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Note 14 - Business Segment Reporting (Tables) | 9 Months Ended
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Feb. 24, 2013
Schedule of Revenue from External Customers Attributed to Foreign Countries by Geographic Area [Table Text Block] |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | February 24, 2013 |  |  | February 26, 2012 |  |  | February 24, 2013 |  |  | February 26, 2012 |
Taiwan |  | $ | 2.9 |  |  | $ | 2.0 |  |  | $ | 28.7 |  |  | $ | 20.9 |
Canada |  | $ | 7.4 |  |  | $ | 5.4 |  |  | $ | 19.7 |  |  | $ | 15.2 |
Indonesia |  | $ | 4.1 |  |  | $ | 5.4 |  |  | $ | 17.6 |  |  | $ | 19.3 |
Belgium |  | $ | 10.6 |  |  | $ | 6.0 |  |  | $ | 15.2 |  |  | $ | 14.1 |
Japan |  | $ | 1.5 |  |  | $ | 1.6 |  |  | $ | 7.4 |  |  | $ | 7.8 |
All Other Countries |  | $ | 7.8 |  |  | $ | 4.5 |  |  | $ | 20.2 |  |  | $ | 14.5 |
Schedule of Segment Reporting Information, by Segment [Table Text Block] |
Three Months Ended February 24, 2013 |  | Food Products Technology |  |  | Food Export |  |  | HA-based Biomaterials |  |  | Corporate |  |  | TOTAL |
Net sales |  | $ | 86,707 |  |  | $ | 13,381 |  |  | $ | 17,331 |  |  | $ | 448 |  |  | $ | 117,867 |
International sales |  | $ | 7,293 |  |  | $ | 13,381 |  |  | $ | 13,579 |  |  | $ | — |  |  | $ | 34,253 |
Gross profit |  | $ | 5,846 |  |  | $ | 1,031 |  |  | $ | 10,243 |  |  | $ | 388 |  |  | $ | 17,508 |
Net income (loss) |  | $ | 338 |  |  | $ | 228 |  |  | $ | 5,687 |  |  | $ | (1,464 | ) |  | $ | 4,789 |
Depreciation and amortization |  | $ | 1,224 |  |  | $ | 1 |  |  | $ | 602 |  |  | $ | 39 |  |  | $ | 1,866 |
Dividend Income |  | $ | 281 |  |  | $ | — |  |  | $ | — |  |  |  | — |  |  | $ | 281 |
Interest income |  | $ | 4 |  |  | $ | — |  |  | $ | 42 |  |  | $ | — |  |  | $ | 46 |
Interest expense |  | $ | 421 |  |  | $ | — |  |  | $ | 66 |  |  | $ | — |  |  | $ | 487 |
Income tax expense |  | $ | 113 |  |  | $ | 76 |  |  | $ | 1,895 |  |  | $ | 670 |  |  | $ | 2,754 |
Three Months Ended February 26, 2012 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  | $ | 56,456 |  |  | $ | 12,388 |  |  | $ | 11,066 |  |  | $ | 154 |  |  | $ | 80,064 |
International sales |  | $ | 5,179 |  |  | $ | 12,159 |  |  | $ | 7,600 |  |  | $ | — |  |  | $ | 24,938 |
Gross profit |  | $ | 5,478 |  |  | $ | 917 |  |  | $ | 6,623 |  |  | $ | 154 |  |  | $ | 13,172 |
Net income (loss) |  | $ | 5,851 |  |  | $ | 339 |  |  | $ | 3,970 |  |  | $ | (5,395 | ) |  | $ | 4,765 |
Depreciation and amortization |  | $ | 762 |  |  | $ | 2 |  |  | $ | 572 |  |  | $ | 46 |  |  | $ | 1,382 |
Dividend Income |  | $ | 281 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 281 |
Interest income |  | $ | 12 |  |  | $ | — |  |  | $ | 43 |  |  | $ | 8 |  |  | $ | 63 |
Interest expense |  | $ | — |  |  | $ | — |  |  | $ | 153 |  |  | $ | — |  |  | $ | 153 |
Income tax expense |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 2,920 |  |  | $ | 2,920 |
Nine Months Ended February 24, 2013 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  | $ | 233,931 |  |  | $ | 66,854 |  |  | $ | 33,043 |  |  | $ | 767 |  |  | $ | 334,595 |
International sales |  | $ | 19,475 |  |  | $ | 66,747 |  |  | $ | 22,603 |  |  | $ | — |  |  | $ | 108,825 |
Gross profit |  | $ | 28,891 |  |  | $ | 4,407 |  |  | $ | 15,725 |  |  | $ | 707 |  |  | $ | 49,730 |
Net income (loss) |  | $ | 15,466 |  |  | $ | 1,403 |  |  | $ | 5,713 |  |  | $ | (4,514 | ) |  | $ | 18,068 |
Depreciation and amortization |  | $ | 3,634 |  |  | $ | 3 |  |  | $ | 1,777 |  |  | $ | 113 |  |  | $ | 5,527 |
Dividend Income |  | $ | 844 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 844 |
Interest income |  | $ | 12 |  |  | $ | — |  |  | $ | 92 |  |  | $ | — |  |  | $ | 104 |
Interest expense |  | $ | 1,303 |  |  | $ | — |  |  | $ | 223 |  |  | $ | — |  |  | $ | 1,526 |
Income tax expense |  | $ | 3,846 |  |  | $ | 467 |  |  | $ | 1,904 |  |  | $ | 2,021 |  |  | $ | 8,238 |
Nine Months Ended February 26, 2012 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  | $ | 146,512 |  |  | $ | 57,972 |  |  | $ | 27,422 |  |  | $ | 3,029 |  |  | $ | 234,935 |
International sales |  | $ | 14,890 |  |  | $ | 57,619 |  |  | $ | 19,250 |  |  | $ | — |  |  | $ | 91,759 |
Gross profit |  | $ | 16,068 |  |  | $ | 3,733 |  |  | $ | 14,602 |  |  | $ | 3,029 |  |  | $ | 37,432 |
Net income (loss) |  | $ | 11,846 |  |  | $ | 1,729 |  |  | $ | 7,270 |  |  | $ | (10,928 | ) |  | $ | 9,917 |
Depreciation and amortization |  | $ | 2,313 |  |  | $ | 6 |  |  | $ | 1,655 |  |  | $ | 137 |  |  | $ | 4,111 |
Dividend Income |  | $ | 844 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 844 |
Interest income |  | $ | 42 |  |  | $ | — |  |  | $ | 148 |  |  | $ | 29 |  |  | $ | 219 |
Interest expense |  | $ | — |  |  | $ | — |  |  | $ | 492 |  |  | $ | — |  |  | $ | 492 |
Income tax expense |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 6,079 |  |  | $ | 6,079 |

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- Definition Tabular disclosure of the names of foreign countries from which revenue is material and the amount of revenue from external customers attributed to those countries. An entity may also provide subtotals of geographic information about groups of countries. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 38 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599 + Details
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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8736-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8813-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 27, 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8906-108599 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8721-108599 + Details
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