Retirement Plan	12 Months Ended
	Apr. 30, 2021
Retirement Benefits [Abstract]
Retirement Plan	Retirement PlanThe Company maintains a 401(k) defined contribution retirement plan for its employees. Participants are allowed to choose from a selection of mutual funds in order to designate how both employer and employee contributions are invested. Under the plan, the Company matches 50% of each employee’s contributions on the first 4% of the employee’s compensation contributed. The Company contributed $3.2 million, $5.3 million and $4.7 million, during the years ended April 30, 2021, 2020 and 2019, respectively. In June 2020, the Company temporarily suspended matching contributions under the plan. In January 2021, the Company reinstated its matching contributions.