STOCKHOLDERS' EQUITY (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2012
STOCKHOLDERS' EQUITY [Abstract]
Shares issued for 401k plan (in shares)	1,873,919	1,476,259	713,302
Value of shares issued for 401k plan	$ 244	$ 281	$ 278
Shares issued for marketing and consulting services (in shares)	0	238,750
Value of shares issued for marketing and consulting services		$ 90