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Note 14 - Business Segment Reporting (Details) - Operations by Business Segment (USD $) | 3 Months Ended
--- | ---
Aug. 25, 2013 | Aug. 26, 2012
Segment Reporting Information [Line Items] |  |
Gross profit | $ 12,532,000 | $ 13,763,000
Net income (loss) | 4,752,000 | 4,366,000
Dividend Income | 281,000 | 281,000
Interest income | 60,000 | 26,000
Interest expense | 431,000 | 541,000
Income tax expense | 2,500,000 |
Food Products Technology [Member] |  |
Segment Reporting Information [Line Items] |  |
Net sales | 79,436,000 | 68,631,000
International sales | 9,478,000 | 6,223,000
Gross profit | 8,881,000 | 9,942,000
Net income (loss) | 7,266,000 | 5,916,000
Depreciation and amortization | 1,222,000 | 1,236,000
Dividend Income | 281,000 | 281,000
Interest income | 4,000 | 1,000
Interest expense | 376,000 | 455,000
Income tax expense | 505,000 | 1,972,000
Food Export [Member] |  |
Segment Reporting Information [Line Items] |  |
Net sales | 21,398,000 | 25,358,000
International sales | 21,389,000 | 25,311,000
Gross profit | 1,205,000 | 1,343,000
Net income (loss) | 276,000 | 309,000
Depreciation and amortization | 1,000 | 1,000
Income tax expense | 78,000 | 103,000
HA-based Biomaterials [Member] |  |
Segment Reporting Information [Line Items] |  |
Net sales | 8,587,000 | 7,973,000
International sales | 4,377,000 | 4,802,000
Gross profit | 2,388,000 | 2,366,000
Net income (loss) | (376,000) | (312,000)
Depreciation and amortization | 584,000 | 583,000
Interest income | 56,000 | 25,000
Interest expense | 55,000 | 86,000
Income tax expense | (106,000) | (104,000)
Corporate Segment [Member] |  |
Segment Reporting Information [Line Items] |  |
Net sales | 58,000 | 112,000
Gross profit | 58,000 | 112,000
Net income (loss) | (2,414,000) | (1,547,000)
Depreciation and amortization | 35,000 | 36,000
Income tax expense | 1,998,000 | 594,000
Total [Member] |  |
Segment Reporting Information [Line Items] |  |
Net sales | 109,479,000 | 102,074,000
International sales | 35,244,000 | 36,336,000
Gross profit | 12,532,000 | 13,763,000
Net income (loss) | 4,752,000 | 4,366,000
Depreciation and amortization | 1,842,000 | 1,856,000
Dividend Income | 281,000 | 281,000
Interest income | 60,000 | 26,000
Interest expense | 431,000 | 541,000
Income tax expense | $ 2,475,000 | $ 2,565,000

X
- Definition The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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