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v3.19.1

Mineral Properties and Exploration and Evaluation Assets (Narrative) (Details) $ in Thousands |  | 12 Months Ended
--- | --- | ---
Aug. 02, 2017 USD ($) EquityInstruments | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Purchase of mining assets |  | $ 36,788 | $ 37,405
Expense arising from exploration for and evaluation of mineral resources |  | 723 | 1,534
Lindero Project [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Capitalized interest |  | 1,125 | 146
Tlacolula Property [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Purchase of mining assets | $ 150 |  |
Fair value of consideration transferred to purchase asset | $ 1,328 |  |
Number of instruments or interests issued or issuable | EquityInstruments | 239,385 |  |
Equity interests of acquirer | $ 1,128 |  |
NSR royalty, percentage | 2.00% |  |
Half of NSR royalty purchase price, per agreement | $ 1,500 |  |
Expense arising from exploration for and evaluation of mineral resources |  | 170 | 1,486
Other exploration projects |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Expense arising from exploration for and evaluation of mineral resources |  | $ 3,647 | $ 2,508

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