Convertible Preferred Stock, Stockholders' Equity, and Stock-Based Compensation - Summary of Stock-Based Compensation Expense (Detail) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||
| Stock-based compensation expense | $ 6,821 | $ 6,980 |
| Research and development [Member] | ||
| Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||
| Stock-based compensation expense | 3,153 | 3,414 |
| General and administrative [Member] | ||
| Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||
| Stock-based compensation expense | $ 3,668 | $ 3,566 |