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Net Loss Per Share (Tables)
6 Months Ended
Jun. 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     Six Months Ended
      June 30,     June 30,
      2017     2016     2017     2016
Numerator:                        
Net loss available for common shareholders - basic and diluted   $ (5,494)   $ (3,476)   $ (11,141)   $ (7,032)
                         
Denominator:                        
Weighted-average common shares outstanding - basic and diluted       69,373      51,567      68,747      49,566 
                         
Net loss per share - basic and diluted     $ (0.08)   $ (0.07)   $ (0.16)   $ (0.14)