Document And Entity Information - shares	9 Months Ended
	Feb. 24, 2019	Apr. 01, 2019
Document And Entity Information [Abstract]
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 Emerging Growth Company	false
Entity Small Business	false
Entity Common Stock, Shares Outstanding (in shares)		29,182,631
Document Type	10-Q
Document Period End Date	Feb. 24, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	Q3
Amendment Flag	false