Quarterly report pursuant to Section 13 or 15(d)

Accrued Liabilities - Summary of Accrued Liabilities (Detail)

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Accrued Liabilities - Summary of Accrued Liabilities (Detail) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Payables and Accruals [Abstract]    
Accrued research and development service fees $ 3,695 $ 801
Accrued compensation costs 1,798 2,069
Accrued professional fees 618 456
Accrued facilities operation expenses 122 173
Other accrued liabilities 19 111
Total accrued liabilities $ 6,252 $ 3,610