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Marketable Securities - Additional Information (Detail) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Marketable Securities [Line Items] |  |
Marketable securities | $ 193,900,000 | $ 197,800,000
Marketable securities unrealized gain | 1,800,000 | 1,900,000
Marketable securities unrealized loss | 100,000 |
Marketable securities unrealized loss, Less than twelve months | 451,900,000 | 463,500,000
Marketable securities unrealized loss, more than twelve months | 31,800,000 | 138,400,000
Marketable securities, non-current | 0 | 1,973,000
Marketable equity securities unrealized gain | 4,100,000 |
Net unrealized gain on equity securities | 4,100,000 |
Available-for-sale debt securities remaining maturities greater than thirty months | $ 0 |
Other Comprehensive Income (Loss) [Member] |  |
Marketable Securities [Line Items] |  |
Marketable securities unrealized gain |  | $ 17,500,000

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