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GOODWILL (Narrative) (Details) - CAD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Statements Line Items
Writedown of goodwill	$ (1,879,356)	$ (2,709,239)	$ (1,518,328)

X

- Definition

Statement [Line Items]

+ References

No definition available.

+ Details

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Namespace Prefix:	emx_
Data Type:	xbrli:stringItemType
Balance Type:	na
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X

- Definition

The amount of impairment loss recognised in profit or loss for goodwill. [Refer: Impairment loss recognised in profit or loss; Goodwill]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2018-01-01
-Paragraph B67
-Subparagraph d
-Clause v
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=3&date=2018-03-01&anchor=para_B67_d_v&doctype=Appendix&seq=2
-URIDate 2018-03-16

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