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Accrued Expenses (Tables)
9 Months Ended
Sep. 30, 2016
Payables and Accruals [Abstract]  
Schedule of Accrued Expenses

Accrued expenses consisted of the following:

 

     September 30, 2016      December 31, 2015  

Accrued research and development expenses

   $ 3,565       $ 3,188   

Accrued payroll and related expenses

     1,045         900   

Accrued professional fees

     734         699   

Accrued other

     114         167   
  

 

 

    

 

 

 
   $ 5,458       $ 4,954