Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Commitments And Contingencies Disclosure [Line Items]
Rental expense	$ 2.0	$ 1.8
Cambridge, MA
Commitments And Contingencies Disclosure [Line Items]
Lease expiration date	Jan. 31, 2021
Boston, MA
Commitments And Contingencies Disclosure [Line Items]
Lease expiration date	May 19, 2025
Sublease description	The Company executed a sublease for laboratory and office space in Boston, MA effective in December 2020 with rent beginning in January 2021.