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Closure and Reclamation Provisions (Schedule of Estimates Used in Closure and Rehabilitation Provisions) (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 USD ($)
Provision for decommissioning, restoration and rehabilitation costs [member] |
Disclosure of other provisions [line items] |
Undiscounted estimated cash flow | $ 39,709
Caylloma M&I Property [member] | Bottom of range [member] |
Disclosure of other provisions [line items] |
Anticipated settlement date | 2021
Caylloma M&I Property [member] | Top of range [member] |
Disclosure of other provisions [line items] |
Anticipated settlement date | 2032
Caylloma M&I Property [member] | Provision for decommissioning, restoration and rehabilitation costs [member] |
Disclosure of other provisions [line items] |
Undiscounted estimated cash flow | $ 14,899
Estimated life of mine (years) | 7 years
Discount rate | 2.25%
Inflation rate | 2.00%
San Jose M&I Property [member] | Bottom of range [member] |
Disclosure of other provisions [line items] |
Anticipated settlement date | 2025
San Jose M&I Property [member] | Top of range [member] |
Disclosure of other provisions [line items] |
Anticipated settlement date | 2037
San Jose M&I Property [member] | Provision for decommissioning, restoration and rehabilitation costs [member] |
Disclosure of other provisions [line items] |
Undiscounted estimated cash flow | $ 6,864
Estimated life of mine (years) | 5 years
Discount rate | 5.25%
Inflation rate | 3.52%
Lindero Project [member] | Bottom of range [member] |
Disclosure of other provisions [line items] |
Anticipated settlement date | 2029
Lindero Project [member] | Top of range [member] |
Disclosure of other provisions [line items] |
Anticipated settlement date | 2042
Lindero Project [member] | Provision for decommissioning, restoration and rehabilitation costs [member] |
Disclosure of other provisions [line items] |
Undiscounted estimated cash flow | $ 17,946
Estimated life of mine (years) | 13 years
Discount rate | 1.45%
Inflation rate | 2.06%

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