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Derivatives (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2022
USD ($)
$ / t
Sep. 30, 2022
USD ($)
$ / t
$ / oz
t
oz
Dec. 31, 2021
USD ($)
Embedded Derivative [Line Items]      
Unsettled sales contracts value   $ 30,486  
Realized loss on embedded derivative $ 1,212    
Unrealized gain (loss) - embedded derivative, net 278    
Derivative Asset, Current 432 $ 432
Gold      
Embedded Derivative [Line Items]      
Under contract | oz   4,784  
Average forward price | $ / oz   1,741  
Unsettled sales contracts value   $ 8,329  
Silver.      
Embedded Derivative [Line Items]      
Under contract | oz   253,342  
Average forward price | $ / oz   19.52  
Unsettled sales contracts value   $ 4,945  
Copper      
Embedded Derivative [Line Items]      
Under contract | t   282  
Average forward price | $ / t   7,738  
Unsettled sales contracts value   $ 2,182  
Lead      
Embedded Derivative [Line Items]      
Under contract | t   1,647  
Average forward price | $ / t   2,011  
Unsettled sales contracts value   $ 3,312  
Zinc      
Embedded Derivative [Line Items]      
Under contract | t   3,373  
Average forward price | $ / t   3,474  
Unsettled sales contracts value   $ 11,718  
Realized loss on embedded derivative   (2,400)  
Unrealized gain (loss) - embedded derivative, net   $ 2,300  
Mark to market adjustment on number of tonnes | t   1,950  
Derivative Asset, Current $ 400 $ 400  
Call option sold price per tonne | $ / t   3,500  
Call option sold volume | t   1,950  
Derivative, Floor Price | $ / t 3,200 3,200  
Zinc | Minimum      
Embedded Derivative [Line Items]      
Call option sold price per tonne | $ / t   3,313  
Zinc | Maximum      
Embedded Derivative [Line Items]      
Derivative, Average Cap Price | $ / t 3,660 3,660