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Royalty and Other Property Interests - Narrative (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
USD ($)
royalty
Dec. 31, 2022
USD ($)
Sep. 01, 2023
Categories Of Royalty And Other Property Interests [Line Items]      
Milestone payment $ 0 $ 4  
Impairment charge $ 70 5,526  
Barrick Gold Corporation And Barrick Affiliates And Subsidiaries [Member] | Bullion Monarch Mining, Inc [Member]      
Categories Of Royalty And Other Property Interests [Line Items]      
Claim of non payment of royalties   25,000  
Contingency fee   6,175  
Loss contingency, receivable, proceeds   $ 18,825  
Timok | NSR Royalty That Is Uncapped      
Categories Of Royalty And Other Property Interests [Line Items]      
Net smelter return royalty, percentage     0.3625%
Gediktepe Royalty      
Categories Of Royalty And Other Property Interests [Line Items]      
Number of royalties | royalty 2    
Impairment charge $ 5,448    
Term of mine life 15 years    
Change in long term prices of gold and copper result difference in recoverable amount $ 1,027    
Amount of 10 percentage increase in respective discount rates result in reduction of recoverable amount $ 1,125    
Gediktepe Royalty | NSR royalty over metals produced from the oxide zone      
Categories Of Royalty And Other Property Interests [Line Items]      
Net smelter return royalty, percentage 10.00%    
Ounces of gold equivalent to payment 10,000    
Gediktepe Royalty | NSR royalty over metals produced from the sulfide zone      
Categories Of Royalty And Other Property Interests [Line Items]      
Net smelter return royalty, percentage 2.00%    
Ounces of gold equivalent to payment 25,000    
Gediktepe Royalty | First Anniversary Date      
Categories Of Royalty And Other Property Interests [Line Items]      
Ounces of gold equivalent to payment 10,000    
Milestone payment $ 4,000    
Leeville Mine      
Categories Of Royalty And Other Property Interests [Line Items]      
Gross smelter return royalty (in percent) 1.00%    
Gold Tax Percentage 5.00%    
Balya Project | Türkiye      
Categories Of Royalty And Other Property Interests [Line Items]      
Net smelter return royalty, percentage 4.00%    
Gold Bar South      
Categories Of Royalty And Other Property Interests [Line Items]      
Net smelter return royalty, percentage 1.00%