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INVESTMENTS (Tables)
 12 Months Ended
Dec. 31, 2019
Disclosure Of Investments [Abstract]  
Disclosure of detailed information about investments [Table Text Block]
          Accumulated        
December 31, 2019   Cost     unrealized (loss) gain     Fair value  
                   
Fair value through profit or loss                  
Marketable securities $ 3,915   $ (767 ) $ 3,148  
Warrants   314     515     829  
Private company investments   1,961     (444 )   1,517  
Total fair value through profit or loss   6,190     (696 )   5,494  
                   
Fair value through other comprehensive income                  
Marketable securities   910     (877 )   33  
Private company investments   4,580     -     4,580  
Total fair value through other comprehensive income   5,490     (877 )   4,613  
                   
Total investments $ 11,680   $ (1,573 ) $ 10,107  
 
          Accumulated        
December 31, 2018   Cost     unrealized loss     Fair value  
                   
Fair value through profit or loss                  
Marketable securities $ 1,683   $ (1,058 ) $ 625  
Private company investments   911     -     911  
Total fair value through profit or loss   2,594     (1,058 )   1,536  
                   
Fair value through other comprehensive income                  
Marketable securities   910     (877 )   33  
Total fair value through other comprehensive income   910     (877 )   33  
                   
Total investments $ 3,504   $ (1,935 ) $ 1,569