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Accrued Expenses - Schedule of Accrued Expenses (Details) - USD ($)
$ in Thousands
Sep. 30, 2020
Dec. 31, 2019
Payables And Accruals [Abstract]    
Clinical expenses $ 2,919 $ 2,497
Compensation, excluding taxes 2,499 3,525
Other [1] 667 925
Total accrued expenses $ 6,085 $ 6,947
[1] 1 Other consists of various accrued expenses, with no individual item accounting for more than 5% of current liabilities at September 30, 2020 and December 31, 2019.