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RISK AND CAPITAL MANAGEMENT: FINANCIAL INSTRUMENTS (Narrative) (Details) - CAD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Disclosure of detailed information about financial instruments [line items]
Working capital	$ 75,178	$ 88,902
Strategic investments	4,613	$ 33
Rawhide LLC
Disclosure of detailed information about financial instruments [line items]
Strategic investments	$ 4,580
Market Risk [Member]
Disclosure of detailed information about financial instruments [line items]
Potential change in market prices	10.00%
Value at risk	$ 9,700
Currency Risk [Member]
Disclosure of detailed information about financial instruments [line items]
Potential change in market prices	10.00%
Value at risk	$ 6,552

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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

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- Definition

The measure of a potential loss exposure as a result of future market movements, based on a specified confidence interval and measurement horizon.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 7
-IssueDate 2018-01-01
-Paragraph 41
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2018-03-01&anchor=para_41&doctype=Standard
-URIDate 2018-03-16

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