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Changes in Non-cash Working Capital Items (Tables)
 12 Months Ended
Dec. 31, 2018
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Summary of Change in Non-cash Working Capital Items
     For the Years Ended December 31,  
     2018      2017  

Trade receivables

    $ (46 )     $ (1,059 ) 

Inventories

      (5,180 )       (1,197 ) 

Inventories reclassified to biological asset

      (659 )       306  

Other receivables

      172        (1,396 ) 

Income taxes payable

      68        (246 ) 

Prepaid expenses and deposits

      734        41  

Trade payables

      1,440        394  

Accrued liabilities

      (121 )       (955 ) 

Other assets, net of other liabilities

      42        (305 ) 
  

 

 

     

 

 

  
   $ (3,550 )     $ (4,417 )