Annual report pursuant to Section 13 and 15(d)

Accrued Expense (Details)

v3.19.1
Accrued Expense (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Payables And Accruals [Abstract]    
Accrued research and development expenses $ 587 $ 609
Accrued employee bonus compensation 1,197 763
Employee withholdings 21 29
Other accrued expenses 298 304
Total accrued expenses $ 2,103 $ 1,705