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Net Loss per Share (Tables)
9 Months Ended
Sep. 30, 2015
Net Loss Per Share Tables  
Potentially dilutive securities

 

    As of September 30,  
    2015     2014  
Stock options     3,243,041       242,893  
Restricted stock awards      2,300,850        —  
Redeemable convertible preferred stock           1,250,000  
Preferred stock     22,482,400          2,881,811  
Common stock warrants     5,959,668       2,133,386  
Total     33,985,959       6,508,090