v3.10.0.1
Document And Entity Information - shares
3 Months Ended
Aug. 26, 2018
Sep. 21, 2018
Document Information [Line Items]    
Entity Registrant Name LANDEC CORP \CA\  
Entity Central Index Key 0001005286  
Trading Symbol lndc  
Current Fiscal Year End Date --05-26  
Entity Filer Category Accelerated Filer  
Entity Current Reporting Status Yes  
Entity Common Stock, Shares Outstanding (in shares)   27,749,280
Document Type 10-Q  
Document Period End Date Aug. 26, 2018  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q1  
Amendment Flag false  
Entity Emerging Growth Company false  
Entity Small Business false