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SUPPLEMENTAL DISCLOSURE WITH RESPECT TO CASH FLOWS (Tables) | 12 Months Ended
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Dec. 31, 2019
Disclosure Of Cash Flow Statement Explanatory [Abstract] |
Disclosure of detailed information about cash and cash equivalents [Table Text Block] |
|  | December 31, 2019 |  |  | December 31, 2018 |
Cash | $ | 68,994 |  | $ | 86,175 |
Short-term deposits |  | 187 |  |  | 196 |
Total | $ | 69,181 |  | $ | 86,371 |
Disclosure of detailed information about changes in non-cash working capital [Table Text Block] |
|  | Year ended |  |  | Year ended |
|  | December 31, 2019 |  |  | December 31, 2018 |
Accounts receivable | $ | 1,139 |  | $ | 1,280 |
Prepaid expenses |  | (277 | ) |  | 13 |
Accounts payable and accrued liabilities |  | (4,403 | ) |  | 4,981 |
Advances from joint venture partners |  | 460 |  |  | (193 | )
| $ | (3,081 | ) | $ | 6,081 |

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