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Collaboration Agreements - Additional Information (Detail) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2019 | Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |
Recognition of revenue |  | $ 152 | $ 246 | $ 396 | $ 246 |
Current deferred revenue |  | 149 |  | 149 |  | $ 531
Ginkgo Collaboration |  |  |  |  |  |
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |
Prepayment to related party for collaboration agreement | $ 30,000 |  |  | 30,000 |  |
Related party transaction collaboration agreement, initial term | 5 years |  |  |  |  |
Current pre-paid research and development |  | 1,700 |  | 1,700 |  |
Non-current pre-paid research and development |  | 7,800 |  | 7,800 |  |
Roche Collaboration and Option Agreement |  |  |  |  |  |
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |
Recognition of revenue |  |  |  | 400 |  |
Roche Collaboration and Option Agreement | Current Liabilities |  |  |  |  |  |
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items] |  |  |  |  |  |
Current deferred revenue |  | $ 100 |  | $ 100 |  |

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