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Reclamation Liability (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2021
Dec. 31, 2023
Reclamation Liability        
Work performed on early action items   $ 2,289    
Environmental reclamation liability $ 534      
Asset retirement obligations $ 534 0    
Risk free interest rate 7.00%      
Inflation rate 2.70%      
Administrative Settlement Agreement and Order on Consent        
Reclamation Liability        
Work performed on early action items $ 0 2,289    
Environmental reclamation liability 0 $ 0   $ 765
Payment for cash collateral $ 7,500      
Cash collateral for a surety bond     $ 3,000