Derivatives (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($) $ / t	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) $ / t $ / oz t oz	Jun. 30, 2021 USD ($)	Dec. 31, 2021 USD ($)
Embedded Derivative [Line Items]
Unsettled sales contracts value			$ 32,063
Realized loss on embedded derivative	$ (1,160)	$ (359)	(2,026)	$ (450)
Unrealized gain (loss) - embedded derivative, net	(3,324)	$ 310	(2,156)	$ 184
Derivative Asset, Current	275		$ 275
Gold
Embedded Derivative [Line Items]
Under contract | oz			5,029
Average forward price | $ / oz			1,845
Unsettled sales contracts value			$ 9,279
Silver.
Embedded Derivative [Line Items]
Under contract | oz			158,039
Average forward price | $ / oz			21.87
Unsettled sales contracts value			$ 3,456
Copper
Embedded Derivative [Line Items]
Under contract | t			163
Average forward price | $ / t			9,092
Unsettled sales contracts value			$ 1,482
Lead
Embedded Derivative [Line Items]
Under contract | t			1,711
Average forward price | $ / t			2,157
Unsettled sales contracts value			$ 3,691
Zinc
Embedded Derivative [Line Items]
Under contract | t			3,553
Average forward price | $ / t			3,984
Unsettled sales contracts value			$ 14,155
Realized loss on embedded derivative			(2,500)
Unrealized gain (loss) - embedded derivative, net			$ 2,100
Mark to market adjustment on number of tonnes | t			3,900
Derivative Asset, Current	$ 300		$ 300
Call option sold price per tonne | $ / t			3,500
Call option sold volume | t			3,900
Derivative, Floor Price | $ / t	3,200		3,200
Zinc | Minimum
Embedded Derivative [Line Items]
Call option sold price per tonne | $ / t			3,318