v3.7.0.1
Document And Entity Information - shares
3 Months Ended
Aug. 27, 2017
Sep. 20, 2017
Document Information [Line Items]    
Entity Registrant Name LANDEC CORP \CA\  
Entity Central Index Key 0001005286  
Trading Symbol lndc  
Current Fiscal Year End Date --05-27  
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)   27,506,712
Document Type 10-Q  
Document Period End Date Aug. 27, 2017  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q1  
Amendment Flag false