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New Accounting Standards
 3 Months Ended
Aug. 31, 2013
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]  
Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Text Block]
NEW ACCOUNTING STANDARDS
During the first quarter of fiscal 2014, the company adopted Accounting Standards Update ("ASU") 2013-02, "Comprehensive Income (ASC Topic 220): Reporting of Amounts Reclassified Out of Accumulated Other Comprehensive Income," which requires entities to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, entities are required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income but only if the amount reclassified is required under U.S. GAAP to be reclassified to net income in its entirety in the same reporting period. For other amounts that are not required under U.S. GAAP to be reclassified in their entirety to net income, entities are required to cross-reference to other disclosures required under U.S. GAAP that provide additional detail on these amounts. Refer to Note 14 for the disclosures related to this adoption.