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Commitments and Contingencies - Additional Information (Details) - USD ($)
1 Months Ended 12 Months Ended
Dec. 31, 2020
Sep. 30, 2020
Dec. 31, 2021
Dec. 31, 2020
Lessee Lease Description [Line Items]        
Lease expense     $ 300,000 $ 2,300,000
Operating lease, cash payments     $ 200,000 3,000,000.0
Operating lease weighted-average remaining lease term     1 year 10 months 24 days  
Operating lease weighted-average discount rate     3.30%  
Waltham Sublease        
Lessee Lease Description [Line Items]        
Expiration date Nov. 30, 2023      
Sublease rent per month $ 15,000      
San Diego Sublease        
Lessee Lease Description [Line Items]        
Sublease rent per month   $ 12,000    
Sublease term   7 years    
Sublease cancellable written notice period   30 days    
Payments of sublease     $ 200,000 $ 64,000