Quarterly report pursuant to Section 13 or 15(d)

Prepaid Expenses and Other Current Assets - Summary Of Prepaid Expenses and Other Current Assets (Detail)

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Prepaid Expenses and Other Current Assets - Summary Of Prepaid Expenses and Other Current Assets (Detail) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Prepaid Expense and Other Assets, Current [Abstract]    
Prepaid research and development costs $ 4,882 $ 2,358
Government contract and grant agreement receivables 4,419 1,081
Prepaid insurance premiums 1,098 649
Other prepaid expenses 157 77
Total prepaid expenses and other current assets $ 10,556 $ 4,165