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v3.19.1

Investments in Associate (Narrative) (Details) $ in Thousands |  |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Sep. 17, 2018 CAD ($) $ / shares item | Sep. 17, 2018 USD ($) $ / shares item | May 18, 2018 shares | Feb. 07, 2017 item | Oct. 31, 2018 CAD ($) $ / shares item | Oct. 31, 2018 USD ($) $ / shares item | May 31, 2017 USD ($) item CAD ($) | Jun. 30, 2016 item | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | May 31, 2017 $ / shares
Medgold |  |  |  |  |  |  |  |  |  |  |
Disclosure of associates [line items] |  |  |  |  |  |  |  |  |  |  |
Name of associate |  |  |  |  |  |  |  |  | Medgold Resources, Corp |  |
Number of warrants acquired by entity |  |  |  |  |  |  |  | 10,000,000 |  |  |
Number of shares acquired by entity |  |  |  |  |  |  |  | 10,000,000 |  |  |
Number of common share purchased in associate |  |  |  | 10,000,000 |  |  |  |  |  |  |
Proportion of ownership interest in associate |  |  |  | 24.00% | 22.20% | 22.20% |  |  | 22.00% | 22.00% |
Number of units acquired by entity |  |  |  |  | 1,079,700 | 1,079,700 |  |  |  |  |
Purchased per unit price paid by entity | $ / shares |  |  |  |  | 0.30 | 0.30 |  |  |  |  |
Available for sale interest in investment |  |  |  |  | $ 324,000 | $ 249 |  |  |  |  |
Strike price per warrant | $ / shares |  |  |  |  | $ 0.40 |  |  |  |  |  |
Market value of investment | $ |  |  |  |  |  |  |  |  | $ 2,740 | $ 3,200 |
Prospero |  |  |  |  |  |  |  |  |  |  |
Disclosure of associates [line items] |  |  |  |  |  |  |  |  |  |  |
Name of associate |  |  |  |  |  |  |  |  | Prospero Silver Corporation |  |
Number of shares acquired by entity | 4,746,667 | 4,746,667 |  |  |  |  |  |  |  |  |
Proportion of ownership interest in associate |  |  |  |  |  |  | 15.00% |  | 27.00% | 15.00% |
Number of units acquired by entity |  |  |  |  |  |  | 5,357,142 |  |  |  |
Purchased per unit price paid by entity | $ |  |  |  |  |  |  | 0.28 |  |  |  |
Purchased per share price paid by entity | $ / shares | 0.0750 | 0.0750 |  |  |  |  |  |  |  |  |
Available for sale interest in investment | $ 356,000 | $ 274 |  |  |  |  | $ 1,500 |  |  |  |
Strike price per warrant | $ / shares |  |  |  |  |  |  |  |  |  |  | $ 0.35
Proportion of ownership interest if all warrants exercised |  |  |  |  |  |  | 25.90% |  |  |  |
Number of common shares purchase upon exercise of share purchase warrants | shares |  |  | 5,357,142 |  |  |  |  |  |  |  |
Proportion of ownership interest upon warrants exercised |  |  | 20.30% |  |  |  |  |  |  |  |
Market value of investment | $ |  |  |  |  |  |  |  |  | $ 927 | $ 696 |

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