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Note 17 – Share Based Awards (Tables)
12 Months Ended
Apr. 30, 2023
Share-Based Payment Arrangement [Abstract]  
[custom:ScheduleOfAssumptionsUsed1TableTextBlock]
    2023    2022 
Exercise Price  $0.892.38   $1.692.82 
Stock price on date of grant   0.892.38    1.692.82 
Risk-free interest rate    3.344.18%   0.471.91% 
Dividend yield            
Expected term (years)   6.258.25    3.75 10.00 
Volatility   245.57260.06%   210.68273.46% 
Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block]
  Shares   Weighted-Average Exercise Price   Weighted-Average Remaining Contractual Term   Aggregate Intrinsic Value
Outstanding as of April 30, 2021     2,197,475     $ 1.79       8.68        4,943,870   
Granted     1,681,000       2.58                  
Exercised     (150,000     2.49                  
Forfeited or expired     (34,333     2.11                  
Outstanding as of April 30, 2022     3,694,142     2.17       8.56        1,407,545   
Granted     1,503,500       1.40                  
Exercised                                  
Forfeited or expired     (412,833     2.67                  
Outstanding as of April 30, 2023     4,784,809     1.88       8.72     74,586  
Exercisable as of April 30, 2023     3,025,184     $ 2.00       7.25     $ 74,586  
Share-Based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]
  Shares  Weighted Average Grant-Date Fair Value Per Share
Unvested and outstanding as of April 30, 2021   687,500   $2.69 
Granted   995,659    2.55 
Vested   (599,484)   2.64 
Forfeited            
Unvested and outstanding as of April 30, 2022   1,083,675    2.59 
Granted   780,884    2.14 
Vested   (1,062,372)   2.42 
Forfeited   (21,127)   2.13 
Unvested and outstanding as of April 30, 2023   781,060   $2.44 
Schedule of Deferred Compensation Arrangement with Individual, Share-Based Payments [Table Text Block]
   2023  2022
General and administrative  $1,608,715   $1,521,951 
Research and development   692,947    516,456 
Operations   788,909    783,781 
Sales and marketing   566,153    469,447 
 Total  $3,656,724   $3,291,635