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Accounts Receivable - Summary of Accounts Receivable (Details) - CAD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Subclassifications Of Assets Liabilities And Equities [Abstract]    
Trade receivables $ 15,786 $ 24,684
Other receivables 112 2,954
Accounts receivable $ 15,898 $ 27,638