Investments - Summary of Investment (Detail) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Cash and Cash Equivalents [Member]
Debt Securities, Available-for-Sale [Line Items]
Estimated Fair Value	$ 296,099	$ 277,273
Other Long-term Investment [Member]
Debt Securities, Available-for-Sale [Line Items]
Estimated Fair Value	2,664	2,641
Estimate of Fair Value Measurement [Member] | Cash and Cash Equivalents [Member]
Debt Securities, Available-for-Sale [Line Items]
Estimated Fair Value	264,309	246,745
Estimate of Fair Value Measurement [Member] | Other Long-term Investment [Member]
Debt Securities, Available-for-Sale [Line Items]
Estimated Fair Value	2,664	2,641
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	2,664	2,641
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	264,309	246,745
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	$ 31,790	$ 30,528