Stock-Based Compensation - Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||
| Stock-based compensation expense | $ 5,259 | $ 213 |
| Research and development | ||
| Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||
| Stock-based compensation expense | 1,974 | 120 |
| General and administrative | ||
| Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||
| Stock-based compensation expense | $ 3,285 | $ 93 |