Quarterly report pursuant to Section 13 or 15(d)

Accrued Expenses (Details)

v3.8.0.1
Accrued Expenses (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Accrued Liabilities    
External research and preclinical development $ 6,682 $ 5,875
Employee compensation and benefits 1,134 2,494
Professional fees 1,121 1,225
Facilities 43 134
Total accrued expenses $ 8,980 $ 9,728