Summary of Significant Accounting Policies - Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Stock-Based Compensation Expense | ||
| Total stock-based compensation expense | $ 14,519 | $ 13,802 |
| Performance stock units | ||
| Stock-Based Compensation Expense | ||
| Total stock-based compensation expense | 0 | 1,800 |
| Research and development | ||
| Stock-Based Compensation Expense | ||
| Total stock-based compensation expense | 7,769 | 7,991 |
| General and administrative | ||
| Stock-Based Compensation Expense | ||
| Total stock-based compensation expense | $ 6,750 | $ 5,811 |