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Summary of Significant Accounting Policies - Additional Information (Detail)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
USD ($)
Summary Of Significant Accounting Policies [Line Items]  
Accounts receivable $ 3,300
License and collaboration revenue 20,948
Research and Development Expense  
Summary Of Significant Accounting Policies [Line Items]  
Cost of collaboration revenue $ 5,400
Software  
Summary Of Significant Accounting Policies [Line Items]  
Estimated useful lives 3 years
Computer equipment  
Summary Of Significant Accounting Policies [Line Items]  
Estimated useful lives 3 years
Furniture | Minimum  
Summary Of Significant Accounting Policies [Line Items]  
Estimated useful lives 3 years
Furniture | Maximum  
Summary Of Significant Accounting Policies [Line Items]  
Estimated useful lives 7 years
Leasehold improvements | Minimum  
Summary Of Significant Accounting Policies [Line Items]  
Estimated useful lives 3 years
Leasehold improvements | Maximum  
Summary Of Significant Accounting Policies [Line Items]  
Estimated useful lives 7 years
AS 2016-02  
Summary Of Significant Accounting Policies [Line Items]  
Lease practical expedients true