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FINANCIAL INSTRUMENTS (Details Narrative) - USD ($)
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Jan. 01, 2016
Disclosure of risk management strategy related to hedge accounting [line items]        
Cash $ 3,419,532 $ 11,779,718   $ 5,401,109
Price Risk [Member]        
Disclosure of risk management strategy related to hedge accounting [line items]        
Asset and liability exposure, description

based on outstanding accounts receivable that were subject to pricing adjustments, a 10% change in metals prices would have an impact on net earnings (loss) of approximately $223,625 (2016 - $581,031, 2015 - $376,543).

      
Impact on net earning (loss) $ 223,625 581,031 $ 376,543  
Price Risk [Member] | Long-term investments [Member]        
Disclosure of risk management strategy related to hedge accounting [line items]        
Asset and liability exposure, description

a 10% change in market prices would have an impact on net earnings of approximately $3,377 (2016 - $2,672, 2015 – $2,797).

      
Impact on net earning (loss) $ 3,377 2,672 2,797  
Foreign Currency Risk [Member]        
Disclosure of risk management strategy related to hedge accounting [line items]        
Asset and liability exposure, description

a 10% fluctuation in the US/Mexican and US/Canadian exchange rates would impact the Company’s earnings for the year ended December 31, 2017 by approximately $326,558 (2016 - $350,284, 2015 - $35,342).

      
Impact on net earning (loss) $ 326,558 $ 350,284 $ 35,342  
Liquidity risk [Member]        
Disclosure of risk management strategy related to hedge accounting [line items]        
Cash 3,419,532      
Working capital $ 16,402,359