Collaboration agreement with AbbVie - Change in deferred revenue (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]
Deferral of revenue			$ (3,393)	$ 23,373
Recognition of revenue	$ (2,364)	$ (4,263)	(3,393)	(6,627)
Collaboration agreement with AbbVie
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Beginning balance			15,982
Recognition of revenue	(2,400)	$ (4,300)	(3,393)	$ (6,600)
Balance at the end of the period	$ 12,589		$ 12,589