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Disclosure of detailed information about non-cash working capital (Details) - USD ($)
$ in Thousands
6 Months Ended
Feb. 28, 2019
Feb. 28, 2018
Statements [Line Items]    
Amounts receivable, prepaid expenses and other assets $ (625) $ (578)
Accounts payable and accrued liabilities 724 (29)
Net change in non-cash working capital $ 99 $ (607)