Collaboration Agreement with AbbVie - Change in deferred revenue (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2023
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Deferral of revenue		$ 23,373
Recognition of unearned revenue	$ 4,263	6,627
Collaboration agreement with AbbVie
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Balance at the beginning of the period	27,636
Deferral of revenue		30,000
Recognition of unearned revenue	4,263	6,627
Balance at the end of the period	$ 23,373	$ 23,373