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Accrued Expenses (Tables)
 3 Months Ended
Mar. 31, 2017
Payables and Accruals [Abstract]  
Schedule of Accrued Expenses

Accrued expenses consist of the following (in thousands):

 

     As of March 31,
2017		      As of December 31,
2016		  

Accrued clinical trial costs

    $ 3,083      $ 2,648  

Accrued contract manufacturing expenses

      9        226  

Accrued compensation and benefits

      146        1,080  

Accrued interest

      —          82  

Other accrued expenses

      300        575  
  

 

 

     

 

 

  

Total accrued expenses

    $ 3,538      $ 4,611