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INCOME TAXES (Details Textual) (USD $)	12 Months Ended
INCOME TAXES (Details Textual) (USD $)	May 31, 2013	May 31, 2012
Unrecognized Tax Benefits Resulting in Net Operating Loss Carryforward	$ 17,484,000
Unrecognized Tax Benefits Resulting In Net Operating Loss Carry forward Expiration Term	through 2033
Deferred Tax Assets, Net Operating Loss Carryforwards, Description	The Company may have had greater than 50% change in ownership of certain stock holdings by shareholders of the Company pursuant to Section 382 of the Internal Revenue Code, the net operating losses may be limited as to its utilization on an annual basis.
Deferred Tax Assets, Operating Loss Carryforwards	$ 6,908,000	$ 6,729,000

Amount of an unrecognized tax benefit that is directly related to a position taken in a tax year that results in a net operating loss carryforward. This amount is presented as a reduction of the related deferred tax asset in the balance sheet if that deferred tax asset is not used. This amount is presented separately from the deferred tax asset for a net operating loss carryforward if this unrelated tax benefit is associated with a different tax position.

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