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REVENUE - Revenue by Metal (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Disaggregation of Revenue [Line Items]      
Revenue $ 1,148,033 $ 1,474,199 $ 853,089
Gold       
Disaggregation of Revenue [Line Items]      
Revenue 946,013 1,240,844 750,458
Silver       
Disaggregation of Revenue [Line Items]      
Revenue 153,280 183,378 92,260
Lead       
Disaggregation of Revenue [Line Items]      
Revenue 37,519 33,070 8,815
Zinc       
Disaggregation of Revenue [Line Items]      
Revenue 11,060 13,511 4,275
Other      
Disaggregation of Revenue [Line Items]      
Revenue $ 161 $ 3,396 $ (2,719)