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DEFERRED REVENUE - Narrative (Details)
 12 Months Ended
Dec. 31, 2023
USD ($)
oz
Dec. 31, 2022
USD ($)
oz
Dec. 31, 2019
USD ($)
Disclosure of deferred income [Line Items]      
Proceeds from gold prepayment   $ 236,000,000.0  
Sales Arrangement, Average Forward Contract Price Of Amount Deferred, per Ounce $ 1,753    
2019 Prepay Arrangement      
Disclosure of deferred income [Line Items]      
Floor price (in dollars per ounce)   1,300  
Cap price (in dollars per ounce)   1,500  
Proceeds from gold prepayment   $ 30,000,000 $ 169,800,000
Sales arrangement, monthly amount of product provided | oz   12,500  
Sales arrangement, total amount of product provided | oz   150,000  
Purchase arrangement, weighted average cost, percentage per annum   0.0538  
2022 Prepay Arrangements      
Disclosure of deferred income [Line Items]      
Floor price (in dollars per ounce) 1,700    
Cap price (in dollars per ounce) $ 2,100    
Proceeds from gold prepayment   $ 236,000,000  
Sales arrangement, total amount of product provided | oz 150,000    
Purchase arrangement, weighted average cost, percentage per annum 0.0445    
Purchase arrangement, average forward contract price $ 1,753    
Purchase arrangement, average forward contract price, gold basis | oz 50,000    
Purchase arrangement, collar range, gold basis | oz 100,000    
Sales arrangement, deferred delivery, amount of ounces | oz 6,250    
2024 Prepay Arrangement      
Disclosure of deferred income [Line Items]      
Purchase arrangement, weighted average cost, percentage per annum 0.113    
Purchase arrangement, average forward contract price $ 1,916    
Purchase arrangement, total amount of product provided | oz 31,250    
Proceeds from gold prepayment (to be received in Q1 2024) $ 59,900,000    
2022 and 2024 Combined Prepay Arrangement      
Disclosure of deferred income [Line Items]      
Sales arrangement, deferred delivery, amount of ounces | oz 37,500