Share-based payments (Details) - kr / shares
|
12 Months Ended |
Dec. 31, 2025 |
Dec. 31, 2024 |
| Notes and other explanatory information [abstract] |
|
|
| Number of option, outstanding beginning |
1,287,064
|
1,180,392
|
| Weighted average exercise price, beginning |
kr 115.98
|
kr 119.73
|
| Weighted average exercise price, granted during the year |
1,228,156
|
388,420
|
| Weighted average exercise price, granted during the year |
kr 71.54
|
kr 100.54
|
| Number of option, forfeited during the year |
(41,481)
|
(96,591)
|
| Weighted average exercise price, forfeited during the year |
kr 197.26
|
kr 111.90
|
| Number of option, exercised during the year |
|
|
| Weighted average exercise price, exercised during the year |
|
|
| Number of option, expired during the year |
(556,210)
|
(185,157)
|
| Weighted average exercise price, expired during the year |
kr 105.13
|
kr 109.66
|
| Number of option, outstanding ending |
1,917,529
|
1,287,064
|
| Weighted average exercise price, outstanding ending |
kr 88.91
|
kr 115.98
|
| Number of option, exercisable at the end of the year |
1,419,355
|
1,153,020
|
| Number of option, exercisable at the end of the year |
kr 94.36
|
kr 111.43
|