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Note 7 - Intangible Assets (Tables) | 12 Months Ended
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May 25, 2014
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill [Table Text Block] |
|  | Food Products Technology |  |  | Corporate |  |  | Hyaluronan- based Biomaterials |  |  | Total |
Balance as of May 29, 2011 |  |  | 22,581 |  |  |  | — |  |  |  | 13,881 |  |  |  | 36,462 |
Goodwill acquired during the period |  |  | 13,158 |  |  |  | — |  |  |  | — |  |  |  | 13,158 |
Balance as of May 27, 2012 |  |  | 35,739 |  |  |  | — |  |  |  | 13,881 |  |  |  | 49,620 |
Balance as of May 26, 2013 |  | $ | 35,739 |  |  | $ | — |  |  | $ | 13,881 |  |  | $ | 49,620 |
Balance as of May 25, 2014 |  | $ | 35,739 |  |  | $ | — |  |  | $ | 13,881 |  |  | $ | 49,620 |
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
|  |  | Trademarks & Trade names |  |  | Customer Relationships |  |  | Total |
Balance as of May 29, 2011 |  |  | 12,428 |  |  |  | 3,366 |  |  |  | 15,794 |
Acquired during the period |  |  | 36,000 |  |  |  | 7,500 |  |  |  | 43,500 |
Amortization expense |  |  | — |  |  |  | (309 | ) |  |  | (309 | )
Balance as of May 27, 2012 |  |  | 48,428 |  |  |  | 10,557 |  |  |  | 58,985 |
Amortization expense |  |  | — |  |  |  | (951 | ) |  |  | (951 | )
Balance as of May 26, 2013 |  | $ | 48,428 |  |  | $ | 9,606 |  |  | $ | 58,034 |
Amortization expense |  |  | — |  |  |  | (886 | ) |  |  | (886 | )
Balance as of May 25, 2014 |  | $ | 48,428 |  |  | $ | 8,720 |  |  | $ | 57,148 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: 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=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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