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Share-Based Compensation - Employee Stock Purchase Plan (Details)
 12 Months Ended
Aug. 14, 2023
shares
May 31, 2022
USD ($)
shares
Dec. 31, 2024
USD ($)
shares
Dec. 31, 2023
USD ($)
shares
Share-Based Compensation        
Aggregate of common shares to the investors | shares 4,150,000      
Employee Share Purchase Plan        
Share-Based Compensation        
Aggregate of common shares to the investors | shares     10,988,032  
Issuance of common shares added to ESPP | shares     10,648,622  
Percentage of common stock shares outstanding     1.00%  
Number of additional shares added | shares     3,065,587  
Employee stock purchase plan offering period | $   24    
Employee stock purchase plan, purchase period | $   4    
Percentage of purchased share price   85.00%    
Percentage of employees contribution limited to employees annual gross earnings   15.00%    
Employee annual gross earnings not to exceed amount per year | $   $ 25,000    
Employee purchases in any offering period cannot exceed common shares | shares   15,000    
Percentage of employees purchases capped not to exceed total outstanding common shares   5.00%    
Number of share purchase under Employee Stock Purchase Plan (in shares) | shares     47,809 173,672
Share based compensation expense | $     $ 37,000 $ 47,000,000
Employee Share Purchase Plan | Exploration and evaluation activities        
Share-Based Compensation        
Share based compensation expense | $     19,000 26,000
Employee Share Purchase Plan | General and administration expenses        
Share-Based Compensation        
Share based compensation expense | $     $ 18,000 $ 21,000