Cash, Cash Equivalents And Marketable Securities - Additional Information (Detail) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Cash Equivalents And Marketable Securities [Abstract]
Fair value of the debt securities	$ 326.1	$ 115.0

Amount 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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