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General and administrative (Tables)
 12 Months Ended
Dec. 31, 2021
Selling, general and administrative expense [abstract]  
Schedule of general and administrative expense
    Year ended December 31,        
    2021     2020     2019  
    $     $     $  
Professional fees   6,256,165     2,734,123     3,101,136  
General office, insurance and administration expenditures   3,479,801     3,616,159     1,742,550  
Consulting fees   2,196,812     1,775,269     1,675,258  
Salaries, wages and benefits   2,856,887     2,656,162     1,705,696  
Investor relations   1,642,653     541,944     2,241,275  
Building and facility costs   759,590     586,926     676,798  
Foreign exchange gain (loss)   146,587     (186,959 )   -  
    17,338,495     11,723,624     11,142,713  
Allocated to:                  
Continuing operations   15,926,103     10,058,083     8,407,427  
Discontinued operations   1,412,392     1,665,541     2,735,286