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Inventories (Tables)
 12 Months Ended
Dec. 31, 2017
Inventories [abstract]  
Schedule of Inventories



 

 

 

 

 

 



 

 

December 31,

 

 

December 31,



 

 

 2017 

 

 

 2016 

Concentrate stockpiles

 

$

 2,594 

 

$

 1,285 

Ore stockpiles

 

 

 4,144 

 

 

 2,659 

Materials and supplies

 

 

 11,015 

 

 

 9,628 

Inventories

 

$

 17,753 

 

$

 13,572