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INCOME TAXES (Narrative) (Details) | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Statement [Line Items] |  |  |  |
Applicable tax rate |  | 27.00% | 26.00% | 26.00%
British Columbia (BC) Government - general corporate income tax rate [Member] |  |  |  |
Statement [Line Items] |  |  |  |
Applicable tax rate | 12.00% | 11.00% |  |
Combined Federal and Provincial (BC) general corporate income tax rate [Member] |  |  |  |
Statement [Line Items] |  |  |  |
Applicable tax rate | 27.00% | 26.00% |  |
United States Government - Federal corporate income tax rate [Member] |  |  |  |
Statement [Line Items] |  |  |  |
Applicable tax rate | 21.00% | 35.00% |  |

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- Definition The applicable income tax rate. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 12 -IssueDate 2017-01-01 -Paragraph 81 -Subparagraph c -Clause ii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=12&date=2017-03-01&anchor=para_81_c_ii&doctype=Standard -URIDate 2017-03-09 + Details
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