Revenue - Summary of Deferred Revenue Activity (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2021 USD ($)
Movement in Deferred Revenue [Roll Forward]
Balance at beginning of period	$ 355
Additions to deferred revenue	1,187
Recognized as revenue	(1,542)
Balance at end of period	0
NIDA Grant
Movement in Deferred Revenue [Roll Forward]
Balance at beginning of period	355
Additions to deferred revenue	1,187
Recognized as revenue	(1,542)
Balance at end of period	$ 0