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Note 14 - Business Segment Reporting (Details) - Operations by Business Segment (USD $) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Nov. 24, 2013 | Nov. 25, 2012 | Nov. 24, 2013 | Nov. 25, 2012
Segment Reporting Information [Line Items] |  |  |  |
Gross profit | $ 13,734,000 | $ 18,459,000 | $ 26,266,000 | $ 32,222,000
Net income (loss) | 3,451,000 | 8,913,000 | 8,203,000 | 13,279,000
Dividend Income | 281,000 | 281,000 | 563,000 | 563,000
Interest income | 46,000 | 33,000 | 105,000 | 58,000
Interest expense | 436,000 | 498,000 | 867,000 | 1,039,000
Income tax expense | 1,900,000 |  | 4,300,000 |
Food Products Technology [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 88,090,000 | 78,592,000 | 167,526,000 | 147,223,000
International sales | 10,345,000 | 5,959,000 | 19,823,000 | 12,182,000
Gross profit | 8,220,000 | 13,102,000 | 17,101,000 | 23,045,000
Net income (loss) | 2,005,000 | 9,212,000 | 9,271,000 | 15,128,000
Depreciation and amortization | 1,304,000 | 1,174,000 | 2,526,000 | 2,410,000
Dividend Income | 281,000 | 281,000 | 563,000 | 563,000
Interest income | 2,000 | 7,000 | 5,000 | 8,000
Interest expense | 356,000 | 427,000 | 732,000 | 882,000
Income tax expense | 1,461,000 | 1,761,000 | 1,966,000 | 3,733,000
Food Export [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 23,031,000 | 28,115,000 | 44,430,000 | 53,473,000
International sales | 22,940,000 | 28,055,000 | 44,329,000 | 53,366,000
Gross profit | 1,820,000 | 2,034,000 | 3,025,000 | 3,376,000
Net income (loss) | 727,000 | 866,000 | 1,003,000 | 1,175,000
Depreciation and amortization | 1,000 | 1,000 | 2,000 | 2,000
Income tax expense | 205,000 | 288,000 | 283,000 | 391,000
HA-based Biomaterials [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 8,777,000 | 7,740,000 | 17,363,000 | 15,713,000
International sales | 3,366,000 | 4,222,000 | 7,743,000 | 9,024,000
Gross profit | 3,625,000 | 3,116,000 | 6,013,000 | 5,482,000
Net income (loss) | 611,000 | 338,000 | 235,000 | 26,000
Depreciation and amortization | 604,000 | 592,000 | 1,188,000 | 1,175,000
Interest income | 44,000 | 26,000 | 100,000 | 50,000
Interest expense | 80,000 | 71,000 | 135,000 | 157,000
Income tax expense | 172,000 | 113,000 | 66,000 | 9,000
Corporate Segment [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 128,000 | 207,000 | 186,000 | 319,000
Gross profit | 69,000 | 207,000 | 127,000 | 319,000
Net income (loss) | 108,000 | (1,503,000) | (2,306,000) | (3,050,000)
Depreciation and amortization | 36,000 | 38,000 | 71,000 | 74,000
Income tax expense | 36,000 | 758,000 | 2,034,000 | 1,351,000
Total [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net sales | 120,026,000 | 114,654,000 | 229,505,000 | 216,728,000
International sales | 36,651,000 | 38,236,000 | 71,895,000 | 74,572,000
Gross profit | 13,734,000 | 18,459,000 | 26,266,000 | 32,222,000
Net income (loss) | 3,451,000 | 8,913,000 | 8,203,000 | 13,279,000
Depreciation and amortization | 1,945,000 | 1,805,000 | 3,787,000 | 3,661,000
Dividend Income | 281,000 | 281,000 | 563,000 | 563,000
Interest income | 46,000 | 33,000 | 105,000 | 58,000
Interest expense | 436,000 | 498,000 | 867,000 | 1,039,000
Income tax expense | $ 1,874,000 | $ 2,920,000 | $ 4,349,000 | $ 5,484,000

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- 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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