Reclamation and Remediation (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2021 |
Dec. 31, 2020 |
|
| Asset Retirement Obligation, Roll Forward Analysis | ||
| Reclamation liabilities - balance at beginning of period | $ 1,890 | $ 2,003 |
| Foreign currency exchange loss (gain) | (57) | (113) |
| Reclamation liabilities - balance at end of period | 1,833 | 1,890 |
| Asset retirement obligation - balance at beginning of period | 1,208 | 1,105 |
| Changes in estimate | 82 | |
| Accretion | 109 | 79 |
| Foreign currency exchange loss (gain) | (38) | (58) |
| Asset retirement obligation - balance at end of period | 1,279 | 1,208 |
| Total period end balance | $ 3,112 | $ 3,098 |