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MINERAL PROPERTY INTERESTS AND PLANT AND EQUIPMENT- Mineral Properties (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Mineral Property Interests
Mineral property interests	$ 280,118	$ 311,220
Black Fox Complex
Mineral Property Interests
Mineral property interests	17,580	14,627
Lexam VG Gold
Mineral Property Interests
Mineral property interests	41,595	41,595
Los Azules Copper Project
Mineral Property Interests
Mineral property interests	191,490	191,490
Tonkin Properties
Mineral Property Interests
Mineral property interests	4,833	4,833
Gold Bar mine
Mineral Property Interests
Mineral property interests	14,675	48,492
Battle Mountain Complex
Mineral Property Interests
Mineral property interests	785	785
El Gallo Project
Mineral Property Interests
Mineral property interests	3,353	3,591
Fenix Project Properties
Mineral Property Interests
Mineral property interests	$ 5,807	$ 5,807

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Mineral Property Interests [Line Items]

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- Definition

Mineral properties, net of adjustments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 360
-Section 25
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=96866604&loc=d3e64895-109465

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

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