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Fair Value Measurements and Marketable Securities - Summary of Cash Equivalents and Marketable Securities (Detail) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Cash equivalents $ 85,402 $ 26,702
Marketable securities 85,295 150,236
Total cash equivalents and marketable securities 170,697 176,938
US Treasury Bills [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Marketable securities 4,992 2,947
U.S. Government Securities [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Marketable securities 80,303 147,289
Money Market Funds [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Cash equivalents 85,402 26,702
Quoted Prices in Active Markets, (Level 1) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Cash equivalents 85,402 26,702
Marketable securities 4,992 2,947
Total cash equivalents and marketable securities 90,394 29,649
Quoted Prices in Active Markets, (Level 1) [Member] | US Treasury Bills [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Marketable securities 4,992 2,947
Quoted Prices in Active Markets, (Level 1) [Member] | Money Market Funds [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Cash equivalents 85,402 26,702
Significant Other Observable Inputs (Level 2) [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Marketable securities 80,303 147,289
Total cash equivalents and marketable securities 80,303 147,289
Significant Other Observable Inputs (Level 2) [Member] | U.S. Government Securities [Member]    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Marketable securities $ 80,303 $ 147,289