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INVESTMENTS (Tables) | 12 Months Ended
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Dec. 31, 2017
Financial Instruments [Abstract] |
Summary of investments | The loss (gain) from the investment in Inter Pipeline was comprised as follows:
|  | 2017 |  |  | 2016 |  |  | 2015 |
Fair value loss from Inter Pipeline |  | $ | 23 |  |  | $ | — |  |  | $ | — |
Dividend income from Inter Pipeline |  | (10 | ) |  | (1 | ) |  | — |
|  | $ | 13 |  |  | $ | (1 | ) |  | $ | — |
The (gain) loss from the investment in PrairieSky was comprised as follows:
|  | 2017 |  |  | 2016 |  |  | 2015 |
Fair value (gain) loss from PrairieSky |  | $ | (3 | ) |  | $ | (292 | ) |  | $ | 11 |
Dividend income from PrairieSky |  | (17 | ) |  | (27 | ) |  | (5 | )
|  | $ | (20 | ) |  | $ | (319 | ) |  | $ | 6 |
As at December 31, 2017 and 2016, the Company had the following investments:
|  | 2017 |  |  | 2016 |
Investment in PrairieSky Royalty Ltd. |  | $ | 726 |  |  | $ | 723 |
Investment in Inter Pipeline Ltd. |  | 167 |  |  | 190 |
|  | $ | 893 |  |  | $ | 913 |

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