Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Schedule of Stock Option Activity (Details)

v3.20.2
Stockholders' Equity - Schedule of Stock Option Activity (Details) - $ / shares
12 Months Ended
Apr. 30, 2020
Apr. 30, 2019
Equity [Abstract]    
Number of Options Outstanding, Beginning of Period 145,646 153,146
Number of Options, Granted 5,000
Number of Options, Exercised
Number of Options, Forfeited (50,646) (7,500)
Number of Options, Cancelled
Number of Options Outstanding, End of Period 100,000 145,646
Number of Options exercisable at end of period 76,041  
Number of Options expected to vest 23,959  
Weighted Average Exercise Price Outstanding, Beginning of Period $ 18.00 $ 17.90
Weighted Average Exercise Price, Granted 8.10
Weighted Average Exercise Price, Exercised
Weighted Average Exercise Price, Forfeited 24.44 14.80
Weighted Average Exercise Price, Cancelled
Weighted Average Exercise Price Outstanding, End of Period 14.31 $ 18.00
Weighted Average Exercise Price Options exercisable at end of period 14.55  
Weighted Average Exercise Price Options expected to vest 13.54  
Weighted Average Exercise Price Weighted average fair value of options granted during the period $ 0.62  
Weighted Average Remaining Contractual Life (Years), Beginning of Period 2 years 3 months 15 days 3 years 5 months 5 days
Weighted Average Remaining Contractual Life in Years, Granted 10 years 0 years
Weighted Average Remaining Contractual Life (Years), Ending of Period 2 years 10 months 14 days 2 years 3 months 15 days