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
-Glossary Antidilution
-URI http://asc.fasb.org/extlink&oid=6505113

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Diluted Earnings Per Share
-URI http://asc.fasb.org/extlink&oid=6510752

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Contingent Stock Agreement
-URI http://asc.fasb.org/extlink&oid=6508534

Reference 4: 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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Aggregate dividends paid during the period for each share of common stock outstanding.

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Amount of paid and unpaid cash dividends declared for classes of stock, for example, but not limited to, common and preferred.

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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)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 405
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817

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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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-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
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-Paragraph 15
-Subparagraph (a)
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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
	May 31, 2016	May 06, 2016	Feb. 05, 2016	Nov. 06, 2015	Aug. 10, 2015	May 12, 2015	Feb. 11, 2015	Nov. 12, 2014	Aug. 14, 2014	May 31, 2016	May 31, 2015	May 31, 2016	May 31, 2015
Employee Stock Option [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount										688,538	0	688,538	0
Performance Shares [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount										937,089	485,129	937,089	485,129
Per Annum [Member]
Common Stock, Dividends, Per Share, Cash Paid		$ 2
Common Stock, Dividends, Per Share, Cash Paid		$ 0.50
Dividends, Cash	$ 20,200	$ 20,171	$ 18,044	$ 18,208	$ 18,179	$ 18,274	$ 16,236	$ 16,216	$ 16,299
Shares Paid for Tax Withholding for Share Based Compensation												19,892	23,192
Payments Related to Tax Withholding for Share-based Compensation												$ 3,300	$ 3,100