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Fair Value of Financial Instruments - Summary of Contractual Maturities of Short and Long Term Investments (Detail) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
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Fair Value Disclosures [Abstract] |  |
Amortized Cost Basis, Due within one year | $ 1,064,497 | $ 1,089,250
Amortized Cost Basis, Due after 1 year through 2 years | 152,367 | 114,997
Amortized Cost | 1,216,864 | 1,204,247
Aggregate Fair Value, Due within one year | 1,061,526 | 1,081,662
Aggregate Fair Value, Due after 1 year through 2 years | 150,861 | 112,791
Aggregate Fair Value, Total | $ 1,212,387 | $ 1,194,453

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