Accounts Payable and Accrued Expenses
12 Months Ended
Dec. 31, 2016
Payables and Accruals [Abstract]  
Accounts Payable and Accrued Expenses

8. Accounts Payable and Accrued Expenses

Accounts payable and accrued expenses consist of the following:

 

     December 31,  
     2016      2015  

Accounts payable

   $ 4,738      $ 1,965  

Accrued research projects

     4,352        1,542  

Accrued professional fees

     163        371  

Accrued compensation and benefits

     1,514        1,204  

Accrued other

     766        186  
  

 

 

    

 

 

 
   $ 11,533      $ 5,268