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Related Parties - Summary of Key Management Personnel Compensation (Details) - CAD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Disclosure Of Transactions Between Related Parties [Abstract]    
Short-term employee benefits $ 3,746 $ 1,420
Share-based compensation 5,786 1,535
Total $ 9,532 $ 2,955