Equity-Based Compensation - (Tables)

12 Months Ended

Apr. 30, 2020

Equity-Based Compensation

Summary of stock option activity

				Weighted
		Weighted		Average
		Average		Remaining	Aggregate
	Number of	Exercise		Contractual	Intrinsic
	Options	Price		Life (years)	Value
	(shares and dollars in thousands)
Outstanding as of April 30, 2019	2,080	$	16.34	6.15	$	7,615
Options granted	386		21.63
Options exercised	(874)		13.22
Options forfeited	(105)		25.73
Options expired	—		—
Outstanding as of April 30, 2020	1,487	$	18.85	6.40	$	3,895
Exercisable as of April 30, 2020	941	$	16.32	4.98	$	3,866
Vested and expected to vest as of April 30, 2020	1,481	$	18.83	6.39	$	3,895

Schedule of weighted average assumptions used in Black-Scholes option-pricing model

	Year Ended April 30,
	2020		2019		2018
Volatility	49.86	%	33.71	%	30.86	%
Expected life (years)	6.0		6.0		6.0
Risk-free interest rate	1.97	%	2.87	%	2.18	%
Dividend yield	—	%	—	%	—	%

Summary of restricted stock unity activity

		Weighted
	Number of	Average
	Restricted	Exercise
	Stock Units	Price
	(shares in thousands)
Outstanding as of April 30, 2019	193	$	25.48
Granted	233		21.67
Vested	(100)		24.48
Forfeited	(40)		25.29
Outstanding as of April 30, 2020	286	$	22.71