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EXPLORATION AND EVALUATION ASSETS (Tables)
 12 Months Ended
Dec. 31, 2018
Exploration And Evaluation Assets  
Schdule of Exploration and Evaluation Assets

    Durango, Mexico    

British Columbia

& Yukon, Canada

     Total  
 
                           
Balance, January 1, 2017   $ 7,979     $ 22,813     $ 30,792          
                                 
Costs incurred during 2017:                                
Mine and camp costs     -       4,301       4,301          
Provision for reclamation     -       3,762       3,762          
Effect of movements in exchange rates     555       1,604       2,159          
Drilling and exploration     418       348       766          
Depreciation of plant and equipment     -       716       716          
Interest and financing costs     -       377       377          
Geological and related services     -       264       264          
Water treatment and tailing storage facility costs     -       224       224          
Assessments and taxes     82       97       179          
Mineral exploration tax credit     -       (202 )     (202 )        
                                 
Balance, December 31, 2017   $ 9,034     $ 34,304     $ 43,338          
Costs incurred during 2018:                                
Mine and camp costs     -       3,143       3,143          
Drilling and exploration     346       1,142       1,488          
Depreciation of plant and equipment     -       540       540          
Interest and other costs     -       414       414          
Geological and related services     -       205       205          
Water treatment and tailing storage facility costs     -       53       53          
Assessments and taxes     86       29       115          
Assays     -       13       13          
Effect of movements in exchange rates     226       (2,754 )     (2,528 )        
                                 
Balance, December 31, 2018   $ 9,692     $ 37,089     $ 46,781