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Note 14 - Business Segment Reporting (Details)	9 Months Ended
	Feb. 23, 2014	Feb. 24, 2013
Note 14 - Business Segment Reporting (Details) [Line Items]
Number of Operating Segments	3
Customer 1 [Member] | Food Products Technology [Member] | Customer Concentration Risk [Member] | Sales Revenue, Net [Member]
Note 14 - Business Segment Reporting (Details) [Line Items]
Concentration Risk, Percentage	20.00%	14.00%
Customer 2 [Member] | Food Products Technology [Member] | Customer Concentration Risk [Member] | Sales Revenue, Net [Member]
Note 14 - Business Segment Reporting (Details) [Line Items]
Concentration Risk, Percentage		12.00%
Food Products Technology [Member] | Customer Concentration Risk [Member] | Sales Revenue, Net [Member]
Note 14 - Business Segment Reporting (Details) [Line Items]
Entity-Wide Revenue Major Customer Number	2	2
Concentration Risk, Percentage		12.00%
Customer Concentration Risk [Member] | Sales Revenue, Net [Member]
Note 14 - Business Segment Reporting (Details) [Line Items]
Entity-Wide Revenue Major Customer Number	5	5
Concentration Risk, Percentage	43.00%	39.00%

X

- Definition

Entity-wide revenue major customer number.

+ References

No definition available.

+ Details

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 21

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13537-108611



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13531-108611



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 18

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592

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X

- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

No definition available.

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