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Note 5 - Intangible Assets (Details Textual) - USD ($) |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 01, 2017 | May 28, 2017 | May 29, 2016 | May 29, 2015
Goodwill |  | $ 54,779,000 | $ 49,620,000 | [1] |
Goodwill, Impaired, Accumulated Impairment Loss |  | 38,800,000 | 38,800,000 |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Two |  | 949,000 |  |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Three |  | 949,000 |  |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Four |  | 949,000 |  |  |
Finite-Lived Intangible Assets, Amortization Expense, Year Five |  | 949,000 |  |  |
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months |  | 949,000 |  |  |
Lifecore [Member] |  |  |  |  |
Finite-Lived Customer Relationships, Gross |  | 3,700,000 |  |  |
Apio [Member] |  |  |  |  |
Finite-Lived Customer Relationships, Gross |  | 7,500,000 |  |  |
O Olive [Member] |  |  |  |  |
Goodwill | $ 5,200,000 |  |  |  |
Finite-Lived Customer Relationships, Gross |  | 700,000 |  |  |
Finite-Lived Intangible Asset, Useful Life | 11 years |  |  |  |
Trade Names [Member] |  |  |  |  |
Finite-Lived Intangible Assets, Accumulated Amortization |  | 872,000 | 872,000 |  |
Customer Relationships [Member] |  |  |  |  |
Finite-Lived Intangible Assets, Accumulated Amortization |  | $ 5,100,000 | 4,200,000 |  |
Customer Relationships [Member] | Lifecore [Member] |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  | 12 years |  |  |
Customer Relationships [Member] | Apio [Member] |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  | 13 years |  |  |
Customer Relationships [Member] | O Olive [Member] |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  | 11 years |  |  |
Food Products Technology [Member] |  |  |  |  |
Goodwill |  | $ 35,500,000 | 35,700,000 |  | $ 35,700,000
Biomaterials [Member] |  |  |  |  |
Goodwill |  | 13,900,000 |  |  |
Food Export [Member] |  |  |  |  |
Goodwill |  | 269,000 |  |  |
Other Segments [Member] |  |  |  |  |
Goodwill |  | $ 5,200,000 | 4,600,000 |  | 4,600,000
HA Based Biomaterials [Member] |  |  |  |  |
Goodwill |  |  | $ 13,900,000 |  | $ 13,900,000
[1] | Derived from audited financial statements. See Note 1 - Organization, Basis of Presentation, and Summary of Significant Accounting Policies for discussion of accounting guidance adopted during the period.

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