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Exploration and Evaluation Assets (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2022
USD ($)
customers
Dec. 31, 2021
USD ($)
Disclosure of detailed information about property, plant and equipment [line items]    
Purchase of exploration and evaluation assets $ 13,044 $ 12,672
Number of property option agreements | customers 2  
Interest of property, based upon certain conditions, percent 100.00%  
Commitment to minimum exploration costs to acquire exploration assets $ 7,200  
Ownership percentage if option to acquire is exercised 100.00%  
Sellers expected to retain net smelt royalties, percent (up to) 1.50%  
Carrying amount    
Disclosure of detailed information about property, plant and equipment [line items]    
Transfers to property, plant and equipment $ 35,083 0
Mineral property, plant and equipment    
Disclosure of detailed information about property, plant and equipment [line items]    
Purchase of exploration and evaluation assets 3,100  
Mineral property, plant and equipment | Carrying amount    
Disclosure of detailed information about property, plant and equipment [line items]    
Transfers to property, plant and equipment $ 1,512 $ 33,217