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Closure and Reclamation Provisions (Schedule of Closure and Rehabilitation Provisions) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Disclosure of other provisions [line items] |  |
Current portion | $ 380 | $ 3,257
Non-current provisions | 39,970 | 27,868
Provision for decommissioning, restoration and rehabilitation costs [member] |  |
Disclosure of other provisions [line items] |  |
Balance at beginning | 31,125 | 15,943
Changes in estimate | 9,098 | 14,670
Incurred and charged against the provision | (341) | (351)
Accretion | 754 | 726
Effect of foreign exchange changes | (286) | 137
Balance at ending | 40,350 | 31,125
Current portion | (380) | (3,257)
Non-current provisions | 39,970 | 27,868
Caylloma M&I Property [member] | Provision for decommissioning, restoration and rehabilitation costs [member] |  |
Disclosure of other provisions [line items] |  |
Balance at beginning | 11,324 | 10,800
Changes in estimate | 3,288 | 394
Incurred and charged against the provision | (114) | (201)
Accretion | 256 | 331
Effect of foreign exchange changes | 7 |
Balance at ending | 14,761 | 11,324
Current portion | (142) | (3,048)
Non-current provisions | 14,619 | 8,276
Increase (decrease) to other provisions | 3,179 |
San Jose M&I Property [member] | Provision for decommissioning, restoration and rehabilitation costs [member] |  |
Disclosure of other provisions [line items] |  |
Balance at beginning | 4,848 | 3,716
Changes in estimate | 1,328 | 886
Incurred and charged against the provision | (227) | (150)
Accretion | 249 | 259
Effect of foreign exchange changes | (293) | 137
Balance at ending | 5,905 | 4,848
Current portion | (238) | (209)
Non-current provisions | 5,667 | 4,639
Lindero Project [member] | Provision for decommissioning, restoration and rehabilitation costs [member] |  |
Disclosure of other provisions [line items] |  |
Balance at beginning | 14,953 | 1,427
Changes in estimate | 4,482 | 13,390
Accretion | 249 | 136
Balance at ending | 19,684 | 14,953
Non-current provisions | $ 19,684 | $ 14,953

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