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Fair Value Measurements - Additional Information (Detail) - USD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2023
Dec. 31, 2022
Sep. 30, 2022
Debt Instrument Fair Value Carrying Value [Line Items]      
Transfers among the Level 1, Level 2 and Level 3 categories $ 0   $ 0
Impairment of assets 0 $ 0  
US Treasury Bond Securities | Corporate Bonds and Municipal Securities [Member]      
Debt Instrument Fair Value Carrying Value [Line Items]      
Marketable securities fair value held to maturity $ 82,300,000 $ 211,200,000  
Maximum [Member] | US Treasury Bond Securities | U.S. Corporate Bonds [Member]      
Debt Instrument Fair Value Carrying Value [Line Items]      
Marketable securities, remaining contractual maturities 1 year 1 year  
Maximum [Member] | US Treasury Bond Securities | Corporate Bonds and Municipal Securities [Member]      
Debt Instrument Fair Value Carrying Value [Line Items]      
Marketable securities held, maturity period 2 years 2 years  
Minimum [Member] | US Treasury Bond Securities | Corporate Bonds and Municipal Securities [Member]      
Debt Instrument Fair Value Carrying Value [Line Items]      
Marketable securities held, maturity period 1 year 1 year