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SEGMENTED INFORMATION (Details 2) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Disclosure Of Operating Segments      
Exploration and evaluation assets - Mexico $ 9,826 $ 9,692  
Exploration and evaluation assets - Canada 1 37,089  
Total exploration and evaluation assets $ 9,827 $ 46,781 $ 43,338