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Note 7 - Debt (Details) - Long-term Debt (USD $) In Thousands, unless otherwise specified	Aug. 31, 2014	May 25, 2014
Debt Instrument [Line Items]
Debt balance	$ 40,031	$ 34,372
Less current portion	(6,980)	(6,055)	[1]
Long-term portion	33,051	28,317	[1]
Real Estate Loan [Member]
Debt Instrument [Line Items]
Debt balance	15,900	16,137
Capital Equipment Loan 1 [Member]
Debt Instrument [Line Items]
Debt balance	9,006	9,430
Capital Equipment Loan 2 [Member]
Debt Instrument [Line Items]
Debt balance	7,070
Term Loan [Member]
Debt Instrument [Line Items]
Debt balance	5,250	6,000
Industrial Revenue Bonds [Member]
Debt Instrument [Line Items]
Debt balance	$ 2,805	$ 2,805
[1] Derived from audited financial statements.

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- Definition

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.

+ References

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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-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

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-Paragraph 1

-Subparagraph (SX 210.5-02.22)

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Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19,20)

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+ References

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