INCOME TAXES: (Details 2) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2015	Apr. 30, 2014
Computed tax provision (benefit) at statutory rate	$ (2,000)	$ (470)
Increase (reduction) in tax resulting from:
State income taxes, net of federal income tax effect	(45)	(186)
Expiration of state NOLs	0	181
Meals and entertainment	11	16
Other	(98)	(108)
Actual tax provision (benefit)	$ (2,132)	$ (567)