3. EARNINGS PER SHARE (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Feb. 28, 2013	Feb. 29, 2012	Feb. 28, 2013	Feb. 29, 2012
Earnings Per Share Details
Numerator: Net loss	$ (1,458)	$ (1,361)	$ (2,565)	$ (2,611)
Denominator for basic net loss per share: Weighted average shares outstanding	9,363	9,055	9,276	8,989
Shares used in basic net loss per share calculation	9,363	9,055	9,276	8,989
Effect of dilutive securities	0	0	0	0
Denominator for diluted net loss per share	9,363	9,055	9,276	8,989
Basic Net loss per share	$ (0.16)	$ (0.15)	$ (0.28)	$ (0.29)
Diluted Net loss per share	$ (0.16)	$ (0.15)	$ (0.28)	$ (0.29)