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MARKETABLE SECURITIES (Tables) | 12 Months Ended
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Dec. 31, 2018
Disclosure Of Detailed Information About Marketable Securities [Abstract] |
Disclosure of the movement in marketable securities |
| December 31, 2018 |  | December 31, 2017 |
| $ |  | $ |
Balance, beginning of year | 114,001 |  | 148,944 |
Additions | 22,674 |  | 5,295 |
Disposals | (63,445 | ) | (72,132 | )
Fair value adjustments | (43,688 | ) | 31,894 |
Balance, end of year | 29,542 |  | 114,001 |

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