Collaboration agreement with AbbVie - Change in deferred revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Deferral of revenue			$ (6,303)	$ 19,808
Recognition of revenue	$ (2,910)	$ (3,565)	(6,303)	(10,192)
Collaboration agreement with AbbVie
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Beginning balance			15,982
Recognition of revenue	(2,900)	$ (3,600)	(6,303)	$ (10,200)
Balance at the end of the period	$ 9,679		$ 9,679