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Net Loss Per Share
 6 Months Ended 12 Months Ended
Jun. 30, 2017
Dec. 31, 2016
Earnings Per Share [Abstract]    
Net Loss Per Share

9. Net Loss Per Share

Basic and diluted earnings per share are calculated as follows:

 

     Three Months Ended June 30,      Six Months Ended June 30,  
     2017      2016      2017      2016  

Numerator:

            

Net income (loss) (in thousands)

    $ (8,404 )     $ 5,389      $ (20,122 )     $ (11,104 ) 
  

 

 

     

 

 

     

 

 

     

 

 

  

Denominator:

            

Weighted average number of common shares outstanding

      37,421,273        9,101,730        31,944,243        9,035,173  

Effect of dilutive securities

            

Stock options

      —          33,864        —          —    

Warrants

      —          138,273        —          —    
  

 

 

     

 

 

     

 

 

     

 

 

  

Dilutive potential common shares

      —          172,137        —          —    
  

 

 

     

 

 

     

 

 

     

 

 

  

Shares used in calculating diluted earnings per share

      37,421,273        9,273,867        31,944,243        9,035,173  
  

 

 

     

 

 

     

 

 

     

 

 

  

Basic net income (loss) per share

    $ (0.22 )     $ 0.59      $ (0.63 )     $ (0.30 ) 

Diluted net income (loss) per share

    $ (0.22 )     $ 0.58      $ (0.63 )     $ (0.30 ) 

The following table sets forth the potentially dilutive common shares excluded from the calculation of net loss per common share because their inclusion would be anti-dilutive (in thousands):

 

     Three Months Ended June 30,      Six Months Ended June 30,  
         2017              2016              2017              2016      

Warrants to purchase common stock

      19,557        1,076        19,557        1,871  

Options to purchase common stock

      505        322        505        515  
  

 

 

     

 

 

     

 

 

     

 

 

  

Total

      20,062        1,398        20,062        2,386  
  

 

 

     

 

 

     

 

 

     

 

 

  

 

10. Net Loss Per Share

The Company accounts for and discloses net loss per common share in accordance with FASB ASC Topic 260 “Earnings per Share.” Basic net loss per common share is computed by dividing net loss attributable to common stockholders by the weighted-average number of common shares outstanding. Diluted net loss per common share is computed by dividing net loss attributable to common stockholders by the weighted-average number of common shares that would have been outstanding during the period assuming the issuance of common shares for all potential dilutive common shares outstanding. Potential common shares consist of shares issuable upon the exercise of stock options and warrants.

The following table sets forth the potentially dilutive common shares excluded from the calculation of net loss per common share because their inclusion would be anti-dilutive (in thousands):

 

     December 31,  
     2016      2015  

Warrants to purchase common stock

      2,570        1,115  

Options to purchase common stock

      561        663  
  

 

 

     

 

 

  

Total

      3,131        1,778