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Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2020
Significant Accounting Policies [abstract] |
Disclosure of subsidiaries |
Name |  | Location |  | Ownership |  | Principal Activity
Minera Bateas S.A.C. ("Bateas") |  | Peru |  | 100% |  | Caylloma Mine
Compania Minera Cuzcatlan S.A. de C.V. ("Cuzcatlan") |  | Mexico |  | 100% |  | San Jose Mine
Mansfield Minera S.A. ("Mansfield") |  | Argentina |  | 100% |  | Lindero Mine
Schedule of useful life of property, plant and equipment |
Land and buildings |  |  |  |
Land |  | Not depreciated |  |
Mineral properties |  | Units of production |  | Declining balance
Buildings, located at the mine |  | Units of production |  | Declining balance
Buildings, others (1) |  | 6-10 years |  | Straight line
Leasehold improvements (1) |  | 4-8 years |  | Straight line
Plant and equipment |  |  |  |
Machinery and equipment (1) |  | 3-12 years |  | Straight line
Furniture and other equipment (1) |  | 2-12 years |  | Straight line
Transport units |  | 4-5 years |  | Straight line
Capital work in progress |  | Not depreciated |  |
| (1) |  | The lesser of useful life or life of mine.
Schedule of changes to the consolidated balance sheet |
Consolidated Balance Sheet |  |  |  |  |  |  |  |  |
|  |  | As reported |  |  | IAS 16 amendment |  |  | Restated
Current assets |  |  |  |  |  |  |  |  |
Inventories (note 7) |  | $ | 14,471 |  | $ | 498 |  | $ | 14,969
Non-Current assets |  |  |  |  |  |  |  |  |
Plant and equipment (note 10) |  | $ | 378,509 |  | $ | (2,853) |  | $ | 375,656
Other assets (note 12) |  | $ | 38,389 |  | $ | 2,355 |  | $ | 40,744
Schedule of changes to the cash flow |
Consolidated Statement of Cash Flow |  |  |  |  |  |  |  |  |
|  |  | As reported |  |  | IAS 16 amendment |  |  | Restated
Changes in no cash working capital: |  |  |  |  |  |  |  |  |
Inventories |  | $ | (1,036) |  | $ | (2,853) |  | $ | (3,889)
Net cash provided by operating activities |  | $ | 63,005 |  | $ | (2,853) |  | $ | 60,152
Investing Activities |  |  |  |  |  |  |  |  |
Expenditures on Lindero construction |  | $ | (189,653) |  | $ | 2,853 |  | $ | (186,800)
Cash used in investing activities |  | $ | (145,214) |  | $ | 2,853 |  | $ | (142,361)

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