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CONTINGENCIES AND CAPITAL COMMITMENTS (Narrative) (Details)
S/ in Millions
 1 Months Ended 12 Months Ended
Jan. 31, 2021
USD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2022
PEN (S/)
Dec. 31, 2021
USD ($)
Disclosure of other provisions [line items]        
Capital commitments   $ 14,303,000   $ 71,759,000
Capital commitment amounts expected to be expended within one year   13,900,000    
Tax expense (income)   10,797,000   47,781,000
Income taxes payable   11,591,000   20,563,000
Government of Burkina Faso [Member]        
Disclosure of other provisions [line items]        
Potential early payment termination amount   2,000,000.0    
Government of Cte d'Ivoire [Member]        
Disclosure of other provisions [line items]        
Potential early payment termination amount   19,700,000    
Civil Work [Member]        
Disclosure of other provisions [line items]        
Capital commitments   6,500,000    
Equipment Purchases [Member]        
Disclosure of other provisions [line items]        
Capital commitments   1,800,000    
Other Services [Member]        
Disclosure of other provisions [line items]        
Capital commitments   100,000    
Construction Related [Member]        
Disclosure of other provisions [line items]        
Capital commitments   14,300,000    
PERU        
Disclosure of other provisions [line items]        
Payment of disputed amount   1,100,000 S/ 4.3  
PERU | Assessed in Prior Period [Member]        
Disclosure of other provisions [line items]        
Income tax interest and penalties   600,000 2.4  
Payment of disputed amount   1,100,000 S/ 4.3  
ARGENTINA        
Disclosure of other provisions [line items]        
Income taxes payable   5,500,000   $ 6,000,000.0
Caylloma Mine [Member]        
Disclosure of other provisions [line items]        
Undiscounted closure costs   18,200,000    
Progressive closure activities $ 6,200,000      
Final closure activities   9,800,000    
Post closure activities   2,300,000    
Guarantees with government current year   10,800,000    
San Jose Mine [Member]        
Disclosure of other provisions [line items]        
Guarantees with government current year   $ 900,000