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LEASE LIABILITIES (Tables)

12 Months Ended

Dec. 31, 2020

LEASE LIABILITIES

Schedule of lease liabilities

​

​	​	​	​	​	​	​
​	​	Total discounted lease liabilities
​	​	December 31, 2020		​	December 31, 2019
Finance leases	​	$	4,735	​	$	6,229
Operating lease	​	​	761	​	​	904
Lease liabilities	​	$	5,496	​	$	7,133
Current portion	​	​	(2,440)	​	​	(2,115)
Long-term portion	​	$	3,056	​	$	5,018

Schedule of lease costs

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​	​	​	​	​	​	​
​	​	December 31, 2020		​	December 31, 2019
Finance leases:	​	​	​	​	​	​
Amortization of ROU assets	​	$	878	​	$	1,123
Interest expense	​	​	392	​	​	517
Total	​	$	1,270	​	$	1,640
​	​	​	​	​	​	​
Operating lease:	​	​	​	​	​	​
Rent expense	​	$	194	​	$	193

Schedule of undiscounted lease payment obligations, finance lease

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Payments due by period

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2021

2022

2023

2024

2025

Total

Operating lease obligation

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$

228

​

$

230

​

$

234

​

$

156

​

$

—

​

$

848

Finance lease obligations

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2,467

​

2,186

​

274

​

24

​

—

​

4,951

Total future minimum lease payments

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$

2,695

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$

2,416

​

$

508

​

$

180

​

$

—

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$

5,799

Less: Imputed interest

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(303)

Total

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5,496

X

- Definition

Tabular disclosure of lease liabilities.

+ References

No definition available.

+ Details

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Namespace Prefix:	mux_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of undiscounted cash flows of finance lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to finance lease liability recognized in statement of financial position.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918701-209980

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Namespace Prefix:	us-gaap_
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- Definition

Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=121609121&loc=SL77918686-209980

+ Details

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- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration