Note 9 - Debt (Details) - Future Minimum Principal Payments of Debt (USD $) In Thousands, unless otherwise specified	May 25, 2014	May 26, 2013
Note 9 - Debt (Details) - Future Minimum Principal Payments of Debt [Line Items]
FY 2015	$ 6,055
FY 2016	6,181
FY 2017	3,318
FY 2018	3,456
FY 2019	3,599
Thereafter	11,763
Total	34,372	40,305
Real Estate Loan [Member]
Note 9 - Debt (Details) - Future Minimum Principal Payments of Debt [Line Items]
FY 2015	965
FY 2016	1,005
FY 2017	1,046
FY 2018	1,089
FY 2019	1,134
Thereafter	10,898
Total	16,137	17,065
Capital Equipment Loan [Member]
Note 9 - Debt (Details) - Future Minimum Principal Payments of Debt [Line Items]
FY 2015	1,725
FY 2016	1,801
FY 2017	1,882
FY 2018	1,967
FY 2019	2,055
Total	9,430	11,080
Term Loan [Member]
Note 9 - Debt (Details) - Future Minimum Principal Payments of Debt [Line Items]
FY 2015	3,000
FY 2016	3,000
Total	6,000	9,000
Industrial Revenue Bonds [Member]
Note 9 - Debt (Details) - Future Minimum Principal Payments of Debt [Line Items]
FY 2015	365
FY 2016	375
FY 2017	390
FY 2018	400
FY 2019	410
Thereafter	865
Total	$ 2,805	$ 3,160

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Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 7

Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Topic 210

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-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601

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