Equity-Based Compensation - (Tables)

9 Months Ended

Jan. 31, 2017

Equity-Based Compensation

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

	January 31, 2017
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	170,539	$	23.04
Options exercised	—		—
Options forfeited	—		—
Options expired	—		—
Outstanding at January 31, 2017	2,105,645	$	13.37	7.46	$	34,675
Exercisable at January 31, 2017	1,090,610	$	12.47	7.26	$	18,942
Expected to vest after January 31, 2017	1,015,035	$	14.34	7.67	$	15,733