Supplemental Information for Statements of Cash Flows - Non-cash investing activity (Details) - USD ($) $ in Thousands |
6 Months Ended | |
|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Supplemental Information for Statements of Cash Flows | ||
| Capital assets included in payables at period end | $ 1,316 | $ 1,399 |
| Capitalized interest included in payables at period end | 1,118 | |
| Additional equipment financing incurred | 1,060 | |
| Change in estimated reclamation costs on mineral properties | $ 5,361 | $ 2,710 |