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Treasury Stock	12 Months Ended
	May 31, 2017
Equity [Abstract]
Treasury Stock	NOTE 15 Treasury Stock The Corporation’s Board of directors from time to time has authorized the repurchase of shares of the Corporation’s common stock, in the open market or through negotiated transactions, at such times and at such prices as management may decide. In fiscal 2017 and 2016, the Corporation did not acquire any shares of its common stock.

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- References

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- Definition

The entire disclosure for treasury stock, including, but not limited to, average cost per share, description of share repurchase program, shares repurchased, shares held for each class of treasury stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-URI http://asc.fasb.org/subtopic&trid=2208821

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