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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