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Assets held for sale (Tables)
 12 Months Ended
Dec. 31, 2021
Disclosure Of Assets Held For Sale [Abstract]  
Schedule of components of assets held for sale
    2021     2020  
    $     $  
Property and plant   8,647,779     8,610,504  
Schedule of net loss and comprehensive loss from discontinued operations
      For the year ended December 31,  
  Notes   2021     2020     2019  
      $     $     $  
Revenue     -     14,514     193,416  
Cost of revenue     -     1,032,010     1,473,839  
Gross loss before fair value adjustments     -     (1,017,496 )   (1,280,423 )
Fair value adjustments on inventory sold     -     (945 )   16,738  
Unrealized loss on changes in fair value of                    
biological assets     -     166,886     513,625  
Gross loss     -     (1,183,437 )   (1,810,786 )
                     
Expenses                    
General and administrative 19   1,412,392     1,665,541     2,735,286  
Depreciation and amortization     -     90,340     424,199  
Impairment of equipment     -     387,474     132,273  
Total operating expenses     1,412,392     2,143,355     3,291,758  
                     
Loss from discontinued operations     (1,412,392 )   (3,326,792 )   (5,102,544 )
                     
Other income     (64,919 )   (79,568 )   (53,987 )
Loss on sale of equipment     -     100,337     -  
Net loss from discontinued operations     (1,347,473 )   (3,347,561 )   (5,048,557 )
Schedule of cash flows from discontinued operations
    For the year ended December 31,  
    2021     2020     2019  
    $     $     $  
Operating activities                  
Net loss from discontinued operations   (1,347,473 )   (3,347,561 )   (5,048,557 )
Add (deduct) items not affecting cash                  
   Depreciation and amortization   -     108,209     424,199  
   Change in fair value adjustments on inventory sold   -     (945 )   16,738  
   Impairment of inventory   -     534,814     -  
   Impairment of equipment   -     387,474     -  
   Change in fair value of biological assets   -     166,886     513,625  
   Loss on disposal of inventory   -     197,436     -  
   Loss on sale of equipment   -     100,337     -  
Changes in non-cash working capital balances                  
      Other receivables   38,822     960,778     (423,945 )
      Prepaid expenses and deposits   (20,091 )   279,870     54,226  
      Inventories   -     (21,932 )   (709,373 )
      Biological assets   -     (166,886 )   (513,625 )
      Trade and other payables   (53,299 )   63,861     (895,286 )
Cash used in operating activities   (1,382,041 )   (737,659 )   (6,581,998 )