Note 8 - Income Taxes - Provision for Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	May 28, 2017	May 29, 2016		May 31, 2015
Current:
Federal	$ 1,690	$ 2,382		$ 3,480
State	57	(82)		43
Foreign	82	83		71
Total	1,829	2,383		3,594
Deferred:
Federal	2,244	(9,177)		3,789
State	262	(610)		363
Total	2,506	(9,787)	[1]	4,152	[1]
Income tax expense (benefit)	$ 4,335	$ (7,404)		$ 7,746

[1] See Note 1 - Organization, Basis of Presentation, and Summary of Significant Accounting Policies for a discussion of accounting principles adopted during the period.