Income Taxes (Summary Of Income (Loss) Before Income Taxes And Provision (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2015	Apr. 30, 2014
Income Taxes [Abstract]
Domestic	$ (1,531)	$ (1,251)
Foreign	(37)	26
Loss before income taxes	(1,568)	(1,225)
Current: Federal and state income taxes	98	77
Current: Foreign taxes	(66)	114
Total current	32	191
Deferred: Federal and state income taxes	118	$ 142
Deferred: Foreign taxes	(32)
Total deferred	86	$ 142
Provision for income taxes	$ 118	$ 333