Equity-Based Compensation - Stock Option Activity (Details) - Stock Options - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	12 Months Ended
	Jul. 31, 2021	Apr. 30, 2021
Number of Options
Outstanding, beginning of the period (in shares)	1,289
Options exercised (in shares)	(44)
Options forfeited (in shares)	(3)
Outstanding, end of the period (in shares)	1,242	1,289
Exercisable at end of period (in shares)	661
Vested and expected to vest at end of period (in shares)	1,239
Weighted Average Exercise Price
Outstanding, beginning of period (in dollars per share)	$ 20.86
Options exercised (in dollars per share)	19.75
Options forfeited (in dollars per share)	23.31
Outstanding, end of the period (in dollars per share)	20.89	$ 20.86
Exercisable at end of period (in dollars per share)	18.90
Vested and expected to vest at end of period (in dollars per share)	$ 20.89
Other disclosures
Weighted Average Remaining Contractual Life, Outstanding (in years)	6 years 6 months	6 years 9 months 18 days
Weighted Average Remaining Contractual Life, Exercisable at end of period (in years)	5 years
Weighted Average Remaining Contractual Life, Vested and expected to vest at end of period (in years)	6 years 6 months
Aggregate Intrinsic Value, Outstanding	$ 35,084	$ 29,465
Aggregate Intrinsic Value, Exercisable at end of period	19,981
Aggregate Intrinsic Value, Vested and expected to vest at end of period	$ 34,992