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Commitments and Contingencies (Narrative) (Details)
$ in Thousands, $ in Millions
3 Months Ended
Dec. 30, 2013
CAD ($)
Mar. 31, 2023
USD ($)
Mar. 31, 2023
CAD ($)
Dec. 31, 2022
USD ($)
Dec. 10, 2021
USD ($)
Leases [Line Items]          
Equipment purchase commitments   $ 1,000   $ 1,200  
Contingent consideration   2,144   2,179  
Contingent consideration, current   2,215   $ 2,211  
HudBay Michigan Inc          
Leases [Line Items]          
Percentage of voting equity interests acquired 100.00%        
Management payment   $ 2,200 $ 3    
Ownership interest purchase to be prevented   51.00% 51.00%    
Contingent consideration, current   $ 2,200      
HudBay Michigan Inc | Gold and silver streaming agreement with Osisko Bermuda Limited | Back Forty Project          
Leases [Line Items]          
Deposit amount         $ 37,200
Aquila Resources Inc. | Back Forty Project          
Leases [Line Items]          
Percentage of ownership interest held 100.00%        
Contingent consideration $ 9 4,400      
Contingent consideration due upon project financing $ 3        
Percentage of contingent consideration payable in shares 50.00%        
Contingent consideration payable in shares $ 3        
Right to repurchase ownership interest 51.00%        
Contingent consideration   2,200      
Contingent consideration, current   $ 2,200      
Aquila Resources Inc. | Back Forty Project | 90 days after the commencement of commercial production          
Leases [Line Items]          
Contingent consideration payable in cash $ 2        
Aquila Resources Inc. | Back Forty Project | 270 days after the commencement of commercial production          
Leases [Line Items]          
Contingent consideration payable in cash 2        
Aquila Resources Inc. | Back Forty Project | 450 days after the commencement of commercial production          
Leases [Line Items]          
Contingent consideration payable in cash $ 2        
HudBay Michigan Inc | HudBay Michigan Inc          
Leases [Line Items]          
Percentage of net smelter return royalty on production 1.00%        
HudBay Michigan Inc | Back Forty Project          
Leases [Line Items]          
Percentage of voting equity interests acquired at the asset acquisition date tied to the development of project 51.00%