Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
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Amount of cash outflow to satisfy an employee's income tax withholding obligation as part of a net-share settlement of a share-based award.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 25
-Paragraph 19A
-URI http://asc.fasb.org/extlink&oid=96949009&loc=SL79513924-113897

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For net-share settlement of share-based awards when the employer settles employees' income tax withholding obligations, this element represents the number of shares the employees use to repay the employer.

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Note 12 - Common Stock and Earnings Per Share (Details Textual) - USD ($) $ / shares in Units, $ in Thousands										3 Months Ended		9 Months Ended
	Jun. 19, 2017	May 05, 2017	Feb. 06, 2017	Nov. 10, 2016	Aug. 05, 2016	May 06, 2016	Feb. 05, 2016	Nov. 06, 2015	Aug. 10, 2015	May 31, 2017	May 31, 2016	May 31, 2017	May 31, 2016
Common Stock, Dividends, Per Share, Cash Paid		$ 0.56
Dividends, Cash	$ 22,000	$ 21,951	$ 19,709	$ 19,852	$ 20,019	$ 20,171	$ 18,044	$ 18,208	$ 18,179
Shares Paid for Tax Withholding for Share Based Compensation												37,042	19,892
Payments Related to Tax Withholding for Share-based Compensation												$ 5,700	$ 3,300
Employee Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount										492,649	688,538	492,649	688,538
Performance Shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount										754,561	937,089	754,561	937,089
Per Annum [Member]
Common Stock, Dividends, Per Share, Cash Paid		$ 2.24