Leases - Tolling agreement liability (Details) |
12 Months Ended | |||
|---|---|---|---|---|
|
Aug. 30, 2019
item
|
Dec. 31, 2025
USD ($)
|
Dec. 31, 2024
USD ($)
|
Dec. 31, 2023
USD ($)
|
|
| Disclosure of quantitative information about right-of-use assets [line items] | ||||
| Lease liabilities | $ 69,683,000 | $ 69,452,000 | $ 66,250,000 | |
| Lease modification | $ 12,161,000 | |||
| Incremental borrowing rate | 9.375% | |||
| Variable payment | $ 42,170,000 | 59,571,000 | ||
| Percentage Reduction of Future Variable Lease Payments. | 33.00% | |||
| Tolling Agreement | ||||
| Disclosure of quantitative information about right-of-use assets [line items] | ||||
| Lease liabilities | $ 27,974,000 | $ 35,471,000 | ||
| Ferroatlantica, S.A.U. | ||||
| Disclosure of quantitative information about right-of-use assets [line items] | ||||
| Percentage Of Interest Of Subsidiary Sold | 100.00% | |||
| Number of Hydroelectric Power Plants Transferred | item | 10 | |||