Collaboration agreement with AbbVie - Change in deferred revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Recognition of revenue	$ (1,029)	$ 27,636
Recognition of unearned revenue	(1,029)	(2,364)
Collaboration agreement with AbbVie
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Balance at the beginning of the period	15,982
Recognition of revenue	1,029
Recognition of unearned revenue	(1,000)	$ (2,400)
Balance at the end of the period	$ 14,953