Note 5 - Impairment charge (Details Textual) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Disclosure of impairment loss recognised or reversed for cash-generating unit [line items] | |||
| Growth rate used in current estimate of value in use | 2.00% | 2.00% | 2.00% |
| Bottom of range [member] | |||
| Disclosure of impairment loss recognised or reversed for cash-generating unit [line items] | |||
| Discount rate used in current estimate of value in use | 13.50% | 13.40% | 12.50% |
| Top of range [member] | |||
| Disclosure of impairment loss recognised or reversed for cash-generating unit [line items] | |||
| Discount rate used in current estimate of value in use | 19.40% | 18.20% | 21.40% |