Fair Value Measurements - Summary of Fair Value of Financial Instruments (Detail) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Thousands |
Sep. 30, 2024 |
Dec. 31, 2023 |
|---|---|---|
| U.S. Treasury Money Market Funds [Member] | ||
| Cash equivalents: | ||
| Cash equivalents | $ 20,438 | $ 17,270 |
| U.S. Government Securities [Member] | ||
| Short-term investments: | ||
| Short-term investments | 198,013 | 135,734 |
| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | U.S. Treasury Money Market Funds [Member] | ||
| Cash equivalents: | ||
| Cash equivalents | 20,438 | 17,270 |
| Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | U.S. Government Securities [Member] | ||
| Short-term investments: | ||
| Short-term investments | $ 198,013 | $ 135,734 |