The ownership percentage of one individual in a related party.

No definition available.

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- Definition

Expenses or income recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

No definition available.

+ Details

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- Definition

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due within one year (or the operating cycle, if longer), including liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received, taxes, interest, rent and utilities, accrued salaries and bonuses, payroll taxes and fringe benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19,20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

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

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

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- Details

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- Details

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- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=mux_RevLawMember
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- Details

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RELATED PARTY TRANSACTIONS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Apr. 26, 2017	Dec. 31, 2016
RELATED PARTY TRANSACTIONS
Accounts payable	$ 18,388		$ 18,388			$ 20,044
Entity Affiliated With Related Party \| Lexam L.P.
RELATED PARTY TRANSACTIONS
Expense (income)	27	$ 51	90	$ 71
Ownership percentage of individual					27.00%
Entity Affiliated With Related Party \| Lexam VG Gold
RELATED PARTY TRANSACTIONS
Expense (income)		18	(33)	41
Accounts payable						27
Entity Affiliated With Related Party \| REVlaw
RELATED PARTY TRANSACTIONS
Expense (income)	33	$ 27	83	$ 50
Accounts payable	$ 55		$ 55			$ 148
Lexam
RELATED PARTY TRANSACTIONS
Accounts payable					$ 288
Interest acquired (as a percent)					100.00%