INCOME TAXES (Narrative) (Details) - CAD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016
Unused tax losses [Member]
Statement [Line Items]
Unused tax losses for which no deferred tax asset recognised	$ 16.0	$ 13.1
Canadian exploration and development expenditures [Member]
Statement [Line Items]
Deferred tax assets	32.9	30.5
Cumulative eligible capital and undepreciated capital cost [Member]
Statement [Line Items]
Deferred tax assets	$ 1.3	$ 1.3

The amounts of income taxes recoverable in future periods in respect of: (a) deductible temporary differences; (b) the carryforward of unused tax losses; and (c) the carryforward of unused tax credits. [Refer: Temporary differences [member]; Unused tax credits [member]; Unused tax losses [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2017-01-01
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-Subparagraph g
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-URIDate 2017-03-09

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 54
-Subparagraph o
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_o&doctype=Standard
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
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-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_56&doctype=Standard
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