SHAREHOLDERS' EQUITY (Details) - Company's stock options outstanding (USD $)	12 Months Ended
	May 31, 2013
Range of Exercise Price $0.30 - $0.50 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
NUMBER OUTSTANDING	651,500
AVERAGE REMAINING CONTRACTUAL LIFE IN YEARS	3 years 51 days
WEIGHTED AVERAGE EXERCISE PRICE, OPTIONS OUTSTANDING (in Dollars per share)	$ 0.42
NUMBER EXERCISABLE	253,250
WEIGHTED AVERAGE EXERCISE PRICE, OPTIONS EXERCISABLE (in Dollars per share)	$ 0.42
Range Of Exercise Price $0.51 - $0.75 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
NUMBER OUTSTANDING	195,000
AVERAGE REMAINING CONTRACTUAL LIFE IN YEARS	3 years 215 days
WEIGHTED AVERAGE EXERCISE PRICE, OPTIONS OUTSTANDING (in Dollars per share)	$ 0.66
NUMBER EXERCISABLE	185,000
WEIGHTED AVERAGE EXERCISE PRICE, OPTIONS EXERCISABLE (in Dollars per share)	$ 0.66