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Gold and Silver Stream Agreements - Narrative (Details)
 1 Months Ended 9 Months Ended 12 Months Ended
Jun. 30, 2020
USD ($)
oz
Sep. 30, 2025
USD ($)
Dec. 31, 2024
USD ($)
Nov. 30, 2017
USD ($)
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Deferred revenue   $ 86,491,000 $ 74,432,000  
Osisko Gold Stream Agreement        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Deferred revenue   $ 38,425,000 33,067,000  
Osisko Gold Stream Agreement | Aquila Resources Inc. | Gold        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Amount committed $ 50,000,000     $ 55,000,000
Cash acquisition costs 20,000,000      
Deposit amount 5,000,000      
Project debt finance first draw down $ 25,000,000      
Initial term of agreement 40 years      
Automatic renewal term of agreement 10 years      
Deferred revenue     $ 20,000,000  
Quarterly production deliverable (as a percent)   22.20% 22.20%  
Deposit liability   $ 30,000,000    
Threshold stream (as a percent) 18.50%      
Production Threshold | oz 105,000      
Trail stream (as a percent) 9.25%      
Spot price of gold (as a percent) 30.00%      
Maximum amount receivable on gold per ounce $ 600      
Osisko Gold Stream Agreement | Gold Resources Acquisition Company | Aquila Resources Inc. | Gold        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Ownership percentage 100.00%      
Osisko Silver Stream Agreement        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Deferred revenue   48,066,000 $ 41,365,000  
Osisko Silver Stream Agreement | Aquila Resources Inc. | Silver        
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]        
Commodity produced (as a percent) 85.00%      
Cash acquisition costs   $ 17,200,000    
Deposit amount $ 0      
Initial term of agreement 40 years      
Automatic renewal term of agreement 10 years      
Threshold price of silver at which deposit received is adjusted $ 4      
Deferred revenue     $ 17,200,000  
Quarterly production deliverable (as a percent)   22.20% 22.20%