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Investments - Additional Information (Detail) $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2023 USD ($) | Dec. 31, 2023 Security | Dec. 31, 2024 Security
Investments, Debt and Equity Securities [Abstract] |  |  |
Available-for-sale investment securities contractual maturity dates |  | less than one year |
Number of available-for-sale investment securities in unrealized loss position | Security |  | 21 | 17
Proceeds from sales of securities | $ 183.0 |  |
Net realized losses | $ 0.5 |  |

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