INCOME TAXES: (Details 2) - USD ($) $ in Thousands	12 Months Ended
Apr. 30, 2017	Apr. 30, 2016
Computed tax provision (benefit) at statutory rate	$ 333	$ (5,248)
Increase (reduction) in tax resulting from:
State income taxes, net of federal income tax effect	473	(93)
Meals and entertainment	4	3
Deferred tax rate changes and other	187	127
Actual tax provision (benefit)	$ 997	$ (5,211)

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to increase (decrease) in the valuation allowance for deferred tax assets.

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

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