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Capital Stock (Tables)
6 Months Ended
Jun. 30, 2022
Stockholders' Equity Note [Abstract]  
Schedule of stock by class [Table Text Block]
    June 30,
2022
    December 31,
2021
 
             
Authorized -            
             
450,000,000 common shares of $0.00001 par value            
20,000,000 preferred shares of $0.00001 par value            
             
Issued -            
             
174,072,512 (December 31, 2021 -154,571,289) common shares $ 1   $ 1  
Schedule of proceeds of equity components [Table Text Block]
    Gross proceeds     Transaction costs     Net proceeds  
                   
Common stock $ 8,695   $ 297   $ 8,398  
Warrants   3,651     125     3,526  
  $ 12,346   $ 422   $ 11,924