Quarterly report pursuant to Section 13 or 15(d)

Marketable Securities and Fair Value Measurements - Financial Assets at Fair Value on Recurring Basis (Detail)

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Marketable Securities and Fair Value Measurements - Financial Assets at Fair Value on Recurring Basis (Detail) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Jun. 30, 2021
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Total cash equivalents and marketable securities $ 102,972 $ 152,105  
Cash and cash equivalents 26,936 24,983 $ 43,090
Marketable securities, current 77,489 118,061  
Marketable securities, non-current   8,986  
Money Market Funds      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Total cash equivalents and marketable securities 22,989 24,058  
Commercial Paper      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Total cash equivalents and marketable securities 47,910 103,113  
United States Treasury Bills      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Total cash equivalents and marketable securities 29,060 14,023  
Government-Related Debt Securities      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Total cash equivalents and marketable securities 3,013 5,185  
Corporate Bonds      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Total cash equivalents and marketable securities   5,726  
Basis of Fair Value Measurements, Level 1      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Total cash equivalents and marketable securities 22,989 24,058  
Basis of Fair Value Measurements, Level 1 | Money Market Funds      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Total cash equivalents and marketable securities 22,989 24,058  
Basis of Fair Value Measurements, Level 1 | Commercial Paper      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Total cash equivalents and marketable securities 0 0  
Basis of Fair Value Measurements, Level 1 | United States Treasury Bills      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Total cash equivalents and marketable securities 0 0  
Basis of Fair Value Measurements, Level 1 | Government-Related Debt Securities      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Total cash equivalents and marketable securities 0 0  
Basis of Fair Value Measurements, Level 1 | Corporate Bonds      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Total cash equivalents and marketable securities   0  
Basis of Fair Value Measurements, Level 2      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Total cash equivalents and marketable securities 79,983 128,047  
Basis of Fair Value Measurements, Level 2 | Money Market Funds      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Total cash equivalents and marketable securities 0 0  
Basis of Fair Value Measurements, Level 2 | Commercial Paper      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Total cash equivalents and marketable securities 47,910 103,113  
Basis of Fair Value Measurements, Level 2 | United States Treasury Bills      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Total cash equivalents and marketable securities 29,060 14,023  
Basis of Fair Value Measurements, Level 2 | Government-Related Debt Securities      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Total cash equivalents and marketable securities 3,013 5,185  
Basis of Fair Value Measurements, Level 2 | Corporate Bonds      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Total cash equivalents and marketable securities   5,726  
Basis of Fair Value Measurements, Level 3      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Total cash equivalents and marketable securities 0 0  
Basis of Fair Value Measurements, Level 3 | Money Market Funds      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Total cash equivalents and marketable securities 0 0  
Basis of Fair Value Measurements, Level 3 | Commercial Paper      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Total cash equivalents and marketable securities 0 0  
Basis of Fair Value Measurements, Level 3 | United States Treasury Bills      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Total cash equivalents and marketable securities 0 0  
Basis of Fair Value Measurements, Level 3 | Government-Related Debt Securities      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Total cash equivalents and marketable securities 0 0  
Basis of Fair Value Measurements, Level 3 | Corporate Bonds      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Total cash equivalents and marketable securities   0  
Cash Equivalents      
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]      
Cash and cash equivalents $ 25,483 $ 25,058