Income Taxes - Summary of Components of Deferred Tax (Detail) - CAD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Deferred tax liabilities      
Deferred tax liabilities $ (1,416) $ (1,457)  
Net deferred tax liability (1,416) (1,457) $ (195)
Non-capital losses carried forward [member]      
Deferred tax assets      
Deferred tax assets 5,690 2,400  
SR&ED [member]      
Deferred tax assets      
Deferred tax assets 28 28  
Inventory [member]      
Deferred tax liabilities      
Deferred tax liabilities (1,989) (51)  
Property, plant and equipments [member]      
Deferred tax liabilities      
Deferred tax liabilities (968) (158)  
Financing Fees [Member]      
Deferred tax assets      
Deferred tax assets 31    
Equity Accounted Investments [Member]      
Deferred tax liabilities      
Deferred tax liabilities (153)    
Investment [member]      
Deferred tax liabilities      
Deferred tax liabilities (91) (696)  
Health Canada License [member]      
Deferred tax liabilities      
Deferred tax liabilities (2,978) (2,962)  
Biological assets [member]      
Deferred tax liabilities      
Deferred tax liabilities $ (986) $ (18)