Financial instruments (Details 5) - SEK (kr) kr in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| IfrsStatementLineItems [Line Items] | ||
| Consolidated Statements of Loss and Other Comprehensive Income/(Loss) | kr 64,004 | kr (30,720) |
| Effect on equity | (49,845) | (36,478) |
| U S D [Member] | ||
| IfrsStatementLineItems [Line Items] | ||
| Consolidated Statements of Loss and Other Comprehensive Income/(Loss) | 38,615 | 55,618 |
| Effect on equity | (48,356) | (27,306) |
| E U R [Member] | ||
| IfrsStatementLineItems [Line Items] | ||
| Consolidated Statements of Loss and Other Comprehensive Income/(Loss) | 20,806 | 1,141 |
| Effect on equity | (679) | (5,738) |
| N O K [Member] | ||
| IfrsStatementLineItems [Line Items] | ||
| Consolidated Statements of Loss and Other Comprehensive Income/(Loss) | 716 | 1,858 |
| Effect on equity | (188) | (2,693) |
| Others [Member] | ||
| IfrsStatementLineItems [Line Items] | ||
| Consolidated Statements of Loss and Other Comprehensive Income/(Loss) | 2,221 | 320 |
| Effect on equity | kr (622) | kr (741) |