Note 1 - Organization, Basis of Presentation, and Summary of Significant Accounting Policies (Details Textual) - USD ($)			1 Months Ended		3 Months Ended		6 Months Ended			12 Months Ended
		Jul. 15, 2014	Oct. 29, 2014	Feb. 15, 2011	Nov. 27, 2016	Aug. 28, 2016	Nov. 27, 2016	Nov. 29, 2015	[1]	May 29, 2016	May 30, 2016
Number of Proprietary Platforms					2		2
Debt Issuance Costs, Current, Net					$ 60,000		$ 60,000
Debt Issuance Costs, Noncurrent, Net					229,000		229,000
Loss Contingency, Loss in Period					$ 500,000
Loss Contingency Per Diluted Share					$ 0.01
Payments of Debt Extinguishment Costs					$ 233,000		233,000
Cumulative Effect of New Accounting Principle in Period of Adoption	[2]				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] | Six Months Ended November 29th, 2015 [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%
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
Retained Earnings [Member] | Adjustment for Unrecoganized 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
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] | Windset [Member]
Payments to Acquire Investments		$ 11,000,000
Investment Ownership Percentage					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
Prepaid Expenses and Other Current Assets [Member]
Debt Issuance Costs, Gross					$ 120,000		$ 120,000
Other Assets [Member]
Debt Issuance Costs, Gross					$ 459,000		$ 459,000
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.