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MARKETABLE SECURITIES (Details) - USD ($) $ in Thousands	2 Months Ended	12 Months Ended
	Feb. 23, 2018	Dec. 31, 2017	Dec. 31, 2016
Disclosure Of Detailed Information About Marketable Securities [Abstract]
Balance, beginning of year	$ 114,001	$ 148,944	$ 88,184
Additions		5,295	7,329
Additions from the acquisition of Seabee Gold Operation (note 3)		0	351
Disposals	$ (24,983)	(72,132)	(5,327)
Fair value adjustments		$ 31,894	$ 58,407

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The amount of current financial assets. [Refer: Financial assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2017-01-01
-Paragraph 25
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=7&date=2017-03-01&anchor=para_25&doctype=Standard
-URIDate 2017-03-09

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Disclosure Of Detailed Information About Marketable Securities [Abstract]

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