XML 73 R58.htm IDEA: XBRL DOCUMENT v3.21.2
Derivatives (Details)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 11, 2021
$ / t
t
Sep. 30, 2021
USD ($)
$ / t
Sep. 30, 2020
USD ($)
Sep. 30, 2021
USD ($)
$ / oz
$ / t
t
oz
Sep. 30, 2020
USD ($)
Embedded Derivative [Line Items]          
Unsettled sales contracts value       $ 19,741  
Realized loss   $ (246) $ 653 204 $ 250
Unrealized loss   $ (232) $ (103) $ (48) $ (232)
Gold          
Embedded Derivative [Line Items]          
Under contract | oz       2,579  
Average forward price | $ / oz       1,770  
Unsettled sales contracts value       $ 4,565  
Silver          
Embedded Derivative [Line Items]          
Under contract | oz       118,576  
Average forward price | $ / oz       23.07  
Unsettled sales contracts value       $ 2,736  
Copper          
Embedded Derivative [Line Items]          
Under contract | t       146  
Average forward price | $ / t       9,324  
Unsettled sales contracts value       $ 1,361  
Lead          
Embedded Derivative [Line Items]          
Under contract | t       740  
Average forward price | $ / t       2,261  
Unsettled sales contracts value       $ 1,673  
Zinc          
Embedded Derivative [Line Items]          
Under contract | t       3,148  
Average forward price | $ / t       2,988  
Unsettled sales contracts value       $ 9,406  
Average price | $ / t   3,042   3,042  
Realized loss       $ 40  
Unrealized loss       $ 100  
Mark to market adjustment on number of tonnes | t       2,550  
Call option sold price per tonne | $ / t 3,200     2,992  
Call option sold volume | t 4,000     5,500  
Derivative, Floor Price | $ / t 2,910 2,860   2,860