Document And Entity Information - shares	6 Months Ended
	Nov. 27, 2016	Dec. 22, 2016
Document Information [Line Items]
Entity Registrant Name	LANDEC CORP \CA\
Entity Central Index Key	0001005286
Trading Symbol	lndc
Current Fiscal Year End Date	--05-28
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)		27,270,832
Document Type	10-Q
Document Period End Date	Nov. 27, 2016
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q2
Amendment Flag	false