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CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) - $ / shares	Aug. 31, 2016	May 31, 2016	Aug. 31, 2015
Preferred stock par value per share (in Dollars per share)	$ 1	$ 1	$ 1
Common Stock, par value per share (in Dollars per share)	0.01	0.01	0.01
Common Class A
Common Stock, par value per share (in Dollars per share)	$ 0.01	$ 0.01	$ 0.01

X

- Definition

Face amount or stated value per share of common stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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X

- Definition

Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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