Quarterly report pursuant to Section 13 or 15(d)

Accrued Expenses - Schedule of Accrued Expenses (Detail)

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Accrued Expenses - Schedule of Accrued Expenses (Detail) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Payables And Accruals [Abstract]    
Accrued research and development expenses $ 950 $ 991
Accrued employee bonus compensation 1,512 2,190
Other accrued expenses 2,146 960
Total accrued expenses $ 4,608 $ 4,141