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Background and basis of preparation (Details) - USD ($)
$ / shares in Units, $ in Millions
6 Months Ended
Jun. 30, 2022
Dec. 31, 2021
Apr. 30, 2021
Ownership Interest      
Reverse stock split ratio 3    
IPO      
Ownership Interest      
Shares issued 14,388,000    
Issue price per share $ 11.75    
Proceeds from IPO $ 169.1    
Kaizen Discovery Inc      
Ownership Interest      
Percentage of Ownership interest acquired 82.70% 82.70%  
Cordoba Minerals Corp      
Ownership Interest      
Percentage of Ownership interest acquired 63.30% 63.30%  
VRB Energy Inc      
Ownership Interest      
Percentage of Ownership interest acquired 90.00% 90.00%  
Computational Geosciences Inc      
Ownership Interest      
Percentage of Ownership interest acquired 94.30% 94.30%  
HPX      
Ownership Interest      
Number of shares issued in restructuring activity     59,909,344
Number of shares issued per each shareholder     1