Collaboration and License Agreements - Viridian (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Collaborative Agreements disclosures
Revenue from contract with customer	$ 83,153	$ 14,162	$ 133,022	$ 52,240
License and milestone fees
Collaborative Agreements disclosures
Revenue from contract with customer	$ 40	$ 6,973	$ 15,071	$ 37,865