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Marketable Securities - Summary of Contractual Maturities of Available-for-sale Debt Securities (Detail) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Marketable Securities [Line Items]
Amortized Cost	$ 797,692	$ 384,487
Fair Value	799,065	$ 384,518
Due within one year [Member]
Marketable Securities [Line Items]
Amortized Cost	627,229
Fair Value	627,772
Due after one year through three years [Member]
Marketable Securities [Line Items]
Amortized Cost	170,463
Fair Value	$ 171,293

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- Definition

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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