables)

The components of basic and diluted net loss per share were as follows (in thousands, except loss per share data):

      Three Months Ended     Nine Months Ended
      September 30,     September 30,
      2017     2016     2017     2016
Numerator:                        
Net loss available for common shareholders - basic and diluted   $ (5,241)   $ (4,070)   $ (16,382)   $ (11,102)
                         
Denominator:                        
Weighted-average common shares outstanding - basic and diluted       74,922      52,111      70,828      50,421 
                         
Net loss per share - basic and diluted     $ (0.07)   $ (0.08)   $ (0.23)   $ (0.22)