Investment in Whistler Medical Marijuana Company - Summarized financial information of Whistler Medical Marijuana Company (Detail) - CAD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Disclosure of associates [line items]    
Current assets $ 26,704 $ 8,086
Current liabilities 7,878 7,766
Revenue 4,082 554
Income from continuing operations 2,491 (1,190)
Whistler Medical Marijuana Company [member]    
Disclosure of associates [line items]    
Current assets 4,163 2,233
Non-current assets 13,645 3,855
Current liabilities 3,676 1,649
Non-current liabilities   865
Revenue 3,813 2,817
Income from continuing operations $ 814 $ 757