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Fair Value Measurements and Financial Instruments - Cash Equivalents, Short-term Investments and Held-to-maturity Debt Securities (Detail) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 67,184	$ 42,726
Estimated Fair Value	67,184	42,726
Money Market Funds
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	26,654	3,300
Estimated Fair Value	26,654	3,300
Short-term Bank Deposits
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	19,647	14,858
Estimated Fair Value	19,647	14,858
Long-term Certificates of Deposit
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	20,317	24,568
Estimated Fair Value	20,317	24,568
Cash and Cash Equivalents
Schedule Of Available For Sale Securities [Line Items]
Estimated Fair Value	26,654	$ 3,300
Short-Term Investments
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	566
Estimated Fair Value	$ 566

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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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