Redeemable Convertible Preferred Stock Tranche Liability - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Temporary Equity Disclosure [Abstract]
Milestone closing liability	$ 6.2
Additional closing liability	$ 5.0
Change in fair value of redeemable convertible preferred stock tranche liability		$ 2.0