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Segmented Information - Schedule of Non-current Assets and Revenue by Geographical Segment (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
NON-CURRENT ASSETS          
Non-current assets $ 50,066   $ 50,066   $ 39,811
Revenue          
ORGANOCLAY SALES 1,420 $ 1,059 3,371 $ 3,838  
Canada          
NON-CURRENT ASSETS          
Non-current assets 51   51   41
United States          
NON-CURRENT ASSETS          
Non-current assets 19,532   19,532   19,377
Revenue          
ORGANOCLAY SALES 1,420 $ 1,059 3,371 $ 3,838  
Germany          
NON-CURRENT ASSETS          
Non-current assets 672   672   756
Argentina          
NON-CURRENT ASSETS          
Non-current assets $ 29,811   $ 29,811   $ 19,637