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Share Capital - Other - Summary of Other Equity Issuances (Parenthetical) (Details) - CAD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items]
Share issue costs	$ 2,448	$ 2,448
Intangible Asset Acquisition
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items]
Share issue costs	14
Niagara Asset Acquisition
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items]
Share issue costs	$ 8

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

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- Definition

The amount of cost related to the issuance of shares.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2017-01-01
-Paragraph 106
-Subparagraph d
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_106_d&doctype=Standard
-URIDate 2017-03-09

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