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Supplemental Financial Information - Schedule of Prepaid Expenses and Other Current Assets (Detail) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
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Disclosure Of Prepaid Expenses And Other Current Assets [Line Items] |  |
Prepaid insurance | $ 1,666 | $ 1,514
Prepaid raw materials | 201 | 83
Research and development service agreements | 172 | 2,591
Dues and subscriptions | 121 | 96
Other | 206 | 140
Total prepaid expenses and other current assets | $ 2,366 | $ 4,424

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