Property and Equipment, Net (Tables)
 12 Months Ended
Dec. 31, 2016
Property, Plant and Equipment [Abstract]  
Property and Equipment, Net

Property and equipment, net consists of the following:

 

     December 31,  
     2016      2015  

Computer and office equipment

    $ 149      $ 314  

Laboratory equipment

      795        232  

Furniture and fixtures

      173        155  

Software

      —          126  

Leasehold improvements

      8,582        7,453  
  

 

 

     

 

 

  
   $ 9,699      $ 8,280  

Less accumulated depreciation and amortization

      8,085        7,017  
  

 

 

     

 

 

  

Property and equipment, net

    $ 1,614      $ 1,263