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Share Capital - Acquisitions - Summary of Equity Issuances Related to Acquisitions (Details) (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
R Trees
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items]
Share issue costs	69
Spot
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items]
Share issue costs	9
Green Hemp
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items]
Share issue costs	$ 9
Mettrum Hempworks Inc.
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items]
Share issue costs		$ 997

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- Definition

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- Definition

The amount of cost related to the issuance of shares.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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