Represents percentages of annual interest payments.

No definition available.

Name:	emx_AnnualInterestPaymentsPercentage
Namespace Prefix:	emx_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Equity investment.

+ References

No definition available.

+ Details

Name:	emx_CommonSharesValueReceived
Namespace Prefix:	emx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

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.

+ References

No definition available.

+ Details

Name:	emx_DisclosureOfInvestmentsLineItems
Namespace Prefix:	emx_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of investment shares purchased

+ References

No definition available.

+ Details

Name:	emx_NumberOfInvestmentSharesPurchased
Namespace Prefix:	emx_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents percentage of distributing taxable income.

+ References

No definition available.

+ Details

Name:	emx_PercentageOfDistributionTaxableIncome
Namespace Prefix:	emx_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents percentages of preference shares value received.

+ References

No definition available.

+ Details

Name:	emx_PercentageOfPreferenceSharesReceived
Namespace Prefix:	emx_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents amount related to preference shares value received.

+ References

No definition available.

+ Details

Name:	emx_PreferenceSharesValueReceived
Namespace Prefix:	emx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Represents amount related to principal redeemed value of preferred shares.

+ References

No definition available.

+ Details

Name:	emx_PrincipalRedeemedValueOfPreferredShares
Namespace Prefix:	emx_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Strategic investments

+ References

No definition available.

+ Details

Name:	emx_StrategicInvestments
Namespace Prefix:	emx_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of investment income, such as interest and dividends.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 26
-IssueDate 2019-01-01
-Paragraph 35
-Subparagraph b
-Clause iii
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=26&code=ifrs-tx-2019-en-r&anchor=para_35_b_iii&doctype=Standard
-URIDate 2019-03-27

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 85
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_85&doctype=Standard
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_InvestmentIncome
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The percentage of voting equity interests acquired in a business combination. [Refer: Business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2019-01-01
-Paragraph B64
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2019-en-r&anchor=para_B64_c&doctype=Appendix&subtype=B
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_PercentageOfVotingEquityInterestsAcquired
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The cash outflow for the purchase of investments other than investments accounted for using equity method. [Refer: Investments accounted for using equity method; Investments other than investments accounted for using equity method]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2019-01-01
-Paragraph 16
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2019-en-r&anchor=para_16&doctype=Standard
-URIDate 2019-03-27

+ Details

Name:	ifrs-full_PurchaseOfInvestmentsOtherThanInvestmentsAccountedForUsingEquityMethod
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	ifrs-full_TypesOfInvestmentPropertyAxis=emx_EnseroHoldingsIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_TypesOfInvestmentPropertyAxis=emx_RawhideAcquisitionHoldingLlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

INVESTMENTS (Narrative) (Details) $ in Thousands, $ in Thousands	1 Months Ended		12 Months Ended
	Dec. 19, 2019 CAD ($)	Dec. 19, 2019 USD ($)	Dec. 31, 2020 CAD ($) shares	Dec. 31, 2020 USD ($) shares	Dec. 31, 2019 CAD ($)	Dec. 31, 2020 USD ($)
Disclosure Of Investments [Line Items]
Strategic investments			$ 8,871		$ 4,613
Payments for investments			0		$ 4,580
Ensero Holdings, Inc. [Member]
Disclosure Of Investments [Line Items]
Strategic investments			5,023			$ 3,790
Preference shares received			$ 4,797	$ 3,620
Percentage of preference shares received			65.00%	65.00%
Annual interest payments			6.00%	6.00%
Principal redeemed value of preferred shares				$ 7,240
Common shares value received			$ 226	171
Percentage of equity interest acquired			7.50%			7.50%
interest income on investment			$ 526
Rawhide Acquistion Holding, LLC [Member]
Disclosure Of Investments [Line Items]
Percentage of equity interest acquired	19.90%	19.90%
Payments for investments	$ 4,581	$ 3,519		$ 1,250
Percentage of distribution taxable income	50.00%	50.00%
Class A common shares purchased \| shares			201,613	201,613