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Marketable Securities (Tables) | 12 Months Ended
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Dec. 31, 2017
Marketable Securities [abstract] |
Schedule of Marketable Securities |
﻿ |  |  |  |  |
﻿ | December 31, |  | December 31,
﻿ |  | 2017 |  |  | 2016
﻿Common shares of Medgold Resources Corp. | $ | - |  | $ | 1,266
﻿Warrants of Medgold Resources Corp. |  | - |  |  | 313
﻿Common shares of Prospero Silver Corp. |  | 555 |  |  | -
﻿Warrants of Prospero Silver Corp. |  | 1 |  |  | -
﻿ | $ | 556 |  | $ | 1,579
﻿

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