STOCK BASED COMPENSATION EXPENSE - Stock-based compensation expense (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | 12 Months Ended | |||
|---|---|---|---|---|---|---|
Sep. 30, 2025 |
Sep. 30, 2024 |
Sep. 30, 2025 |
Sep. 30, 2024 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| STOCK BASED COMPENSATION EXPENSE | ||||||
| Total stock-based compensation expense | $ 2,364 | $ 51 | $ 5,192 | $ 7,401 | $ 7,735 | $ 1 |
| Weighted average period for unrecognized stock-based compensation cost expected to be recognized | 10 months 24 days | |||||
| Cost of goods sold | ||||||
| STOCK BASED COMPENSATION EXPENSE | ||||||
| Total stock-based compensation expense | 26 | 58 | 115 | $ 130 | ||
| Research and development | ||||||
| STOCK BASED COMPENSATION EXPENSE | ||||||
| Total stock-based compensation expense | 141 | 18 | 318 | 729 | 802 | |
| Sales and marketing | ||||||
| STOCK BASED COMPENSATION EXPENSE | ||||||
| Total stock-based compensation expense | 773 | 29 | 1,582 | 2,597 | 2,808 | $ 1 |
| General and administrative | ||||||
| STOCK BASED COMPENSATION EXPENSE | ||||||
| Total stock-based compensation expense | $ 1,424 | $ 4 | $ 3,234 | $ 3,960 | $ 3,995 | |