Basis of preparation, material accounting policies, and future accounting charges - Schedule of key assumptions used (Details) |
12 Months Ended |
|---|---|
Dec. 31, 2025 | |
| Basis of preparation, significant accounting policies, and future accounting changes [Abstract] | |
| Discount rate | 6.98% |
| Range of vanadium forecasted prices | $5.19/lb - 8.00/lb |
| Cost of mine and production, respectively | $2.11/t and $5.07/lb , respectively |
| Sensitivity of key assumptions | Discount rate - increase to 25.50% or; The average vanadium forecasted prices would have to change from $7.72/lb to $6.18/lb or; Costs of mine would have to increase from $2.11/t to $3.71/t and cost of production would have to increase from $5.07/lb to $6.59/lb. Result in an estimated recoverable amount equal to the carrying value. |