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Revenue and Cost of revenue (Additional Information) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Revenue	$ 0	$ 9,000	$ 0	$ 9,000
Collaboration And Licensing Agreement | Ultragenyx Partnership
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Milestone proceeds		9,000		9,000
2015 asset purchase agreement under the collaboration and license agreement with Ultragenyx | Ultragenyx Partnership
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Cost of revenue		$ 3,400		$ 3,100

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