Property, Plant and Equipment, Net - Construction in progress (Details) - USD ($) $ in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Property, Plant and Equipment | ||
| Total construction in progress | $ 12,030 | $ 6,858 |
| Continuous electrolyte pilot manufacturing line | ||
| Property, Plant and Equipment | ||
| Total construction in progress | 10,978 | 5,214 |
| Cell safety abuse lab | ||
| Property, Plant and Equipment | ||
| Total construction in progress | 94 | |
| EIC | ||
| Property, Plant and Equipment | ||
| Total construction in progress | 111 | 111 |
| Other capital projects | ||
| Property, Plant and Equipment | ||
| Total construction in progress | $ 941 | $ 1,439 |