Available-for-sale debt securities - Summary of Details of Available-for-sale Debt Securities (Detail) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2024 |
Dec. 31, 2023 |
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| Debt Securities, Available-for-Sale [Line Items] | ||
| Amortized Cost | $ 0 | $ 239,899 |
| Unrealized Gains | 0 | 239 |
| Unrealized Losses | 0 | (15) |
| Fair Value | 0 | 240,123 |
| US Treasury Securities [Member] | ||
| Debt Securities, Available-for-Sale [Line Items] | ||
| Amortized Cost | 0 | 111,379 |
| Unrealized Gains | 0 | 40 |
| Unrealized Losses | 0 | (12) |
| Fair Value | 0 | 111,407 |
| US Government Agencies Debt Securities [Member] | ||
| Debt Securities, Available-for-Sale [Line Items] | ||
| Amortized Cost | 0 | 128,520 |
| Unrealized Gains | 0 | 199 |
| Unrealized Losses | 0 | (3) |
| Fair Value | $ 0 | $ 128,716 |
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- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of unrealized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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