Equity-Based Compensation - (Tables)

6 Months Ended

Oct. 31, 2021

Share-based Payment Arrangement [Abstract]

Summary of stock option activity

The following table presents stock option activity for the six months ended October 31, 2021:

	Number of Options	Weighted Average Exercise Price		Weighted Average Remaining Contractual Life (years)	Aggregate Intrinsic Value
	(shares and dollars in thousands)
Outstanding as of April 30, 2021	1,289	$	20.86	6.8	$	29,465
Options granted	188	49.13
Options exercised	(96)	19.37
Options forfeited	(12)	23.06
Outstanding as of October 31, 2021	1,369	$	24.84	6.8	$	33,798
Exercisable as of October 31, 2021	856	$	20.27	5.6	$	25,055
Vested and Expected to vest as of October 31, 2021	1,364	$	24.81	6.8	$	33,723

Schedule of the fair value of stock options assumptions

The fair value of stock options granted during the six months ended October 31, 2021 and 2020 was estimated using the Black-Scholes option-pricing model with the following assumptions and resulting weighted average grant date fair value:

	Six Months Ended October 31,
	2021			2020
Volatility	42.42		%	51.28		%
Expected life (years)	6.0			6.0
Risk-free interest rate	0.85		%	0.30		%
Dividend yield	—		%	—		%
Grant date fair value	$	20.24		$	11.13

Summary of restricted stock unit activity

The following table presents restricted stock unit activity for the six months ended October 31, 2021:

	Number of Restricted Stock Units	Weighted Average Grant Date Fair Value
	(shares in thousands)
Outstanding as of April 30, 2021	361	$	22.92
Granted	155	49.13
Vested	(179)	23.05
Forfeited	(6)	23.02
Outstanding as of October 31, 2021	331	$	35.12