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v3.20.4

Shareholders Equity and Capital Stock (Details 5) - $ / shares | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Grant date fair value (CAD$) | $ 0.63 | $ 0.79 |
Expected forfeiture rate | 4.20% | 4.80% |
Minimum [Member] |  |  |
Grant date fair value (CAD$) |  |  | $ 0.91
Expected forfeiture rate |  |  | 5.50%
Maximum [Member] |  |  |
Grant date fair value (CAD$) |  |  | $ 0.93
Expected forfeiture rate |  |  | 5.90%

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