INCOME TAXES (DEFERRED TAX ASSETS BALANCE SHEET PRESENTATION) (Details) - USD ($)	Apr. 30, 2015	Apr. 30, 2014
INCOME TAXES
Current deferred income tax asset	$ 171,000	$ 177,000
Noncurrent deferred income tax asset	665,000	808,000
Net deferred income tax assets	836,000	$ 985,000
Accrued interest or penalties related to uncertain tax positions	0
Expected change in the amount of unrecognized tax benefit, accrued interest or penalties within the next twelve months	$ 0