| Line Item | Dec 31, 2025 | Dec 31, 2024 | Dec 31, 2023 | Dec 31, 2022 | Dec 31, 2021 | Dec 31, 2020 |
|---|---|---|---|---|---|---|
| Operating expenses (notes 11, 15, 16) | ||||||
| General and administration (note 15) | ||||||
| Research and development (note 15) | ||||||
| Loss before other income (expenses) | ||||||
| Interest income (note 6) | ||||||
| Gain (loss) on foreign exchange | ||||||
| Change in derivative liability (note 9) | ||||||
| Other income | — | |||||
| Net loss and comprehensive loss for the year |