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Note 1 - Organization, Basis of Presentation, and Summary of Significant Accounting Policies (Details Textual) |  |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | ---
Jul. 03, 2017 USD ($) | May 05, 2017 USD ($) | Dec. 27, 2016 USD ($) | Jul. 31, 2018 USD ($) | Nov. 30, 2017 USD ($) | Aug. 27, 2017 USD ($) | Aug. 28, 2016 USD ($) | May 28, 2017 USD ($) | Jul. 15, 2014
Number of Proprietary Platforms |  |  |  |  |  | 2 |  |  |
Debt Issuance Costs, Current, Net |  |  |  |  |  | $ 60,000 |  | $ 60,000 |
Debt Issuance Costs, Noncurrent, Net |  |  |  |  |  | 186,000 |  | 201,000 |
Legal Actions Against Apio [Member] |  |  |  |  |  |  |  |  |
Loss Contingency Accrual |  |  |  |  |  | $ 2,000,000 |  | $ 3,200,000 |
Unfair Labor Practice Claims [Member] |  |  |  |  |  |  |  |  |
Litigation Settlement, Amount Awarded to Other Party |  |  | $ 310,000 |  |  |  |  |  |
Discrimination and Wrongful Termination and Wage and Hour Claims [Member] |  |  |  |  |  |  |  |  |
Payments for Legal Settlements | $ 2,400,000 |  |  |  |  |  |  |  |
Litigation Settlement, Amount Awarded to Other Party |  | $ 6,000,000 |  |  |  |  |  |  |
Discrimination and Wrongful Termination and Wage and Hour Claims [Member] | Scenario, Forecast [Member] |  |  |  |  |  |  |  |  |
Litigation Settlement, Amount Awarded to Other Party |  |  |  | $ 1,800,000 | $ 1,800,000 |  |  |  |
Apio [Member] | Legal Actions Against Apio [Member] |  |  |  |  |  |  |  |  |
Loss Contingency, Number of Plaintiffs |  |  |  |  |  | 100 |  |  |
Apio [Member] | Unfair Labor Practice Claims [Member] |  |  |  |  |  |  |  |  |
Litigation Settlement, Amount Awarded to Other Party |  |  | $ 155,000 |  |  |  |  |  |
HA Based Biomaterials [Member] |  |  |  |  |  |  |  |  |
Number of Product Segments |  |  |  |  |  | 3 |  |  |
HA Based Biomaterials [Member] | Customer Concentration Risk [Member] | Sales Revenue, Goods, Net [Member] | Ophthalmic [Member] |  |  |  |  |  |  |  |  |
Concentration Risk, Percentage |  |  |  |  |  |  |  | 65.00% |
HA Based Biomaterials [Member] | Customer Concentration Risk [Member] | Sales Revenue, Goods, Net [Member] | Orthopedic [Member] |  |  |  |  |  |  |  |  |
Concentration Risk, Percentage |  |  |  |  |  |  |  | 15.00% |
HA Based Biomaterials [Member] | Customer Concentration Risk [Member] | Sales Revenue, Goods, Net [Member] | Other/Non-HA [Member] |  |  |  |  |  |  |  |  |
Concentration Risk, Percentage |  |  |  |  |  |  |  | 20.00% |
Windset [Member] |  |  |  |  |  |  |  |  |
Investment Ownership Percentage |  |  |  |  |  | 26.90% |  |  | 26.90%
Apio Cooling, LP [Member] |  |  |  |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  |  |  |  | 60.00% |  |  |
Pacific Harvest [Member] | Discrimination and Wrongful Termination and Wage and Hour Claims [Member] |  |  |  |  |  |  |  |  |
Litigation Settlement, Amount to be Reimbursed | $ 1,200,000 |  |  |  |  |  |  |  |
Pacific Harvest [Member] | Discrimination and Wrongful Termination and Wage and Hour Claims [Member] | Scenario, Forecast [Member] |  |  |  |  |  |  |  |  |
Litigation Settlement, Amount to be Reimbursed |  |  |  |  | $ 1,800,000 |  |  |  |
Customer Relationships [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  |  |  |  | 11 years |  |  |
Customer Relationships [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  |  |  |  | 13 years |  |  |
Prepaid Expenses and Other Current Assets [Member] |  |  |  |  |  |  |  |  |
Debt Issuance Costs, Line of Credit Arrangements, Net |  |  |  |  |  | $ 120,000 |  | $ 120,000 |
Other Assets [Member] |  |  |  |  |  |  |  |  |
Debt Issuance Costs, Line of Credit Arrangements, Net |  |  |  |  |  | 367,000 |  | 399,000 |
Windset [Member] |  |  |  |  |  |  |  |  |
Accounts Receivable, Related Parties, Current |  |  |  |  |  | 195,000 |  | $ 388,000 |
Windset [Member] | Cost of Sales [Member] |  |  |  |  |  |  |  |  |
Revenue from Related Parties |  |  |  |  |  | $ 104,000 | $ 118,000 |  |

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