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Credit Arrangements (Long-Term Debt) (Details) $ in Thousands	May. 31, 2015 USD ($)
Debt Instrument [Line Items]
Total long-term debt	$ 117,404
Less current portion	(182)
Total long-term debt	117,222
Series 2006A Bonds [Member]
Debt Instrument [Line Items]
Total long-term debt	2,404
Senior Notes [Member]
Debt Instrument [Line Items]
Total long-term debt	$ 115,000

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- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



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-Name Accounting Standards Codification



-Topic 942



-SubTopic 210



-Section S99



-Paragraph 1



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Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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