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v3.19.1

DISCRETIONARY BONUSES (Narrative) (Details) | 12 Months Ended
--- | ---
Dec. 31, 2018 CAD ($)
Statements Line Items |
Discretionary bonuses awarded to management and staff | $ 5,224,284

X
- Definition Represents amount of discretionary bonus. + References No definition available. + Details
Name: | emx_KeyManagementPersonnelCompensationDiscretionaryBonus
Namespace Prefix: | emx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Statement [Line Items] + References No definition available. + Details
Name: | emx_StatementsLineItems
Namespace Prefix: | emx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration