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SUPPLEMENTAL CASH FLOW INFORMATION - Operating Assets and Liabilities (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Decrease (increase) in operating assets: |  |  |
Trade and other receivables | $ (42,166) | $ (11,704) | $ (38,138)
Inventories | (33,341) | (108,183) | (20,848)
Other operating assets | (19,528) | (6,121) | (1,516)
Increase (decrease) in operating liabilities: |  |  |
Accounts payable | (41,873) | 40,815 | (6,882)
Accrued liabilities and other | 4,034 | (48,614) | 38,761
Reclamation liabilities | (1,466) | (1,221) | (243)
Other operating liabilities | 193 | (12,242) | (429)
Net change in operating assets and liabilities | $ (134,147) | $ (147,270) | $ (29,295)

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