STOCK-BASED COMPENSATION - Schedule of 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] | ||
| Total stock-based compensation expense | $ 6,199 | $ 8,863 |
| Research and development | ||
| Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||
| Total stock-based compensation expense | 2,287 | 5,265 |
| General and administrative | ||
| Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||
| Total stock-based compensation expense | $ 3,912 | $ 3,598 |