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Equity - Schedule of changes in warrants outstanding (Details) - Warrants [Member] | 12 Months Ended
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Mar. 31, 2021 Share $ / shares | Mar. 31, 2020 Share $ / shares
Disclosure of terms and conditions of share-based payment arrangement [Line Items] |  |
Number of other equity instruments outstanding, beginning balance | Share | 1,250,000 | 50,080,150
Number of other equity instruments expired | Share |  | (48,830,150)
Number of other equity instruments issued | Share | 5,000,000 |
Number of other equity instruments outstanding, ending balance | Share | 6,250,000 | 1,250,000
Weighted average exercise price of other equity instruments outstanding at beginning of period | $ / shares | $ 1.24 | $ 3.83
Weighted average exercise price of other equity instruments expired | $ / shares |  | 3.90
Weighted average exercise price of other equity instruments issued | $ / shares | 3.00 |
Weighted average exercise price of other equity instruments outstanding at end of period | $ / shares | $ 2.65 | $ 1.24

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- Definition The number of other equity instruments (ie other than share options) granted in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2020-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_47_b&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2020-01-01 -Paragraph 45 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2020-en-r&anchor=para_45&doctype=Standard -URIDate 2020-01-01 + Details
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