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Stock-Based Compensation (Details) - USD ($) $ in Millions	3 Months Ended
	Sep. 01, 2018	Sep. 02, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 2.5	$ 1.3
Related income tax effect	$ 0.6	$ 0.5
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]
Stock Options	265,739	150,556
Restricted Stock Units (RSUs)
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]
Restricted Stock Units	95,587	90,671
Performance Share Units	95,587	90,671
Performance Share Units
Employee Service Share-based Compensation, Aggregate Disclosures [Abstract]
Restricted Stock Units	239,679	130,179
Performance Share Units	239,679	130,179

X

- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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Number of non-option equity instruments exercised by participants.

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