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Note 1 - Organization, Basis of Presentation, and Summary of Significant Accounting Policies - Significant Unobservable Inputs Used in Discounted Cash Flow Models (Details) - Windset [Member]	12 Months Ended
	May 27, 2018	May 28, 2017
Measurement Input, Long-term Revenue Growth Rate [Member]
Measurement input	0.06	0.04
Measurement Input, Long-term Expense Growth Rate [Member]
Measurement input	0.06	0.04
Measurement Input, Income Tax Rates [Member]
Measurement input	0.15	0.15
Measurement Input, Discount Rate [Member]
Measurement input	0.12	0.12

X

- Definition

Value of input used to measure cash surrender value of insurance policy.

+ References

No definition available.

+ Details

Name:	lndc_InvestmentMeasurementInput
Namespace Prefix:	lndc_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputLongTermRevenueGrowthRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	invest_InvestmentAxis=lndc_WindsetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MeasurementInputTypeAxis=lndc_MeasurementInputLongtermExpenseGrowthRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MeasurementInputTypeAxis=lndc_MeasurementInputIncomeTaxRatesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputDiscountRateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: