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Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Schedule of Warrants (Details)

v3.22.2
Stockholders' Equity - Schedule of Warrants (Details) - Warrant - USD ($)
 12 Months Ended
Apr. 30, 2022
Apr. 30, 2021
Apr. 30, 2022
Number of Shares Ìý Ìý Ìý
Balance Outstanding, April 30, 2021 (in shares) Ìý Ìý 374,174
Granted (in shares) Ìý Ìý 275,000
Exercised (in shares) Ìý Ìý 0
Surrendered (in shares) Ìý Ìý 0
Expired (in shares) Ìý Ìý 0
Balance Outstanding, April 30, 2022 (in shares) 649,174 374,174 649,174
Exercisable, April 30, 2022 (in shares) 624,174 Ìý 624,174
Weighted Average Exercise Price Ìý Ìý Ìý
Balance Outstanding, April 30, 2021 (in dollars per share) Ìý Ìý $ 6.37
Granted (in dollars per share) Ìý Ìý 2.43
Exercised (in dollars per share) Ìý Ìý 0
Surrendered (in dollars per share) Ìý Ìý 0
Expired (in dollars per share) Ìý Ìý 0
Balance Outstanding, April 30, 2022 (in dollars per share) $ 4.70 $ 6.37 4.70
Exercise price of options (in dollars per share) $ 4.61 Ìý $ 4.61
Weighted Average Remaining Contractual Term Ìý Ìý Ìý
Balance Outstanding, April 30, 2021 1 year 11 months 15 days 1 year 10 months 24 days Ìý
Granted Ìý Ìý 4 years 9 months 18 days
Balance Outstanding, April 30, 2022 1 year 11 months 15 days 1 year 10 months 24 days Ìý
Exercisable, April 30, 2022 Ìý Ìý 2 years 5 months 23 days
Aggregate Intrinsic Value Ìý Ìý Ìý
Balance Outstanding, April 30, 2021 Ìý Ìý $ 0
Balance Outstanding, April 30, 2022 $ 0 $ 0 0
Exercisable, April 30, 2022 $ 0 Ìý $ 0