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Cash, Cash Equivalents, Restricted Cash And Investments - Summary of Unrealized Gains and Losses and Estimated Fair Value of Cash Equivalents and Investments (Detail) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | $ 366,111 | $ 460,303
Gross Unrealized Gains | 341 | 349
Gross Unrealized Losses | (171) | (2,306)
Estimated Fair Value | 366,281 | 458,346
Cash and money market funds [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | 33,204 | 25,131
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | 0
Estimated Fair Value | 33,204 | 25,131
Commercial Paper [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | 0 | 16,374
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | (14)
Estimated Fair Value | 0 | 16,360
Corporate Notes And Bonds [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | 45,823 | 176,793
Gross Unrealized Gains | 22 | 38
Gross Unrealized Losses | (53) | (1,854)
Estimated Fair Value | 45,792 | 174,977
Municipal Bonds [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | 0 | 4,990
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 0 | (43)
Estimated Fair Value | 0 | 4,947
US Government Corporations and Agencies Securities [Member] |  |
Cash and Cash Equivalents [Line Items] |  |
Amortized Cost | 287,084 | 237,015
Gross Unrealized Gains | 319 | 311
Gross Unrealized Losses | (118) | (395)
Estimated Fair Value | $ 287,285 | $ 236,931

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