Financial instruments (Details 7) - SEK (kr) kr in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Notes and other explanatory information [abstract] | ||
| Deposits | kr 2,573 | kr 12,422 |
| Trade receivables | 21,015 | 21,148 |
| Accrued income | 29,516 | 34,121 |
| Restricted cash | 32,869 | |
| Cash | 278,825 | 74,165 |
| Total | kr 331,929 | kr 174,725 |