| Line Item | Jun 30, 2026 | Mar 31, 2026 | Dec 31, 2025 | Sep 30, 2025 | Jun 30, 2025 | Mar 31, 2025 | Dec 31, 2024 | Sep 30, 2024 | Jun 30, 2024 | Mar 31, 2024 | Dec 31, 2023 | Sep 30, 2023 | Jun 30, 2023 | Mar 31, 2023 | Dec 31, 2022 | Sep 30, 2022 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Collaboration revenue (note 9) | ||||||||||||||||
| YoY growth | — | -100.0% | — | — | ||||||||||||
| Operating expenses: | ||||||||||||||||
| Research and development | ||||||||||||||||
| General and administrative | ||||||||||||||||
| Total operating expenses | ||||||||||||||||
| % of revenue | — | — | — | — | ||||||||||||
| Loss from operations | ||||||||||||||||
| % of revenue | — | — | — | — | ||||||||||||
| Other income: | ||||||||||||||||
| Interest income | ||||||||||||||||
| Unrealized fair value gain on trading securities | — | — | — | — | ||||||||||||
| Foreign exchange gain (loss) | ||||||||||||||||
| Total other income | ||||||||||||||||
| Loss before income taxes | ||||||||||||||||
| Income tax recovery | ||||||||||||||||
| Net loss | ||||||||||||||||
| % of revenue | — | — | — | — | ||||||||||||
| Basic | ||||||||||||||||
| Diluted |