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Mineral Properties (Tables) | 12 Months Ended
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Dec. 31, 2020
Extractive Industries [Abstract] |
Mineral property |
(in thousands) |  | December 31, |
|  | 2020 |  |  | 2019 |
Exploration |  |  |  |  |  |
Lik project (Alaska – US) |  | $ | 15,611 |  |  | $ | 15,611 |
Gold Coin (Arizona – US) |  |  | 17 |  |  |  | - |
La Promesa (Peru) |  |  | - |  |  |  | 6 |
Total exploration mineral property |  | $ | 15,628 |  |  | $ | 15,617 |
Exploration expense |
|  | For the year ended December 31, |
(in thousands) |  | 2020 |  |  | 2019 |
Geologic and field expenses |  | $ | 326 |  |  | $ | 1,726 |
Administrative |  |  | 87 |  |  |  | 81 |
Total exploration expense |  | $ | 413 |  |  | $ | 1,807 |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(13)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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