Collaboration agreements - Other Revenue (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Collaboration agreements
Collaboration revenue	$ 7,802,000	$ 2,036,000
Asana BioSciences | Limited services
Collaboration agreements
Collaboration revenue	0	$ 300,000
Asana BioSciences | Development Milestone Achieved
Collaboration agreements
Collaboration revenue	$ 2,500,000