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Share capital (Schedule of Warrant Issuances) (Narrative) (Details)
1 Months Ended
Jul. 31, 2016
CAD
shares
yr
Jun. 30, 2016
CAD
shares
yr
Broker Warrants [Member]    
Disclosure of classes of share capital [line items]    
Warrants granted | shares 224,728 388,886
Exercise price of warrants granted | CAD CAD 4.2 CAD 4.2
Exercise period of warrants granted | yr 2 2
Broker Units [Member]    
Disclosure of classes of share capital [line items]    
Exercise price of warrants granted | CAD CAD 4.68 CAD 4.68
Exercise period of warrants granted | yr 5 5