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LEASES - Balance Sheet (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
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Leases [Abstract] |  |
Finance lease right-of-use assets, net (included in Mineral properties, plant and equipment, net) | $ 84,689 | $ 101,705
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Mineral properties, plant and equipment, net | Mineral properties, plant and equipment, net
Operating lease right-of-use assets (included in Other non-current assets) | $ 21,038 | $ 17,946
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Other non-current assets | Other non-current assets
Total lease right-of-use-assets | $ 105,727 | $ 119,651
Short-term finance lease liabilities (included in Finance lease liabilities) | 4,555 | 3,872
Short-term operating lease liabilities (included in Accrued liabilities and other) | $ 1,545 | $ 1,976
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] | Accrued liabilities and other | Accrued liabilities and other
Long-term finance lease liabilities (included in Finance Lease liabilities) | $ 86,141 | $ 102,434
Long-term operating lease liabilities (included in Other non-current liabilities) | $ 21,009 | $ 16,969
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] | Other non-current liabilities | Other non-current liabilities
Total lease liabilities | $ 113,250 | $ 125,251

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- Definition Present value of lessee's discounted obligation for lease payments from finance lease, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479041/842-20-45-1 + Details
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- Definition Present value of lessee's discounted obligation for lease payments from finance lease, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479041/842-20-45-1 + Details
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- Definition Amount, after accumulated amortization, of right-of-use asset from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479041/842-20-45-1 + Details
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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479041/842-20-45-1 + Details
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