Equity-Based Compensation - (Tables)

6 Months Ended

Oct. 31, 2015

Equity-Based Compensation

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

	October 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 October 31, 2016	2,100,742	$	13.36	7.71	$	15,598
Exercisable at October 31, 2016	942,188	$	12.47	7.52	$	7,829
Expected to vest after October 31, 2016	1,158,554	$	14.07	7.87	$	7,769