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Compensation Related Costs and Share Based Payments (Tables)
3 Months Ended
Jul. 31, 2021
Share-based Payment Arrangement [Abstract]  
Schedule of Restricted Stock Units Award Activity
Information concerning the unvested restricted stock units under the 2009 Plan and the 2018 Plan is presented in the following table (at July 31, 2021, there are no longer any awards under the 2009 Plan):
Unvested at April 30, 2021646,920 
Granted137,527 
Vested(231,426)
Forfeited(14,232)
Performance Award Adjustments(52,574)
Unvested at July 31, 2021486,215