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Financial Instruments - Derivative Gains and Losses (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Disclosure of nature and extent of risks arising from financial instruments [line items]    
Gains (losses) on change in fair value of derivatives $ 5,302 $ 8,489
Zinc gains    
Disclosure of nature and extent of risks arising from financial instruments [line items]    
Gains (losses) on change in fair value of derivatives 1,701 137
Copper losses    
Disclosure of nature and extent of risks arising from financial instruments [line items]    
Gains (losses) on change in fair value of derivatives 0 (1,139)
Diesel gains    
Disclosure of nature and extent of risks arising from financial instruments [line items]    
Gains (losses) on change in fair value of derivatives 4,499 9,397
Other    
Disclosure of nature and extent of risks arising from financial instruments [line items]    
Gains (losses) on change in fair value of derivatives $ (898) $ 94