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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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