SHAREHOLDERS' EQUITY (Tables)

12 Months Ended

May 31, 2014

Stockholders' Equity Note [Abstract]

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

	NUMBER OF STOCK OPTIONS	PRICE RANGE  PER SHARE	WEIGHTED AVERAGE EXERCISE PRICE
Options outstanding at May 31, 2012	1,004,500	$0.30 - $0.75	$0.46
Options granted	30,000	$0.65 - $0.68	$0.67
Options exercised	(122,375)	$0.30 - $0.73	$0.42
Options canceled or expired	(65,625)	$0.38 - $0.73	$0.52
Options outstanding at May 31, 2013	846,500	$0.38 - $0.75	$0.47
Options granted	178,000	$0.71-$0.84	$0.75
Options exercised	(69,000)	$0.38-$0.60	$0.51
Options canceled or expired	(95,000)	$0.43-$0.84	$0.59
Options outstanding at May 31, 2014	860,500	$0.38-$0.84	$0.51

Schedule of Nonvested Share Activity [Table Text Block]

		STOCK OPTIONS WEIGHTED AVERAGE AVERAGE GRANT DATE FAIR VALUE
	NUMBER OF SHARES
Nonvested shares at May 31, 2013	408,250	$	0.42
Granted	178,000	$	0.75
Vested/Issued	( 162,250)	$	0.42
Forfeited	(14,000)	$	0.43
Nonvested shares at May 31, 2014	410,000	$	0.56

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

RANGE OF EXERCISE PRICES	NUMBER OUTSTANDING 5/31/2014	WEIGHTED AVERAGE REMAINING CONTRACTUAL  LIFE IN YEARS	WEIGHTED AVERAGE EXERCISE PRICE	NUMBER EXERCISABLE AT MAY 31, 2014	WEIGHTED AVERAGE  EXERCISE PRICE
$ 0.30 - $ 0.50	602,500	2.30	$ 0.41	371,500	$ 0.41
$ 0.51 - $ 0.75	211,000	4.58	$ 0.72	77,500	$ 0.75
$ 0.83 - $ 0.84	47,000	3.57	$0.84	--	--