3. EARNINGS PER SHARE (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Nov. 30, 2012	Nov. 30, 2011	Nov. 30, 2012	Nov. 30, 2011
Earnings Per Share Details
Net loss	$ (811)	$ (1,373)	$ (1,107)	$ (1,249)
Denominator for basic net loss per share: Weighted average shares outstanding	9,300	8,980	9,233	8,956
Shares used in basic net loss per share calculation	9,300	8,980	9,233	8,956
Effect of dilutive securities	0	0	0	0
Denominator for diluted net loss per share	9,300	8,980	9,233	8,956
Basic Net loss per share	$ (0.09)	$ (0.15)	$ (0.12)	$ (0.14)
Diluted Net loss per share	$ (0.09)	$ (0.15)	$ (0.12)	$ (0.14)