Share capital - Schedule of fair value assumptions of warrants (Details) - $ / shares |
12 Months Ended | ||
---|---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
|
Disclosure of warrants [Line Items] | |||
Expected dividend yield | 0.00% | 0.00% | |
Expected life (years) | 5 years | ||
Expected volatility | 96.00% | 120.00% | |
Bottom of range | |||
Disclosure of warrants [Line Items] | |||
Grant date share price | $ 2 | $ 2.58 | |
Exercise price | $ 1.53 | $ 3.46 | |
Risk free interest rate | 0.43% | 0.32% | |
Expected life (years) | 1 year 2 months 8 days | ||
Expected volatility | 88.00% | 118.00% | |
Top of range | |||
Disclosure of warrants [Line Items] | |||
Grant date share price | $ 2.04 | $ 4 | |
Exercise price | $ 2.5 | $ 5.8 | |
Risk free interest rate | 0.46% | 0.36% | |
Expected life (years) | 2 years | ||
Expected volatility | 129.00% | 121.00% |