Equity-Based Compensation - (Tables)

3 Months Ended

Jul. 31, 2019

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	85		18.04
Options exercised	(9)		14.77
Options forfeited	(6)		37.49
Options expired	—		—
Outstanding as of July 31, 2019	2,150	$	16.36	6.04	$	15,284
Exercisable as of July 31, 2019	1,645	$	13.70	5.16	$	14,902
Vested and expected to vest as of July 31, 2019	2,144	$	16.33	6.03	$	15,284

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

	Three Months
	Ended
	July 31, 2019
Volatility	48.96	%
Expected life (years)	6.0
Risk-free interest rate	2.36	%
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	42		18.04
Vested	—		—
Forfeited	(2)		37.49
Outstanding as of July 31, 2019	233	$	24.09