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Document And Entity Information
 6 Months Ended
Nov. 30, 2014
Dec. 26, 2014
Entity Registrant Name LANDEC CORP \CA\  
Entity Central Index Key 0001005286  
Current Fiscal Year End Date --05-31  
Entity Filer Category Accelerated Filer  
Entity Current Reporting Status Yes  
Entity Voluntary Filers No  
Entity Well-known Seasoned Issuer No  
Entity Common Stock, Shares Outstanding (in shares)   26,875,984dei_EntityCommonStockSharesOutstanding
Document Type 10-Q  
Document Period End Date Nov. 30, 2014  
Document Fiscal Year Focus 2015  
Document Fiscal Period Focus Q2  
Amendment Flag false