Collaboration Agreement with AbbVie - Change in deferred revenue (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Deferral of revenue		$ 19,808
Recognition of unearned revenue	$ 3,565	10,192
Collaboration agreement with AbbVie
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]
Balance at the beginning of the period	23,373
Deferral of revenue		30,000
Recognition of unearned revenue	3,565	10,192
Balance at the end of the period	$ 19,808	$ 19,808