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Moderna Collaboration and License Agreement - Narratives (Details) $ in Thousands		1 Months Ended		3 Months Ended		6 Months Ended		30 Months Ended
	Jul. 03, 2024 USD ($)	Jun. 30, 2024 USD ($)	Jan. 31, 2022 USD ($) product target	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) obligation target	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Moderna Collaboration and License Agreement
Collaboration revenues				$ 9,200	$ 3,600	$ 12,600	$ 6,800
Deferred revenue liability		$ 41,909		41,909	46,416	41,909	46,416	$ 41,909	$ 46,413	$ 47,459
Collaboration revenues				9,197	$ 3,560	12,594	$ 6,803
Option Right Collaboration Revenues
Moderna Collaboration and License Agreement
Collaboration revenues				3,800		3,800
Milestones
Moderna Collaboration and License Agreement
Collaboration revenues				2,000		$ 2,000
Collaboration and License Agreement
Moderna Collaboration and License Agreement
Number of potential research target designations | target						12
Collaboration and License Agreement | Research and Development Services
Moderna Collaboration and License Agreement
Variable consideration						$ 73,900
Term of contract						5 years
Noncurrent portion of deferred revenue		41,300		41,300		$ 41,300		41,300
Collaboration and License Agreement | Moderna
Moderna Collaboration and License Agreement
Maximum of research targets | target			12
Number of research targets, designate as development targets | target			12
Number of research targets designated | target			5
Collaboration and License Agreement | Moderna | Research and Development Services
Moderna Collaboration and License Agreement
Upfront non-refundable payment received			$ 45,000			$ 45,000
Number of potential products to develop and commercialize | product			12
Minimum commitment to reimburse research and development costs			$ 10,000
Period of reimbursement of research and development costs			3 years
Number of performance obligations | obligation						2
Collaboration and License Agreement | Moderna | Minimum | Research and Development Services
Moderna Collaboration and License Agreement
Amount receivable per product			$ 247,000
Collaboration and License Agreement | Moderna | Maximum | Research and Development Services
Moderna Collaboration and License Agreement
Amount receivable per product			$ 253,000
Moderna License Agreement | Research and Development Services
Moderna Collaboration and License Agreement
Collaboration revenues								31,600
Moderna License Agreement | Option Right Collaboration Revenues
Moderna Collaboration and License Agreement
Collaboration revenues								3,800
Moderna License Agreement | Moderna
Moderna Collaboration and License Agreement
Milestone payment		2,000		2,000		$ 2,000		2,000
Collaboration revenues		2,000
Deferred revenue liability		$ 45,000		$ 45,000		45,000		$ 45,000
Decrease in contract with customer, liability						$ 3,800
Moderna License Agreement | Moderna | Subsequent Event
Moderna Collaboration and License Agreement
Proceeds related to collaboration revenue	$ 2,000

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