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Share-based compensation and warrant reserve (Details 4) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2023 shares $ / shares | Dec. 31, 2022 shares $ / shares | Dec. 31, 2021 shares $ / shares | Dec. 31, 2020 shares $ / shares
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |  |  |  |
Number of shares | shares | 9,951,602 | 8,880,324 | 6,751,997 | 8,141,004
Weighted average exercise price | $ / shares | $ 1.23 | $ 1.44 | $ 2 | $ 2.67
Weighted average remaining life (years) | 2 years 10 months 24 days |  |  |
Number of options exercisable | shares | 8,675,802 |  |  |
Options exercisable, exercise price | $ / shares | $ 1.3 |  |  |
Options exercisable, remaining contractual life | 2 years 8 months 19 days |  |  |
$0.56 – $1.00 [Member] |  |  |  |
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |  |  |  |
Number of shares | shares | 6,922,993 |  |  |
Weighted average exercise price | $ / shares | $ 0.91 |  |  |
Weighted average remaining life (years) | 3 years 5 months 15 days |  |  |
Number of options exercisable | shares | 5,647,193 |  |  |
Options exercisable, exercise price | $ / shares | $ 0.93 |  |  |
Options exercisable, remaining contractual life | 3 years 3 months 21 days |  |  |
$1.00 – $1.95 [Member] |  |  |  |
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |  |  |  |
Number of shares | shares | 893,609 |  |  |
Weighted average exercise price | $ / shares | $ 1.79 |  |  |
Weighted average remaining life (years) | 1 year 2 months 8 days |  |  |
Number of options exercisable | shares | 893,609 |  |  |
Options exercisable, exercise price | $ / shares | $ 1.79 |  |  |
Options exercisable, remaining contractual life | 1 year 2 months 8 days |  |  |
$ 2.05 [Member] |  |  |  |
Disclosure of number and weighted average remaining contractual life of outstanding share options [line items] |  |  |  |
Number of shares | shares | 2,135,000 |  |  |
Weighted average exercise price | $ / shares | $ 2.05 |  |  |
Weighted average remaining life (years) | 1 year 9 months 21 days |  |  |
Number of options exercisable | shares | 2,135,000 |  |  |
Options exercisable, exercise price | $ / shares | $ 2.05 |  |  |
Options exercisable, remaining contractual life | 1 year 9 months 21 days |  |  |

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