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MINERAL PROPERTIES, PLANT AND EQUIPMENT, NET (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Property, Plant and Equipment [Line Items]
Total mineral properties, plant, and equipment	$ 5,504,182	$ 4,668,819
Accumulated depreciation, plant and equipment	(687,184)	(621,323)
Accumulated depletion, mineral properties	(571,982)	(498,050)
Mineral properties, plant, and equipment, net	4,245,016	3,549,446
Finance lease, right-of-use asset, before accumulated amortization	97,700	101,700
Plant and equipment
Property, Plant and Equipment [Line Items]
Total mineral properties, plant, and equipment	1,879,461	1,793,914
Construction in process
Property, Plant and Equipment [Line Items]
Total mineral properties, plant, and equipment	83,407	58,704
Mineral properties subject to depletion
Property, Plant and Equipment [Line Items]
Total mineral properties, plant, and equipment	1,472,242	1,452,850
Mineral properties not yet subject to depletion
Property, Plant and Equipment [Line Items]
Total mineral properties, plant, and equipment	1,548,188	848,281
Exploration and evaluation assets
Property, Plant and Equipment [Line Items]
Total mineral properties, plant, and equipment	$ 520,884	$ 515,070

X

- Definition

Amount, before accumulated amortization, of right-of-use asset from finance lease.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (a)
-SubTopic 20
-Topic 842
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479041/842-20-45-1

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The accumulated decrease in the carrying value of the mineral properties as a result of mine or mineral production.

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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
-Topic 360
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482099/360-10-50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 4
-Subparagraph (a)
-SubTopic 20
-Topic 842
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479041/842-20-45-4

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)
-SubTopic 20
-Topic 842
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-4

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Amount, after accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 360
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482099/360-10-50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Name Accounting Standards Codification
-Section 50
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-Topic 842
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-4

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Amount, before accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 360
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482099/360-10-50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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-Topic 842
-Publisher FASB
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