Stock award plan - Performance-based Restricted Stock Units (Details) - Chief Executive Officer - shares |
6 Months Ended | 12 Months Ended |
|---|---|---|
Jun. 30, 2026 |
Dec. 31, 2024 |
|
| Unvested performance based restricted stock units | ||
| Number of Shares | ||
| Balance at the beginning of the period (in shares) | 140,625 | |
| PSUs with performance or market conditions granted during the period | 37,500 | |
| Vested (in shares) | (25,000) | |
| Balance at the end of the period (in shares) | 153,125 | |
| Performance based | ||
| Number of Shares | ||
| Balance at the beginning of the period (in shares) | 25,000 | |
| PSUs with performance or market conditions granted during the period | 37,500 | 25,000 |
| Vested (in shares) | (25,000) | |
| Balance at the end of the period (in shares) | 37,500 | |
| Market Conditions | ||
| Number of Shares | ||
| Balance at the beginning of the period (in shares) | 115,625 | |
| Balance at the end of the period (in shares) | 115,625 |