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

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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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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Tax year that remains open to examination under enacted tax laws, in CCYY format.

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Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

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The total amount of unrecognized tax benefits that, if recognized, would affect the effective tax rate.

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Note 5 - Income Taxes (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
Note 5 - Income Taxes (Details Textual) - USD ($)	Nov. 29, 2015	Nov. 30, 2014	Nov. 29, 2015	Nov. 30, 2014	May. 31, 2015
Domestic Tax Authority [Member] \| Earliest Tax Year [Member]
Open Tax Year			1997
State and Local Jurisdiction [Member] \| Earliest Tax Year [Member]
Open Tax Year			1998
Effective Income Tax Rate Reconciliation, Percent			36.00%	36.00%
Income Tax Expense (Benefit)	$ 1,069,000	$ 1,785,000	$ 2,760,000	$ 3,086,000
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			35.00%
Unrecognized Tax Benefits	864,000		$ 864,000		$ 1,000,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	$ 720,000		$ 720,000		$ 800,000