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Commitments and contingencies (Tables)
 12 Months Ended
Dec. 31, 2022
Commitments and Contingencies Explanatory [Abstract]  
Schedule of commitments and contingencies
   Payments due by years 
($000s)  Total   2023   2024-25   2026-27   2028-29 
Secured note – interest   138,656    19,808    39,616    39,616    39,616 
Capital expenditure obligations   104,688    98,128    6,560    
-
    
-
 
Flow-through share expenditures   15,023    15,023    
-
    
-
    
-
 
Mineral interests   5,782    826    1,652    1,652    1,652 
Lease obligation   1,701    669    834    106    92 
    265,850    134,454    48,662    41,374    41,360