Reclamation and Remediation - Narrative (Details) - USD ($) $ in Thousands |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 31, 2019 |
|---|---|---|---|
| Undiscounted reclamation liabilities | $ 1,833 | $ 1,890 | $ 2,003 |
| Asset Retirement Obligation | 1,279 | 1,208 | $ 1,105 |
| Exploration reclamation liability | 3,112 | 3,098 | |
| Don David Gold Mine | |||
| Undiscounted reclamation liabilities | $ 1,800 | 1,900 | |
| Reclamation and remediation discount rate | 8.00% | ||
| Asset Retirement Obligation | $ 1,300 | $ 1,200 | |
| Back Forty Project | |||
| Exploration reclamation liability | $ 600 |