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Commitments and Contingencies - Additional Information 1 (Details)
Dec. 31, 2020
USD ($)
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]  
Payments based upon the achievement of certain regulatory milestones $ 300,000
License Agreement with Salk Institute | Maximum  
Collaborative Arrangements And Noncollaborative Arrangement Transactions [Line Items]  
Milestone payments payable $ 6,500,000