Fair Value of Financial Instruments - Summary of Financial Assets and Liabilities Measured at Estimated Fair Value on a Recurring Basis (Details) - Fair Value Measurements Recurring - CAD ($) $ in Thousands |
Mar. 31, 2026 |
Mar. 31, 2025 |
|---|---|---|
| Assets: | ||
| Short-term investments | $ 17,656 | |
| Restricted short-term investments | $ 5,046 | 6,410 |
| Other investments | 106,025 | 177,873 |
| Liabilities: | ||
| Warrant derivative liability | 27,522 | 8,647 |
| Level 1 | ||
| Assets: | ||
| Short-term investments | 17,656 | |
| Restricted short-term investments | 5,046 | 6,410 |
| Other investments | 46 | 46 |
| Level 3 | ||
| Assets: | ||
| Other investments | 105,979 | 177,827 |
| Liabilities: | ||
| Warrant derivative liability | $ 27,522 | $ 8,647 |