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v3.20.1

Mineral Properties and Exploration and Evaluation Assets (Schedule Related to Property, Plant and Equipment) (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Cost |  |
Balance at December 31 | $ 192,200,000 |
Write-downs |  | $ 0
Balance at December 31 | 378,509,000 | 192,200,000
Accumulated Impairment |  |
Balance at December 31 | 192,200,000 |
Balance at December 31 | 378,509,000 | 192,200,000
Accumulated Depreciation |  |
Balance at December 31 | 192,200,000 |
Balance at December 31 | 378,509,000 | 192,200,000
NET BOOK VALUE at December 31, | 378,509,000 | 192,200,000
Gross carrying amount [member] |  |
Cost |  |
Balance at December 31 | 306,403,000 | 221,649,000
Additions | 207,042,000 | 79,131,000
Changes in closure and reclamation provision | 171,000 | 550,000
Disposals | (1,125,000) | (2,243,000)
Balance at December 31 | 512,491,000 | 306,403,000
Accumulated Impairment |  |
Balance at December 31 | 306,403,000 | 221,649,000
Balance at December 31 | 512,491,000 | 306,403,000
Accumulated Depreciation |  |
Balance at December 31 | 306,403,000 | 221,649,000
Balance at December 31 | 512,491,000 | 306,403,000
NET BOOK VALUE at December 31, | 512,491,000 | 306,403,000
Accumulated depreciation and amortisation [member] |  |
Cost |  |
Balance at December 31 | 106,887,000 | 87,985,000
Disposals | (825,000) | (2,040,000)
Balance at December 31 | 133,982,000 | 106,887,000
Accumulated Impairment |  |
Balance at December 31 | 106,887,000 | 87,985,000
Balance at December 31 | 133,982,000 | 106,887,000
Accumulated Depreciation |  |
Balance at December 31 | 106,887,000 | 87,985,000
Balance at December 31 | 133,982,000 | 106,887,000
NET BOOK VALUE at December 31, | 133,982,000 | 106,887,000
Mineral Properties and Exploration and Evaluation Assets [member] |  |
Cost |  |
Balance at December 31 | 312,800,000 |
Write-downs | (2,516,000) |
Balance at December 31 | 353,519,000 | 312,800,000
Accumulated Impairment |  |
Balance at December 31 | 312,800,000 |
Balance at December 31 | 353,519,000 | 312,800,000
Accumulated Depreciation |  |
Balance at December 31 | 312,800,000 |
Balance at December 31 | 353,519,000 | 312,800,000
NET BOOK VALUE at December 31, | 353,519,000 | 312,800,000
Mineral Properties and Exploration and Evaluation Assets [member] | Gross carrying amount [member] |  |
Cost |  |
Balance at December 31 | 460,885,000 | 421,171,000
Additions | 51,371,000 | 38,704,000
Changes in closure and reclamation provision | 14,636,000 | 1,010,000
Balance at December 31 | 524,376,000 | 460,885,000
Accumulated Impairment |  |
Balance at December 31 | 460,885,000 | 421,171,000
Balance at December 31 | 524,376,000 | 460,885,000
Accumulated Depreciation |  |
Balance at December 31 | 460,885,000 | 421,171,000
Balance at December 31 | 524,376,000 | 460,885,000
NET BOOK VALUE at December 31, | 524,376,000 | 460,885,000
Mineral Properties and Exploration and Evaluation Assets [member] | Accumulated depreciation and amortisation [member] |  |
Cost |  |
Balance at December 31 | 148,085,000 | 124,559,000
Balance at December 31 | 170,857,000 | 148,085,000
Accumulated Impairment |  |
Balance at December 31 | 148,085,000 | 124,559,000
Balance at December 31 | 170,857,000 | 148,085,000
Accumulated Depreciation |  |
Balance at December 31 | 148,085,000 | 124,559,000
Depletion | 22,772,000 | 23,526,000
Balance at December 31 | 170,857,000 | 148,085,000
NET BOOK VALUE at December 31, | 170,857,000 | 148,085,000
Mineral Properties [member] |  |
Cost |  |
Balance at December 31 | 7,797,000 | 4,150,000
Additions | 2,652,000 | 3,647,000
Write-downs | (2,516,000) |
Balance at December 31 | 7,933,000 | 7,797,000
Accumulated Impairment |  |
Balance at December 31 | 7,797,000 | 4,150,000
Balance at December 31 | 7,933,000 | 7,797,000
Accumulated Depreciation |  |
Balance at December 31 | 7,797,000 | 4,150,000
Balance at December 31 | 7,933,000 | 7,797,000
NET BOOK VALUE at December 31, | 7,933,000 | 7,797,000
Caylloma Plant and Mine Equipment [member] | Depletable [member] |  |
Cost |  |
Balance at December 31 | 53,418,000 |
Balance at December 31 | 53,809,000 | 53,418,000
Accumulated Impairment |  |
Balance at December 31 | 53,418,000 |
Balance at December 31 | 53,809,000 | 53,418,000
Accumulated Depreciation |  |
Balance at December 31 | 53,418,000 |
Balance at December 31 | 53,809,000 | 53,418,000
NET BOOK VALUE at December 31, | 53,809,000 | 53,418,000
Caylloma Plant and Mine Equipment [member] | Depletable [member] | Gross carrying amount [member] |  |
Cost |  |
Balance at December 31 | 121,625,000 | 112,669,000
Additions | 6,396,000 | 8,240,000
Changes in closure and reclamation provision | 223,000 | 716,000
Balance at December 31 | 128,244,000 | 121,625,000
Accumulated Impairment |  |
Balance at December 31 | 121,625,000 | 112,669,000
Balance at December 31 | 128,244,000 | 121,625,000
Accumulated Depreciation |  |
Balance at December 31 | 121,625,000 | 112,669,000
Balance at December 31 | 128,244,000 | 121,625,000
NET BOOK VALUE at December 31, | 128,244,000 | 121,625,000
Caylloma Plant and Mine Equipment [member] | Depletable [member] | Accumulated depreciation and amortisation [member] |  |
Cost |  |
Balance at December 31 | 68,207,000 | 61,053,000
Balance at December 31 | 74,435,000 | 68,207,000
Accumulated Impairment |  |
Balance at December 31 | 68,207,000 | 61,053,000
Balance at December 31 | 74,435,000 | 68,207,000
Accumulated Depreciation |  |
Balance at December 31 | 68,207,000 | 61,053,000
Depletion | 6,228,000 | 7,154,000
Balance at December 31 | 74,435,000 | 68,207,000
NET BOOK VALUE at December 31, | 74,435,000 | 68,207,000
San Jose Property Plant and Mine Equipment [member] | Depletable [member] |  |
Cost |  |
Balance at December 31 | 95,731,000 |
Balance at December 31 | 87,911,000 | 95,731,000
Accumulated Impairment |  |
Balance at December 31 | 95,731,000 |
Balance at December 31 | 87,911,000 | 95,731,000
Accumulated Depreciation |  |
Balance at December 31 | 95,731,000 |
Balance at December 31 | 87,911,000 | 95,731,000
NET BOOK VALUE at December 31, | 87,911,000 | 95,731,000
San Jose Property Plant and Mine Equipment [member] | Depletable [member] | Gross carrying amount [member] |  |
Cost |  |
Balance at December 31 | 175,609,000 | 164,198,000
Additions | 7,838,000 | 12,035,000
Changes in closure and reclamation provision | 886,000 | (624,000)
Balance at December 31 | 184,333,000 | 175,609,000
Accumulated Impairment |  |
Balance at December 31 | 175,609,000 | 164,198,000
Balance at December 31 | 184,333,000 | 175,609,000
Accumulated Depreciation |  |
Balance at December 31 | 175,609,000 | 164,198,000
Balance at December 31 | 184,333,000 | 175,609,000
NET BOOK VALUE at December 31, | 184,333,000 | 175,609,000
San Jose Property Plant and Mine Equipment [member] | Depletable [member] | Accumulated depreciation and amortisation [member] |  |
Cost |  |
Balance at December 31 | 79,878,000 | 63,506,000
Balance at December 31 | 96,422,000 | 79,878,000
Accumulated Impairment |  |
Balance at December 31 | 79,878,000 | 63,506,000
Balance at December 31 | 96,422,000 | 79,878,000
Accumulated Depreciation |  |
Balance at December 31 | 79,878,000 | 63,506,000
Depletion | 16,544,000 | 16,372,000
Balance at December 31 | 96,422,000 | 79,878,000
NET BOOK VALUE at December 31, | 96,422,000 | 79,878,000
Lindero Project [member] | Non Depletable [member] |  |
Cost |  |
Balance at December 31 | 155,854,000 |
Balance at December 31 | 203,866,000 | 155,854,000
Accumulated Impairment |  |
Balance at December 31 | 155,854,000 |
Balance at December 31 | 203,866,000 | 155,854,000
Accumulated Depreciation |  |
Balance at December 31 | 155,854,000 |
Balance at December 31 | 203,866,000 | 155,854,000
NET BOOK VALUE at December 31, | 203,866,000 | 155,854,000
Lindero Project [member] | Non Depletable [member] | Gross carrying amount [member] |  |
Cost |  |
Balance at December 31 | 155,854,000 | 140,154,000
Additions | 34,485,000 | 14,782,000
Changes in closure and reclamation provision | 13,527,000 | 918,000
Balance at December 31 | 203,866,000 | 155,854,000
Accumulated Impairment |  |
Balance at December 31 | 155,854,000 | 140,154,000
Balance at December 31 | 203,866,000 | 155,854,000
Accumulated Depreciation |  |
Balance at December 31 | 155,854,000 | 140,154,000
Balance at December 31 | 203,866,000 | 155,854,000
NET BOOK VALUE at December 31, | 203,866,000 | 155,854,000
Other Mineral Properties and Exploration and Evaluation Assets [member] |  |
Cost |  |
Balance at December 31 | 73,000 |
Additions | 152,000 | 73,000
Balance at December 31 | 225,000 | 73,000
Accumulated Impairment |  |
Balance at December 31 | 73,000 |
Balance at December 31 | 225,000 | 73,000
Accumulated Depreciation |  |
Balance at December 31 | 73,000 |
Balance at December 31 | 225,000 | 73,000
NET BOOK VALUE at December 31, | 225,000 | 73,000
Other Mineral Properties and Exploration and Evaluation Assets [member] | Non Depletable [member] |  |
Cost |  |
Balance at December 31 | 7,797,000 |
Write-downs | (2,516,000) |
Balance at December 31 | 7,933,000 | 7,797,000
Accumulated Impairment |  |
Balance at December 31 | 7,797,000 |
Balance at December 31 | 7,933,000 | 7,797,000
Accumulated Depreciation |  |
Balance at December 31 | 7,797,000 |
Balance at December 31 | 7,933,000 | 7,797,000
NET BOOK VALUE at December 31, | 7,933,000 | 7,797,000
Other Mineral Properties and Exploration and Evaluation Assets [member] | Non Depletable [member] | Gross carrying amount [member] |  |
Cost |  |
Balance at December 31 | 7,797,000 | 4,150,000
Additions | 2,652,000 | 3,647,000
Balance at December 31 | 7,933,000 | 7,797,000
Accumulated Impairment |  |
Balance at December 31 | 7,797,000 | 4,150,000
Balance at December 31 | 7,933,000 | 7,797,000
Accumulated Depreciation |  |
Balance at December 31 | 7,797,000 | 4,150,000
Balance at December 31 | 7,933,000 | 7,797,000
NET BOOK VALUE at December 31, | 7,933,000 | 7,797,000
Tlacolula E&EA | MEXICO |  |
Cost |  |
Balance at December 31 | 3,298,000 | 3,128,000
Additions | 218,000 | 170,000
Balance at December 31 | 3,516,000 | 3,298,000
Accumulated Impairment |  |
Balance at December 31 | 3,298,000 | 3,128,000
Balance at December 31 | 3,516,000 | 3,298,000
Accumulated Depreciation |  |
Balance at December 31 | 3,298,000 | 3,128,000
Balance at December 31 | 3,516,000 | 3,298,000
NET BOOK VALUE at December 31, | 3,516,000 | 3,298,000
Pachuca E&EA | MEXICO |  |
Cost |  |
Additions | 962,000 |
Write-downs | (962,000) |
Arizaro E&EA | ARGENTINA |  |
Cost |  |
Balance at December 31 | 934,000 | 367,000
Additions | 2,000 | 567,000
Balance at December 31 | 936,000 | 934,000
Accumulated Impairment |  |
Balance at December 31 | 934,000 | 367,000
Balance at December 31 | 936,000 | 934,000
Accumulated Depreciation |  |
Balance at December 31 | 934,000 | 367,000
Balance at December 31 | 936,000 | 934,000
NET BOOK VALUE at December 31, | 936,000 | 934,000
Esperanza E&EA | ARGENTINA |  |
Cost |  |
Balance at December 31 | 788,000 | 82,000
Additions |  | 706,000
Write-downs | (788,000) |
Balance at December 31 |  | 788,000
Accumulated Impairment |  |
Balance at December 31 | 788,000 | 82,000
Balance at December 31 |  | 788,000
Accumulated Depreciation |  |
Balance at December 31 | 788,000 | 82,000
Balance at December 31 |  | 788,000
NET BOOK VALUE at December 31, | 788,000 | 788,000
Incachule E&EA | ARGENTINA |  |
Cost |  |
Balance at December 31 | 766,000 | 82,000
Additions |  | 684,000
Write-downs | (766,000) |
Balance at December 31 |  | 766,000
Accumulated Impairment |  |
Balance at December 31 | 766,000 | 82,000
Balance at December 31 |  | 766,000
Accumulated Depreciation |  |
Balance at December 31 | 766,000 | 82,000
Balance at December 31 |  | 766,000
NET BOOK VALUE at December 31, | 766,000 | 766,000
Barje E&EA [Member] | SERBIA |  |
Cost |  |
Balance at December 31 | 1,938,000 | 491,000
Additions | 1,318,000 | 1,447,000
Balance at December 31 | 3,256,000 | 1,938,000
Accumulated Impairment |  |
Balance at December 31 | 1,938,000 | 491,000
Balance at December 31 | 3,256,000 | 1,938,000
Accumulated Depreciation |  |
Balance at December 31 | 1,938,000 | 491,000
Balance at December 31 | 3,256,000 | 1,938,000
NET BOOK VALUE at December 31, | 3,256,000 | $ 1,938,000
Two Greenfield Projects [member] |  |
Cost |  |
Write-downs | $ (1,554,000) |

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