| Document and Entity Information Document | May 05, 2021 | Feb. 28, 2021 |
| Cover [Abstract] | ||
| Document Type | 8-K | |
| Document Period End Date | May 5, 2021 | |
| Entity Registrant Name | LANDEC CORPORATION | |
| Entity Central Index Key | 0001005286 | |
| Entity Incorporation, State or Country Code | DE | |
| Entity File Number | 000-27446 | |
| Entity Tax Identification Number | 94-3025618 | |
| Entity Address, Address Line One | 2811 Airpark Drive | |
| Entity Address, City or Town | Santa Maria, | |
| Entity Address, State or Province | CA | |
| Entity Address, Postal Zip Code | 93455 | |
| City Area Code | 650 | |
| Local Phone Number | 306-1650 | |
| Written Communications | false | |
| Soliciting Material | false | |
| Pre-commencement Tender Offer | false | |
| Pre-commencement Issuer Tender Offer | false | |
| Title of 12(b) Security | Common Stock, par value $.001 per share | |
| Trading Symbol | LNDC | |
| Security Exchange Name | NASDAQ | |
| Entity Emerging Growth Company | false | |
| Amendment Flag | false |
