Revenue - Other Collaborative Arrangement Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Collaboration revenue recognized in the period from:
Revenue from collaborative arrangements	$ 6	$ 172	$ 12	$ 181
Viatris
Collaboration revenue recognized in the period from:
Revenue from collaborative arrangements	$ 6	6	$ 12	12
Alfasigma
Collaboration revenue recognized in the period from:
Revenue from collaborative arrangements		$ 166		$ 169