INCOME TAXES (Details 3) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Apr. 30, 2013	Apr. 30, 2012
Gross unrecognized tax benefits at beginning of year	$ 1,741	$ 2,384
Additions based on tax positions related to current year	0	0
Additions based on tax positions of prior years	0	0
Reductions based on tax positions of prior years	(217)	(302)
Reductions based on the lapse of the applicable statute of limitations	(8)	(341)
Gross unrecognized tax benefits at end of year	$ 1,516	$ 1,741