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Effective income tax rates can be reconciled to (Details)	12 Months Ended
	May 31, 2013	May 31, 2012
Effective income tax rates can be reconciled to:
Federal statutory rate	34.00%	34.00%
State	0.00%	0.00%
Foreign.	1.00%	0.00%
Permanent items	0.00%	0.00%
Valuation reserve	(34.00%)	(34.00%)
Effective tax rate	1.00%	0.00%

A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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- Definition

The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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