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Equity - Schedule of changes in stock options outstanding (Details)
 12 Months Ended
Mar. 31, 2021
Share
$ / shares
Mar. 31, 2020
Share
$ / shares
Disclosure of equity and share based arrangement [Abstract]    
Number of stock options, beginning balance | Share 20,893,168 20,216,952
Number of stock options granted | Share 1,138,000 3,000,000
Number of stock options forfeited | Share (1,000,000) (853,846)
Number of stock options exercised | Share (7,476,972) (1,469,938)
Number of stock options, ending balance | Share 13,554,196 20,893,168
Weighted average exercise price, beginning balance | $ / shares $ 0.57 $ 0.61
Weighted average exercise price, granted | $ / shares 4.52 0.29
Weighted average exercise price, forfeited | $ / shares 0.62 1.03
Weighted average exercise price, exercised | $ / shares 0.63 0.30
Weighted average exercise price, ending balance | $ / shares $ 0.87 $ 0.57