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Investments - Summary of Investments (Detail) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2025 | Dec. 31, 2024
Debt Securities, Available-for-Sale [Line Items] |  |
Cost | $ 41,571 | $ 40,252
Gross Unrealized Gains | 285 | 259
Gross Unrealized Losses | (10) | (38)
Fair Value | 41,846 | 40,473
Corporate Debt Securities [Member] |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Cost | 1,480 | 4,249
Gross Unrealized Gains | 0 | 1
Gross Unrealized Losses | (10) | (38)
Fair Value | 1,470 | 4,212
Government securities [Member] |  |
Debt Securities, Available-for-Sale [Line Items] |  |
Cost | 40,091 | 36,003
Gross Unrealized Gains | 285 | 258
Gross Unrealized Losses | 0 | 0
Fair Value | $ 40,376 | $ 36,261

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