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Share Capital - Other - Summary of Other Equity Issuances (Details) - CAD ($) $ in Thousands |  |  |  | 12 Months Ended
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Oct. 01, 2017 | Jul. 04, 2017 | Apr. 03, 2017 | Mar. 31, 2018 | Mar. 31, 2017
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] |  |  |  |  |
Issuance of shares for acquired intangible - net of share issue costs |  |  |  | 117,253 |
Total other share issuances, shares |  |  |  | 715,106 | 388,669
Issuance of shares for acquisition, Shares |  |  |  | 4,515,879 | 36,138,911
Issuance of shares per service agreements, shares |  |  |  |  | 156,240
Share capital |  |  |  |  |
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] |  |  |  |  |
Issuance of shares for acquired intangible - net of share issue costs |  |  |  | $ 3,225 |
Total other share issuances |  |  |  | 9,795 | $ 2,830
Issuance of shares per service agreements |  |  |  |  | 1,333
Share-based reserve |  |  |  |  |
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] |  |  |  |  |
Total other share issuances |  |  |  | $ (5,575) | $ (639)
LBC Holdings, Inc |  |  |  |  |
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] |  |  |  |  |
Shares released from escrow to LBC Holdings, Inc., shares |  |  |  | 87,836 |
Shares released from escrow related to the acquisition, shares | 87,836 | 87,836 | 87,836 |  | 138,032
LBC Holdings, Inc | Share capital |  |  |  |  |
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] |  |  |  |  |
Shares released from escrow to LBC Holdings, Inc. |  |  |  | $ 1,297 | $ 639
LBC Holdings, Inc | Share-based reserve |  |  |  |  |
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] |  |  |  |  |
Shares released from escrow to LBC Holdings, Inc. |  |  |  | $ (1,297) | $ (639)
BC Tweed Partner |  |  |  |  |
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] |  |  |  |  |
Shares issued to BC Tweed Partner for performance conditions, shares |  |  |  | 155,158 |
BC Tweed Partner | Share capital |  |  |  |  |
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] |  |  |  |  |
Shares issued to BC Tweed Partner for performance conditions |  |  |  | $ 1,880 |
BC Tweed Partner | Share-based reserve |  |  |  |  |
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] |  |  |  |  |
Shares issued to BC Tweed Partner for performance conditions |  |  |  | $ (1,880) |
Apollo/Bodystream |  |  |  |  |
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] |  |  |  |  |
Shares issued for Apollo/Bodystream earnout, shares |  |  |  | 243,493 |
Apollo/Bodystream | Share capital |  |  |  |  |
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] |  |  |  |  |
Shares issued for Apollo/Bodystream earnout |  |  |  | $ 2,398 |
Apollo/Bodystream | Share-based reserve |  |  |  |  |
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] |  |  |  |  |
Shares issued for Apollo/Bodystream earnout |  |  |  | $ (2,398) |
Niagara Asset Acquisition |  |  |  |  |
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] |  |  |  |  |
Issuance of shares for Niagara asset acquisition - net of share issue costs |  |  |  | 111,366 |
Niagara Asset Acquisition | Share capital |  |  |  |  |
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] |  |  |  |  |
Acquisition related share issuance's |  |  |  | $ 995 |
Hershey |  |  |  |  |
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] |  |  |  |  |
Issuance of shares for acquisition, Shares |  |  |  |  | 94,397
Hershey | Share capital |  |  |  |  |
Disclosure Of Terms And Conditions Of Sharebased Payment Arrangement [Line Items] |  |  |  |  |
Acquisition related share issuance's |  |  |  |  | $ 858

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