Asset retirement obligation - Narrative (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2026 |
Dec. 31, 2025 |
May 14, 2026 |
May 13, 2026 |
|
| Long-Lived Assets Held-for-sale [Line Items] | |||||
| Change in estimates | $ 5,700 | $ 5,736 | $ 2,675 | ||
| Estimated undiscounted cash flows | 333,500 | 333,500 | |||
| Estimated cash flows expected to be incurred | $ 6,600 | $ 6,600 | |||
| Hycroft Mine | |||||
| Long-Lived Assets Held-for-sale [Line Items] | |||||
| Useful life | 51 years | 34 years | |||
| Inflation Rate | |||||
| Long-Lived Assets Held-for-sale [Line Items] | |||||
| Asset retirement obligation, measurement input | 3.42% | 3.42% | |||
| Risk free rate | |||||
| Long-Lived Assets Held-for-sale [Line Items] | |||||
| Asset retirement obligation, measurement input | 10.78% | 10.78% |