STOCK BASED COMPENSATION - Stock based compensation expense (Details) - USD ($) |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| STOCK BASED COMPENSATION | ||
| Stock based compensation expense | $ 445,000 | $ 360,000 |
| Unrecognized stock compensation expense | $ 7,300,000 | |
| Unrecognized stock compensation expense expected to be recognized over the remaining weighted average service period | 3 years 8 months 12 days | |
| Research and development expense | ||
| STOCK BASED COMPENSATION | ||
| Stock based compensation expense | $ 222,000 | 120,000 |
| General and administrative expenses | ||
| STOCK BASED COMPENSATION | ||
| Stock based compensation expense | $ 223,000 | $ 240,000 |