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Document And Entity Information
 3 Months Ended
Aug. 31, 2014
Sep. 26, 2014
Document and Entity Information [Abstract]    
Entity Registrant Name LANDEC CORP \CA\  
Document Type 10-Q  
Current Fiscal Year End Date --05-31  
Entity Common Stock, Shares Outstanding   26,866,078
Amendment Flag false  
Entity Central Index Key 0001005286  
Entity Current Reporting Status Yes  
Entity Voluntary Filers No  
Entity Filer Category Accelerated Filer  
Entity Well-known Seasoned Issuer No  
Document Period End Date Aug. 31, 2014  
Document Fiscal Year Focus 2015  
Document Fiscal Period Focus Q1