LEASES - Lease Costs (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Lessee, Lease, Description [Line Items] | ||||
| Operating lease cost | $ 76 | $ 68 | $ 148 | $ 141 |
| Short-term lease cost | 140 | 9 | 141 | 12 |
| Total lease cost | 216 | 77 | 289 | 153 |
| Research and development | ||||
| Lessee, Lease, Description [Line Items] | ||||
| Total lease cost | 215 | 75 | 287 | 148 |
| General and administrative | ||||
| Lessee, Lease, Description [Line Items] | ||||
| Total lease cost | $ 1 | $ 2 | $ 2 | $ 5 |