Revenue and operating segments (Details 4) - SEK (kr) kr in Thousands |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| IfrsStatementLineItems [Line Items] | ||
| Total non-current assets | kr 1,392,407 | kr 1,501,694 |
| Sweden [Member] | ||
| IfrsStatementLineItems [Line Items] | ||
| Total non-current assets | 459,502 | 488,830 |
| United States [Member] | ||
| IfrsStatementLineItems [Line Items] | ||
| Total non-current assets | 623,046 | 834,603 |
| Germany [Member] | ||
| IfrsStatementLineItems [Line Items] | ||
| Total non-current assets | 169,704 | 78,608 |
| All Other Countries [Member] | ||
| IfrsStatementLineItems [Line Items] | ||
| Total non-current assets | kr 140,154 | kr 99,653 |