Grant Agreement - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Grant Agreement [Line Items]
Restricted Cash	$ 1.6
BMSF Grant
Grant Agreement [Line Items]
Grant Received	10.0
Funding received	6.0	$ 4.0
Revenue from grant	7.8	1.6
Revenue since inception	9.4
Restricted Cash	0.6	2.3
Deferred revenue	$ 0.6	$ 2.3