Significant agreements - Collaboration revenues (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Significant agreements.
Collaboration revenues	$ 19,530	$ 4,896
Bayer
Significant agreements.
Collaboration revenues	818	0
Novartis
Significant agreements.
Collaboration revenues	1,247	0
Ionis
Significant agreements.
Collaboration revenues	5,854	2,784
Genentech
Significant agreements.
Collaboration revenues	$ 11,611	$ 2,112