STOCK BASED COMPENSATION - Stock based compensation expense (Details) - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| STOCK BASED COMPENSATION | ||
| Stock based compensation expense | $ 1,150,000 | $ 1,260,000 |
| Unrecognized stock compensation expense | $ 2,500,000 | |
| Unrecognized stock compensation expense expected to be recognized over the remaining weighted average service period | 3 years 4 months 6 days | |
| Research and development expense | ||
| STOCK BASED COMPENSATION | ||
| Stock based compensation expense | $ 400,000 | 293,000 |
| General and administrative expenses | ||
| STOCK BASED COMPENSATION | ||
| Stock based compensation expense | $ 750,000 | $ 967,000 |