Stock options, retention securities and warrants - Fair value of options granted (Details) - Y |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Minimum | ||
| Stock options, retention securities and warrants | ||
| Risk-free interest rate | 2.72% | 3.02% |
| Expected term in years | 4 | 5 |
| Expected stock price volatility | 65.70% | 68.60% |
| Maximum | ||
| Stock options, retention securities and warrants | ||
| Risk-free interest rate | 3.19% | 3.76% |
| Expected term in years | 9.2 | 10 |
| Expected stock price volatility | 73.70% | 70.00% |