Loan Receivable - Summary of Information for Loan Receivable (Detail) - CAD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Disclosure of loan receivable [line items]
Add: Accrued interest	$ 49	$ 49
Loan receivable	314	314
Evergreen Medicinal Supply Inc. [member]
Disclosure of loan receivable [line items]
Loan receivable excluding accrued interest	$ 265	$ 265

The amount of interest income on loans and receivables. [Refer: Interest income; Loans and receivables]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_112_c&doctype=Standard
-URIDate 2017-03-09

Name:	ifrs-full_InterestIncomeOnLoansAndReceivables
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration