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Investments (Tables)

3 Months Ended

Aug. 31, 2012

Investments [Abstract]

Summary of investments

		Gross Amortized Costs				Gross Unrealized Gains				Fair Value
		(Dollars in thousands)
August 31, 2012
U. S. Treasury Bills		$	15,998			$	3			$	16,001
May 31, 2012
U. S. Treasury Bills		$	16,998			$	5			$	17,003

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- Definition

Tabular disclosure of all investments in certain debt and equity securities for which the entity has the positive intent and ability to hold until maturity.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 137

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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