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Investments in Associates - Summary of Investments in Associates (Parenthetical) (Details) - CAD ($) |  |  |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Dec. 08, 2017 | Nov. 27, 2017 | Dec. 21, 2016 | Sep. 30, 2017 | Mar. 31, 2018 | Mar. 31, 2017
Disclosure Of Significant Investments In Associates [Line Items] |  |  |  |  |  |
Percentage of voting equity interests acquired |  |  |  |  | 0.00% |
Investments in associates |  |  |  |  | $ 63,106,000 | $ 0
Radicle Medical Marijuana Inc |  |  |  |  |  |
Disclosure Of Significant Investments In Associates [Line Items] |  |  |  |  |  |
Interest rate of debenture |  |  |  |  | 5.00% |
Royalty term |  |  |  |  | 20 years |
Amount advanced under convertible debenture |  |  |  |  | $ 5,000,000 |
Amount advanced under repayable debenture |  |  |  |  | 3,000,000 |
Radicle Medical Marijuana Inc | Convertible Debenture |  |  |  |  |  |
Disclosure Of Significant Investments In Associates [Line Items] |  |  |  |  |  |
Investments in associates |  |  |  |  | 5,000,000 |
Radicle Medical Marijuana Inc | Repayable Debenture |  |  |  |  |  |
Disclosure Of Significant Investments In Associates [Line Items] |  |  |  |  |  |
Investments in associates |  |  |  |  | 5,000,000 |
TerrAscend Corp |  |  |  |  |  |
Disclosure Of Significant Investments In Associates [Line Items] |  |  |  |  |  |
Number of units directly subscribed | 9,545,456 |  |  |  |  |
Purchase value of units | $ 1.10 |  |  |  |  |
Number of common shares included in unit | 1 |  |  |  |  |
Number of common share to purchase warrant included in unit | 1 |  |  |  |  |
Exercise price of warrants | $ 1.10 |  |  |  |  |
Purchase price of shares |  |  |  |  | 13,460,000 |
Purchase price of warrants |  |  |  |  | $ 7,540,000 |
Number of additional common shares directly subscribed |  | 1,740,000 |  |  |  |
Purchase price of additional shares |  | $ 1.00 |  |  |  |
Percentage of voting equity interests acquired |  |  |  |  | 24.00% |
Investment cost capitalized |  |  |  |  | $ 38,000 |
Percentage sale of current production |  |  |  |  | 25.00% |
Term of Production to be sold |  |  |  |  | 2 years |
Renewal Term of Production to Be Sold |  |  |  |  | 1 year |
TerrAscend Corp | Canopy Rivers Corporation |  |  |  |  |  |
Disclosure Of Significant Investments In Associates [Line Items] |  |  |  |  |  |
Number of units indirectly subscribed | 9,545,456 |  |  |  |  |
Number of additional common shares indirectly subscribed |  | 1,740,000 |  |  |  |
Canopy Rivers Corporation |  |  |  |  |  |
Disclosure Of Significant Investments In Associates [Line Items] |  |  |  |  |  |
Percentage of debentures converted to common shares |  |  |  |  | 23.80% |
Canopy Health Innovations Inc. |  |  |  |  |  |
Disclosure Of Significant Investments In Associates [Line Items] |  |  |  |  |  |
Percentage of voting equity interests acquired |  |  | 46.15% |  | 43.00% | 0.00%
Investments in associates |  |  |  | $ 4,000,000 |  |
Proceeds from issuing shares |  |  | $ 7,000,000 | $ 8,842,000 |  |
Bedrocan Brasil S.A. |  |  |  |  |  |
Disclosure Of Significant Investments In Associates [Line Items] |  |  |  |  |  |
Percentage of voting equity interests acquired |  |  |  |  | 39.762% |
Entourage Phytolab S.A. |  |  |  |  |  |
Disclosure Of Significant Investments In Associates [Line Items] |  |  |  |  |  |
Percentage of voting equity interests acquired |  |  |  |  | 39.99% |

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