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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 12 Months Ended
Jul. 15, 2014
Oct. 29, 2014
Feb. 15, 2011
Aug. 30, 2015
Aug. 31, 2014
May. 31, 2015
Jul. 25, 2013
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      
Apio [Member] | Senior B Preferred Stock [Member] | Windset [Member]              
Investment In Non Public Company Shares   70,000 150,000        
Payments to Acquire Investments $ 11,000,000 $ 7,000,000 $ 15,000,000        
Apio [Member] | Junior Preferred Shares [Member] | Windset [Member]              
Investment In Non Public Company Shares 51,211            
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       $ 62,300,000   $ 61,500,000  
Landec Long-Term Incentive Plan [Member] | Bonus Under Long-term Incentive Plan [Member]              
Employee-related Liabilities             $ 2,000,000
Decrease in Selling, General and Administrative Expenses         $ 677,000    
Landec Long-Term Incentive Plan [Member]              
Long-term Incentive Plan, Term       3 years      
Windset [Member]              
Investment Ownership Percentage       26.90%      
Product Concentration Risk [Member] | HA Based Biomaterials [Member] | Sales Revenue, Goods, Net [Member] | Ophthalmic [Member]              
Concentration Risk, Percentage           60.00%  
Customer Concentration Risk [Member] | HA Based Biomaterials [Member] | Sales Revenue, Goods, Net [Member] | Orthopedic [Member]              
Concentration Risk, Percentage           20.00%  
Number of Proprietary Platforms       2      
Payments to Acquire Investments       $ 11,000,000