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Fair Value Measurements (Tables)
 12 Months Ended
Apr. 30, 2022
Fair Value Disclosures [Abstract]  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

 

   April 30, 2022   April 30, 2021 
Dividend rate   N/A    0.0%
Risk-free rate   N/A    0.01% -0.02%
Expected life (years)   N/A    0.2 - 0.6 
Expected volatility   N/A    1.498