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Share capital - Schedule of reconciliation of the share capital (Details) - CAD ($) | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018
Disclosure of classes of share capital [line items] |  |
Beginning balance | $ 51,032,428 | $ 12,413,399
Shares issued | 11,539,417 | 47,853,745
Share issuance costs |  | (6,634,405)
Reverse acquisition |  | 10,012,779
Share based payments | 16,061,319 | 6,440,406
Share options exercised | 732,598 | 2,857,050
Warrants exercised | 94,991 | 800,078
Ending balance | 48,222,087 | 51,032,428
Class A shares |  |
Disclosure of classes of share capital [line items] |  |
Beginning balance | $ 201,500 | $ 201,500
Beginning balance (shares) | 72 | 72
Ending balance | $ 201,500 | $ 201,500
Ending balance (shares) | 72 | 72
Class B shares |  |
Disclosure of classes of share capital [line items] |  |
Beginning balance | $ 67,916,302 | $ 12,794,963
Beginning balance (shares) | 6,843,780 | 3,794,846
Shares issued | $ 11,539,417 | $ 47,853,745
Shares issued (shares) | 408,651 | 2,268,035
Issued on acquisition of net assets of Prismic Pharmaceuticals, Inc | $ 16,431,818 |
Issued on acquisition of net assets of Prismic Pharmaceuticals, Inc (shares) | 510,940 |
Share issuance costs |  | $ (6,634,405)
Reverse acquisition |  | $ 9,868,179
Reverse acquisition (shares) |  | 545,505
Warrant valuations |  | $ (2,366,670)
Share options exercised | $ 1,782,438 | $ 5,145,825
Share options exercised (shares) | 130,189 | 190,463
Warrants exercised | $ 145,174 | $ 1,254,665
Warrants exercised (shares) | 12,167 | 44,931
Ending balance | $ 97,815,149 | $ 67,916,302
Ending balance (shares) | 7,905,727 | 6,843,780
Warrants |  |
Disclosure of classes of share capital [line items] |  |
Beginning balance | $ 4,442,145 | $ 2,116,900
Beginning balance (shares) | 546,212 | 354,996
Issued on acquisition of net assets of Prismic Pharmaceuticals, Inc | $ 1,888,086 |
Issued on acquisition of net assets of Prismic Pharmaceuticals, Inc (shares) | 67,598 |
Reverse acquisition |  | $ 118,875
Reverse acquisition (shares) |  | 37,313
Warrant valuations |  | $ 2,366,670
Warrant valuations (shares) |  | 198,835
Share based payments |  | $ 294,287
Warrants exercised | $ (50,183) | $ (454,587)
Warrants exercised (shares) | (12,167) | (44,932)
Warrants expired | $ (535,014) |
Warrants expired (shares) | (134,192) |
Ending balance | $ 5,745,034 | $ 4,442,145
Ending balance (shares) | 467,451 | 546,212

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