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Note 14 - Business Segment Reporting (Details) - Operations by Business Segment (USD $) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Feb. 23, 2014 | Feb. 24, 2013 | Feb. 23, 2014 | Feb. 23, 2014 | Feb. 24, 2013
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales | $ 126,379,000 | $ 117,867,000 | $ 355,884,000 |  | $ 334,595,000
International sales | 33,302,000 | 34,253,000 | 105,197,000 |  | 108,825,000
Gross profit | 20,155,000 | 17,508,000 | 46,421,000 |  | 49,730,000
Net income (loss) | 6,400,000 | 4,789,000 | 14,603,000 |  | 18,068,000
Depreciation and amortization | 1,577,000 | 1,866,000 | 5,364,000 |  | 5,527,000
Dividend Income | 281,000 | 281,000 | 844,000 | 844,000 | 844,000
Interest income | 78,000 | 46,000 | 183,000 |  | 104,000
Interest expense | 390,000 | 487,000 | 1,257,000 |  | 1,526,000
Income tax expense | 3,679,000 | 2,754,000 | 8,028,000 |  | 8,238,000
Food Products Technology [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales | 95,431,000 | 86,707,000 | 262,957,000 |  | 233,931,000
International sales | 12,013,000 | 7,293,000 | 31,836,000 |  | 19,475,000
Gross profit | 7,282,000 | 5,846,000 | 24,383,000 |  | 28,891,000
Net income (loss) | 131,000 | 338,000 | 9,402,000 |  | 15,466,000
Depreciation and amortization | 1,040,000 | 1,224,000 | 3,566,000 |  | 3,634,000
Dividend Income | 281,000 | 281,000 | 844,000 |  | 844,000
Interest income | 3,000 | 4,000 | 8,000 |  | 12,000
Interest expense | 332,000 | 421,000 | 1,064,000 |  | 1,303,000
Income tax expense | 468,000 | 113,000 | 2,434,000 |  | 3,846,000
Food Export [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales | 10,676,000 | 13,381,000 | 55,106,000 |  | 66,854,000
International sales | 10,676,000 | 13,381,000 | 55,005,000 |  | 66,747,000
Gross profit | 990,000 | 1,031,000 | 4,015,000 |  | 4,407,000
Net income (loss) | 206,000 | 228,000 | 1,209,000 |  | 1,403,000
Depreciation and amortization | 1,000 | 1,000 | 3,000 |  | 3,000
Income tax expense | 58,000 | 76,000 | 341,000 |  | 467,000
HA-based Biomaterials [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales | 20,176,000 | 17,331,000 | 37,539,000 |  | 33,043,000
International sales | 10,613,000 | 13,579,000 | 18,356,000 |  | 22,603,000
Gross profit | 11,787,000 | 10,243,000 | 17,800,000 |  | 15,725,000
Net income (loss) | 7,192,000 | 5,687,000 | 7,427,000 |  | 5,713,000
Depreciation and amortization | 504,000 | 602,000 | 1,692,000 |  | 1,777,000
Interest income | 74,000 | 42,000 | 174,000 |  | 92,000
Interest expense | 58,000 | 66,000 | 193,000 |  | 223,000
Income tax expense | 2,028,000 | 1,895,000 | 2,094,000 |  | 1,904,000
Corporate Segment [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Net sales | 96,000 | 448,000 | 282,000 |  | 767,000
Gross profit | 96,000 | 388,000 | 223,000 |  | 707,000
Net income (loss) | (1,129,000) | (1,464,000) | (3,435,000) |  | (4,514,000)
Depreciation and amortization | 32,000 | 39,000 | 103,000 |  | 113,000
Interest income | 1,000 |  | 1,000 |  |
Income tax expense | $ 1,125,000 | $ 670,000 | $ 3,159,000 |  | $ 2,021,000

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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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