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Commitments and Contractual Obligations - Narrative (Details)
m in Thousands, $ in Thousands
 1 Months Ended 3 Months Ended 12 Months Ended
Apr. 01, 2021
$ / oz
Apr. 30, 2007
USD ($)
$ / oz
Jun. 30, 2020
$ / oz
m
Dec. 31, 2021
T
Disclosure of contingent liabilities [line items]        
Consideration paid | $   $ 57,500    
Silver price ($/oz) | $ / oz 11.54 3.83 2.00  
Expansion drilling (in meters) | m     30  
Hellas Gold SA ("Hellas") | Zinc        
Disclosure of contingent liabilities [line items]        
Number of dry metric tonnes       50,000
Hellas Gold SA ("Hellas") | Lead And Silver Concentrates        
Disclosure of contingent liabilities [line items]        
Number of dry metric tonnes       12,000
Hellas Gold SA ("Hellas") | Gold Concentrate        
Disclosure of contingent liabilities [line items]        
Number of dry metric tonnes       130,000
Tuprag Metal Madencilik Sanayi Ve Ticaret AS | Gold Concentrate        
Disclosure of contingent liabilities [line items]        
Number of dry metric tonnes       55,000