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SEGMENTED INFORMATION (Details 3) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Disclosure Of Operating Segments      
Plant, equipment and mining properties - Mexico $ 36,484 $ 28,834 $ 24,578
Plant, equipment and mining properties - Canada 2,259 3,324 3,498
Total plant, equipment and mining properties $ 38,743 $ 32,158 $ 28,076