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MINERAL PROPERTIES, PLANT AND EQUIPMENT, NET - Components of Mineral Properties, Plant and Equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Property, Plant and Equipment [Line Items]
Total mineral properties, plant, and equipment	$ 5,233,208	$ 5,194,170
Accumulated depreciation, plant and equipment	(778,122)	(714,579)
Accumulated depletion, mineral properties	(657,415)	(606,705)
Mineral properties, plant, and equipment, net	3,797,671	3,872,886
Finance lease, right-of-use asset, before accumulated amortization	81,000	84,700
Plant and equipment
Property, Plant and Equipment [Line Items]
Total mineral properties, plant, and equipment	1,870,780	1,889,634
Construction in process
Property, Plant and Equipment [Line Items]
Total mineral properties, plant, and equipment	118,836	86,304
Mineral properties subject to depletion
Property, Plant and Equipment [Line Items]
Total mineral properties, plant, and equipment	2,105,666	2,085,678
Mineral properties not yet subject to depletion
Property, Plant and Equipment [Line Items]
Total mineral properties, plant, and equipment	884,085	878,712
Exploration and evaluation assets
Property, Plant and Equipment [Line Items]
Total mineral properties, plant, and equipment	$ 253,841	$ 253,842

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- Definition

Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization Including Mineral Properties, Accumulated Depletion

+ References

No definition available.

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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
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Subparagraph (a)
-SubTopic 20
-Topic 842
-Publisher FASB
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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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- 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
-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
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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
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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.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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