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Cash, Cash Equivalents and Investments - Components of Cash, Cash Equivalents and Investments (Detail) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Cash | $ 170,852 | $ 183,242
Money market instruments | 15,242 | 19,413
Cash and cash equivalents | 186,094 | 202,655
Debt securities, available-for-sale, current | 59,956 | 129,392
Non-current investments | 340,898 | 244,230
Total | 586,948 | 576,277
Treasury Bills [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Debt securities, available-for-sale, current | 2,487 | 0
Long-term investments | 43,147 | 43,523
Asset-Backed Securities [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Debt securities, available-for-sale, current | 737 | 3,551
Long-term investments | 12,577 | 15,763
Corporate Bonds [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Debt securities, available-for-sale, current | 55,742 | 124,851
Long-term investments | 285,174 | 183,965
Sovereign Bonds [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Debt securities, available-for-sale, current | 990 | 990
Long-term investments | $ 0 | $ 979

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