Collaboration agreements - Other Revenue (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Collaboration agreements
Collaboration revenue	$ 10,654,000	$ 4,284,000	$ 18,456,000	$ 6,320,000
Asana BioSciences | Limited services
Collaboration agreements
Collaboration revenue	$ 0	$ 0	0	$ 300,000
Asana BioSciences | Development Milestone Achieved
Collaboration agreements
Collaboration revenue			$ 2,500,000