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MINERAL PROPERTIES, PLANT AND EQUIPMENT, NET (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Property, Plant and Equipment [Line Items] |  |
Total mineral properties, plant, and equipment | $ 4,168,058 | $ 4,200,094
Accumulated depreciation, plant and equipment | (553,257) | (529,635)
Accumulated depreciation, mineral properties | (451,070) | (420,695)
Mineral properties, plant, and equipment, net | 3,163,731 | 3,249,764
Finance lease, right-of-use asset, before accumulated amortization | 105,700 | 114,900
Plant and equipment |  |
Property, Plant and Equipment [Line Items] |  |
Total mineral properties, plant, and equipment | 1,745,105 | 1,762,833
Construction in process |  |
Property, Plant and Equipment [Line Items] |  |
Total mineral properties, plant, and equipment | 51,832 | 36,841
Mineral properties subject to depletion |  |
Property, Plant and Equipment [Line Items] |  |
Total mineral properties, plant, and equipment | 1,393,722 | 1,331,615
Mineral properties not yet subject to depletion |  |
Property, Plant and Equipment [Line Items] |  |
Total mineral properties, plant, and equipment | 658,637 | 141,629
Exploration and evaluation assets |  |
Property, Plant and Equipment [Line Items] |  |
Total mineral properties, plant, and equipment | $ 318,762 | $ 927,176

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- Definition Amount, before accumulated amortization, of right-of-use asset from finance lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918627-209977 + Details
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- Definition Amount of accumulated depreciation and amortization from plant, property, and equipment and right-of-use asset from finance lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918638-209977 + Details
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