v3.10.0.1
Document And Entity Information - USD ($)
$ in Thousands
12 Months Ended
May 27, 2018
Jul. 27, 2018
Nov. 26, 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)   27,735,798  
Entity Public Float     $ 294,832
Document Type 10-K    
Document Period End Date May 27, 2018    
Document Fiscal Year Focus 2018    
Document Fiscal Period Focus FY    
Amendment Flag false