Note 7 - Income Taxes - Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
Apr. 28, 2018	Apr. 29, 2017	Apr. 30, 2016
Current	$ 55,039	$ 54,422	$ 32,806
Deferred income tax provision (benefit)	676	1,358	(1,299)
Total	$ 55,715	$ 55,780	$ 31,507

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

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