Stock-based compensation (Details 2) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Stock-based compensation expense | $ 907 | $ 505 |
| Cost of goods [Member] | ||
| Stock-based compensation expense | 36 | |
| Research and development [Member] | ||
| Stock-based compensation expense | 275 | 244 |
| General and administrative [Member] | ||
| Stock-based compensation expense | $ 596 | $ 261 |