Note 8 - Income Taxes - Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
May 28, 2017	May 29, 2016	May 31, 2015
Provision at U.S. statutory rate of 35%	$ 5,224	$ (6,666)	$ 7,451
State income taxes, net of federal benefit	325	(504)	566
Change in valuation allowance	85	6	353
Tax credits	(834)	(156)	(375)
Stock-based compensation	(365)	173	142
Domestic manufacturing deduction	(243)	(307)	(369)
Other	143	50	(22)
Income tax expense (benefit)	$ 4,335	$ (7,404)	$ 7,746

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

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