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INVENTORIES (Tables)
12 Months Ended
Dec. 31, 2021
Inventory Disclosure [Abstract]  
Schedule of Inventory, Current
 December 31, 2021December 31, 2020
 Concentrates and work-in-progress (1)
$27,619 $25,768 
 Inventory of ore in stockpiles351 241 
 Raw materials and consumables4,170 2,912 
 $32,140 $28,921 
Inventories - by duration
   Current$30,772 $27,575 
   Long term - raw materials and consumables 1,368 1,346 
$32,140 $28,921 
(1)For the year ended December 31, 2021, the Company recorded an impairment loss of nil in the Consolidated Statement of Operations and Comprehensive Income (Loss) related to concentrates and work in progress inventories (December 31, 2020 - $1.64 million).