Stock-Based Compensation

3 Months Ended

Aug. 31, 2016

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

STOCK-BASED COMPENSATION

The following table summarizes stock-based compensation expense included in Selling, general and administrative expenses for the periods indicated:



	Three months ended
	August 31,		August 31,
	2016		2015
Stock option expense	$	0.8	$	0.7
Restricted stock unit expense	0.7		0.6
Management stock purchase plan	0.0		0.0
Employee stock purchase plan	0.1		0.1
Total stock-based compensation expense	$	1.6	$	1.4

During the three month periods ended August 31, 2016 and August 31, 2015, respectively, 0.2 million and 1.0 million shares of Common Stock were issued by the Corporation pursuant to its stock-based compensation plans.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

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