1. ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 4) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	May 31, 2016	Feb. 29, 2016	Nov. 30, 2015	Aug. 31, 2015	May 31, 2015	Feb. 28, 2015	Nov. 30, 2014	Aug. 31, 2014	May 31, 2016	May 31, 2015	May 31, 2014
Organization And Summary Of Significant Accounting Policies Details 4
Numerator: Net (loss) income	$ (3,056)	$ (2,975)	$ (1,048)	$ 294	$ (1,900)	$ (1,726)	$ (2,114)	$ (907)	$ (6,785)	$ (6,647)	$ 422
Denominator for basic net (loss) income per share: Weighted average shares outstanding									13,091	12,047	10,877
Shares used in basic net (loss) income per share calculation									13,091	12,047	10,877
Effect of dilutive securities									0	0	1,012
Denominator for diluted net (loss) income per share									13,091	12,047	11,889
Basic net (loss) income per share									$ (.52)	$ (.55)	$ .04
Diluted net (loss) income per share									$ (.52)	$ (.55)	$ .04