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OTHER EXPENSES - Amounts recognized in other expenses line item in consolidated statements of income (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
OTHER EXPENSES    
Loss on disposal of property, plant and mine development (Note 9) $ 26,759 $ 8,754
Interest income (7,959) (9,820)
Temporary suspension and other costs due to COVID-19   11,275
Acquisition costs (Note 5) 21,503 95,035
Environmental remediation 2,712 10,417
Other costs 23,254 25,647
Total other expenses $ 66,269 $ 141,308