Collaboration agreement with AbbVie - Change in deferred revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Deferral of revenue			$ (6,941)	$ (3,393)
Recognition of revenue	$ (4,015)	$ (2,364)	(6,941)	(3,393)
Collaboration agreement with AbbVie
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Beginning balance			6,941
Deferral of revenue			0
Recognition of revenue	(4,000)	$ (2,400)	(6,941)	$ (3,400)
Balance at the end of the period	$ 0		$ 0