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Note 1 - Organization, Basis of Presentation, and Summary of Significant Accounting Policies (Details Textual) - USD ($) |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Jul. 15, 2014 | Jul. 31, 2018 | Nov. 30, 2017 | Apr. 30, 2017 | Feb. 26, 2017 | Oct. 29, 2014 | Feb. 15, 2011 | Feb. 26, 2017 | Nov. 27, 2016 | Aug. 28, 2016 | Feb. 26, 2017 | Feb. 28, 2016 | [1] | May 29, 2016 | May 30, 2016
Number of Proprietary Platforms |  |  |  |  |  | 2 |  |  | 2 |  |  | 2 |  |  |
Debt Issuance Costs, Current, Net |  |  |  |  |  | $ 60,000 |  |  | $ 60,000 |  |  | $ 60,000 |  |  |
Debt Issuance Costs, Noncurrent, Net |  |  |  |  |  | 216,000 |  |  | 216,000 |  |  | 216,000 |  |  |
Loss Contingency, Loss in Period |  |  |  |  |  |  |  |  | 2,100,000 |  |  | 2,600,000 |  |  |
Payments of Debt Extinguishment Costs |  |  |  |  |  |  |  |  |  | $ 233,000 |  | 233,000 |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption | [2] |  |  |  |  | $ 623,000 |  |  | $ 623,000 |  |  | 623,000 |  |  |
Reclassification of Debt Issuance Costs from Assets to Reduction in Liabilities [Member] | May 29, 2016 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Prior Period Reclassification Adjustment |  |  |  |  |  |  |  |  |  |  | $ 817,000 |  |  |  |
Reclassification of Debt Issuance Costs from Other Current Assets to Reduction in Current Portion of Long-term Debt [Member] | May 29, 2016 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Prior Period Reclassification Adjustment |  |  |  |  |  |  |  |  |  |  | 175,000 |  |  |  |
Reclassification of Debt Issuance Costs from Other Noncurrent Assets to Reduction in Long-term Debt [Member] | May 29, 2016 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Prior Period Reclassification Adjustment |  |  |  |  |  |  |  |  |  |  | $ 642,000 |  |  |  |
Reclassifiction of Stock-based Compensation Excess Tax Benefits from Financing Activities to Operating Activities [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Prior Period Reclassification Adjustment |  |  |  |  |  |  |  |  |  |  |  | $ 90,000 |  |  |
Sales Revenue, Goods, Net [Member] | Product Concentration Risk [Member] | Ophthalmic [Member] | HA Based Biomaterials [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration Risk, Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  | 55.00% |
Sales Revenue, Goods, Net [Member] | Customer Concentration Risk [Member] | Orthopedic [Member] | HA Based Biomaterials [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration Risk, Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  | 20.00% |
Sales Revenue, Goods, Net [Member] | Customer Concentration Risk [Member] | Other/Non-HA [Member] | HA Based Biomaterials [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Concentration Risk, Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  | 25.00% |
Windset [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment Ownership Percentage |  |  |  |  |  | 26.90% |  |  | 26.90% |  |  | 26.90% |  |  |
Customer Relationships [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  |  |  |  |  |  |  |  |  |  | 12 years |  |  |
Customer Relationships [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life |  |  |  |  |  |  |  |  |  |  |  | 13 years |  |  |
Retained Earnings [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption | [2] |  |  |  |  | $ 423,000 |  |  | $ 423,000 |  |  | $ 423,000 |  |  |
Retained Earnings [Member] | Adjustment for Unrecognized Excess Tax Benefits [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 549,000
Retained Earnings [Member] | Adjustment for Forfeitures Treatment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (126,000)
Additional Paid-in Capital [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption | [2] |  |  |  |  | 200,000 |  |  | 200,000 |  |  | 200,000 |  |  |
Additional Paid-in Capital [Member] | Adjustment for Forfeitures Treatment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 200,000
Windset [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment Ownership Percentage |  | 26.90% |  |  |  |  |  |  |  |  |  |  |  |  |
Apio [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated Litigation Liability |  |  |  |  |  | 1,300,000 |  |  | $ 1,300,000 |  |  | $ 1,300,000 |  |  |
Apio [Member] | Civil and Administrative Actions [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for Legal Settlements |  |  |  |  |  | $ 155,000 |  |  |  |  |  |  |  |  |
Apio [Member] | Windset [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Investments |  | $ 11,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Investment Ownership Percentage |  |  |  |  |  | 60.00% |  |  | 60.00% |  |  | 60.00% |  |  |
Apio [Member] | Windset [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment In Non Public Company Shares |  | 68 |  |  |  |  |  | 201 |  |  |  |  |  |  |
Payments to Acquire Investments |  |  |  |  |  |  |  | $ 201 |  |  |  |  |  |  |
Apio [Member] | Windset [Member] | Senior B Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment In Non Public Company Shares |  |  |  |  |  |  | 70,000 | 150,000 |  |  |  |  |  |  |
Payments to Acquire Investments |  |  |  |  |  |  | $ 7,000,000 | $ 15,000,000 |  |  |  |  |  |  |
Apio [Member] | Windset [Member] | Junior Preferred Shares [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investment In Non Public Company Shares |  | 51,211 |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Investments |  | $ 11,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
The Reporting Entity and Labor Contractor [Member] | Civil and Administrative Actions [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for Legal Settlements |  |  |  |  |  | $ 310,000 |  |  |  |  |  |  |  |  |
The Reporting Entity and Labor Contractor [Member] | Civil and Administrative Actions [Member] | Scenario, Forecast [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for Legal Settlements |  |  | $ 1,800,000 | $ 1,800,000 | $ 2,400,000 |  |  |  |  |  |  |  |  |  |
Prepaid Expenses and Other Current Assets [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Issuance Costs, Line of Credit Arrangements, Net |  |  |  |  |  | 120,000 |  |  | $ 120,000 |  |  | $ 120,000 |  |  |
Other Assets [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Issuance Costs, Line of Credit Arrangements, Net |  |  |  |  |  | 431,000 |  |  | 431,000 |  |  | 431,000 |  |  |
Other Accrued Liabilities [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated Litigation Liability |  |  |  |  |  | $ 3,200,000 |  |  | $ 3,200,000 |  |  | $ 3,200,000 |  |  |
Deferred Taxes [Member] | Adjustment for Forfeitures Treatment [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cumulative Effect of New Accounting Principle in Period of Adoption |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (74,000)
[1] | See Note 1 - Organization, Basis of Presentation, and Summary of Significant Accounting Policies for a discussion of accounting principles adopted during the period.
[2] | See Note 1 - Organization, Basis of Presentation, and Summary of Significant Accounting Policies for a discussion of accounting guidance adopted during the period.

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