Note 1 - Organization, Basis of Presentation, and Summary of Significant Accounting Policies (Details Textual) - USD ($)			1 Months Ended		3 Months Ended	12 Months Ended
		Jul. 15, 2014	Oct. 29, 2014	Feb. 15, 2011	Aug. 28, 2016	May 29, 2016	Aug. 30, 2015
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
Apio [Member] | Windset [Member] | Common Stock [Member]
Investment In Non Public Company Shares		68		201
Payments to Acquire Investments				$ 201
Apio [Member] | Windset [Member]
Payments to Acquire Investments		$ 11,000,000
Investment Ownership Percentage					60.00%
Windset [Member]
Investment Ownership Percentage		26.90%
Investments, Fair Value Disclosure					$ 62,700,000	$ 62,700,000
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)
Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	[1]				423,000
Additional Paid-in Capital [Member] | Adjustment for Forfeitures Treatment [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption						$ 200,000
Additional Paid-in Capital [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	[1]				$ 200,000
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
Windset [Member]
Investment Ownership Percentage					26.90%		26.90%
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%
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
Adjustment for Unrecoganized Excess Tax Benefits [Member] | Deferred Taxes [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption						$ (549,000)
Adjustment for Forfeitures Treatment [Member] | Deferred Taxes [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption						(74,000)
Reclassifiction of Stock-based Compensation Excess Tax Benefits from Financing Activities to Operating Activities [Member] | Quarter Ended August 30th, 2015 [Member]
Prior Period Reclassification Adjustment					74,000
Prepaid Expenses and Other Current Assets [Member] | Line of Credit [Member]
Debt Issuance Costs, Net					77,000
Other Assets [Member] | Line of Credit [Member]
Debt Issuance Costs, Net					$ 150,000
Number of Proprietary Platforms					2
Loss Contingency, Loss in Period					$ 350,000
Loss Contingency Per Diluted Share					$ 0.01
Debt Issuance Costs, Net					$ 773,000	$ 817,000

[1] See Note 1 for a discussion of accounting principles adopted during the period.