Equity-Based Compensation - Stock Option Activity (Details) - Stock Options $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended	12 Months Ended
	Oct. 31, 2021 USD ($) $ / shares shares	Apr. 30, 2021 USD ($) $ / shares shares
Number of Options
Outstanding, beginning of the period (in shares) | shares	1,289
Options granted (in shares) | shares	188
Options exercised (in shares) | shares	(96)
Options forfeited (in shares) | shares	(12)
Outstanding, end of the period (in shares) | shares	1,369	1,289
Exercisable at end of period (in shares) | shares	856
Vested and expected to vest at end of period (in shares) | shares	1,364
Weighted Average Exercise Price
Outstanding, beginning of period (in dollars per share) | $ / shares	$ 20.86
Options granted (in dollars per share) | $ / shares	49.13
Options exercised (in dollars per share) | $ / shares	19.37
Options forfeited (in dollars per share) | $ / shares	23.06
Outstanding, end of the period (in dollars per share) | $ / shares	24.84	$ 20.86
Exercisable at end of period (in dollars per share) | $ / shares	20.27
Vested and expected to vest at end of period (in dollars per share) | $ / shares	$ 24.81
Other disclosures
Weighted Average Remaining Contractual Life, Outstanding (in years)	6 years 9 months 18 days	6 years 9 months 18 days
Weighted Average Remaining Contractual Life, Exercisable at end of period (in years)	5 years 7 months 6 days
Weighted Average Remaining Contractual Life, Vested and expected to vest at end of period (in years)	6 years 9 months 18 days
Aggregate Intrinsic Value, Outstanding | $	$ 33,798	$ 29,465
Aggregate Intrinsic Value, Exercisable at end of period | $	25,055
Aggregate Intrinsic Value, Vested and expected to vest at end of period | $	$ 33,723