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Net Income (Loss) Per Share (Tables)
9 Months Ended
Sep. 30, 2018
Net Income Loss Per Share  
Net Income (Loss) Per Share (Tables)

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

      Three Months Ended     Nine Months Ended
      September 30,     September 30,
      2018     2017     2018     2017
Numerator:                        
Net income (loss) available for common shareholders - basic   $ 289    $ (5,762)   $ (15,302)   $ (17,367)
Denominator:                        
Weighted-average common shares outstanding - basic     93,073      74,922      84,388      70,828 
     Dilutive incremental share effect from:                        
     Options                
     Nonvested restricted stock units     130             
Weighted-average common shares outstanding - diluted     93,204      74,922      84,388      70,828 
                         
Net income (loss) per share - basic   $ 0.00    $ (0.08)   $ (0.18)   $ (0.25)
Net income (loss) per share - diluted   $ 0.00    $ (0.08)   $ (0.18)   $ (0.25)