Equity-Based Compensation - (Tables)

3 Months Ended

Jul. 31, 2015

Equity-Based Compensation

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

	July 31, 2016
Volatility	41.10	%
Expected life (years)	6.0
Risk‑free interest rate	1.53	%
Dividend yield	—	%

Summary of stock option activity

				Weighted
		Weighted		average
		average		remaining	Aggregate
	Number of	exercise		contractual	intrinsic
	options	price		life (years)	value
Outstanding at May 1, 2016	1,935,106	$	12.37
Options granted	165,636	$	23.11
Options exercised	—		—
Options forfeited	—		—
Options expired	—		—
Outstanding at July 31, 2016	2,100,742	$	13.36	7.97	$	24,988
Exercisable at July 31, 2016	793,757	$	12.47	7.77	$	10,145
Expected to vest after July 31, 2016	1,306,985	$	13.89	8.08	$	14,843