Investments - Summary of Investment (Detail) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Cash and Cash Equivalents [Member]
Debt Securities, Available-for-Sale [Line Items]
Estimated Fair Value	$ 513,137	$ 402,805
Other Long-term Investment [Member]
Debt Securities, Available-for-Sale [Line Items]
Estimated Fair Value		2,462
Estimate of Fair Value Measurement [Member] \| Cash and Cash Equivalents [Member]
Debt Securities, Available-for-Sale [Line Items]
Estimated Fair Value	461,056	367,340
Estimate of Fair Value Measurement [Member] \| Other Long-term Investment [Member]
Debt Securities, Available-for-Sale [Line Items]
Estimated Fair Value		2,462
Estimate of Fair Value Measurement [Member] \| Auction Rate Securities [Member] \| Other Long-term Investment [Member]
Debt Securities, Available-for-Sale [Line Items]
Estimated Fair Value		2,462
Estimate of Fair Value Measurement [Member] \| Money Market Funds [Member] \| Cash and Cash Equivalents [Member]
Debt Securities, Available-for-Sale [Line Items]
Estimated Fair Value	461,056	367,340
Portion at Other than Fair Value Measurement [Member] \| Cash on hand [Member] \| Cash and Cash Equivalents [Member]
Debt Securities, Available-for-Sale [Line Items]
Estimated Fair Value	$ 52,081	$ 35,465

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details