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Stock-Based Awards (Tables)
6 Months Ended
Jun. 30, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary of Stock-Based Compensation Expense Related to Stock Options and Restricted Common Stock

The Company recorded stock-based compensation expense related to stock options and restricted common stock in the following expense categories of its condensed consolidated statements of operations:

 

     Three Months Ended
June 30,
     Six Months Ended
June 30,
 
     2015      2014      2015      2014  

Research and development

   $ 738       $ 99       $ 1,142       $ 168   

General and administrative

     1,201         169         1,854         276   
  

 

 

    

 

 

    

 

 

    

 

 

 
   $ 1,939       $ 268       $ 2,996       $ 444