Stock-Based Compensation (Tables)

12 Months Ended

Apr. 30, 2020

Share-based Payment Arrangement [Abstract]

Schedule of Nonvested Share Activity

A summary of nonvested shares, nonvested share units and deferred stock units, including those that are performance-based, for the year ended April 30, 2020, is as follows:

(shares in 000s)
	Nonvested Shares, Nonvested Share Units, and Deferred Stock Units				Performance-Based Nonvested Share Units
	Shares		Weighted-Average Grant Date  Fair Value		Shares		Weighted-Average Grant Date  Fair Value
Outstanding, beginning of the year	1,583		$	24.34	1,238		$	26.89
Granted	1,093		28.50		483		32.01
Released	(424	)	25.30		(450	)	25.36
Forfeited	(172	)	27.45		(26	)	30.09
Outstanding, end of the year	2,080		$	25.94	1,245		$	29.12

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions

The following assumptions were used to value performance-based nonvested share units using the Monte Carlo valuation model during the periods:

Year ended April 30,	2020			2019			2018
Expected volatility	13.47% - 66.33%			13.16% - 66.47%			13.33% - 81.19%
Expected term	3 years			3 years			3 years
Dividend yield (1)	0% - 3.55%			0% - 4.39%			0% - 3.23%
Risk-free interest rate	1.70		%	2.61		%	1.42% - 1.55%
Weighted-average fair value	$	32.01		$	24.48		$	32.66

⁽¹⁾ 

The valuation model assumes that dividends are reinvested by the Company on a continuous basis.

Share-based Compensation, Stock Options, Activity

A summary of options for the fiscal year ended April 30, 2020, is as follows:

(in 000s, except per share amounts)
	Shares		Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term	Aggregate Intrinsic Value
Outstanding, beginning of the year	439		$	25.47
Granted	—		—
Exercised	(11	)	16.89
Forfeited or expired	—		—
Outstanding, end of the year	428		$	25.68	6 years	$	13
Exercisable, end of the year	337		$	24.58	5 years	$	13
Exercisable and expected to vest	423		$	25.63	6 years	$	13