Moderna Collaboration and License Agreement - Schedule of Changes in Deferred Revenue (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Movement in Deferred Revenue [Roll Forward]
Balance at the beginning of the period	$ 47,459	$ 0
Deferral of revenue	9,356	52,333
Recognition of unearned revenue	(10,630)	(6,103)
Balance at the ending of the period	$ 46,185	$ 46,230