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SUPPLEMENTAL CASH FLOW INFORMATION - Operating Assets and Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Decrease (increase) in operating assets:
Trade and other receivables	$ (45,705)	$ (10,394)
Inventories	(28,019)	(32,516)
Other operating assets	(5,564)	(5,734)
Increase (decrease) in operating liabilities:
Accounts payable	1,280	21,092
Accrued liabilities	(8,423)	(44,385)
Reclamation liabilities	(380)	118
Other operating liabilities	(1,091)	3,239
Net change in operating assets and liabilities	$ (87,902)	$ (68,580)

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Increase (Decrease) in Asset Retirement Obligations, Noncurrent

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