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Note 11 - Business Segment Reporting - Operations by Business Segment (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Mar. 01, 2015
Feb. 23, 2014
Mar. 01, 2015
Feb. 23, 2014
Net sales $ 138,530us-gaap_SalesRevenueNet $ 126,379us-gaap_SalesRevenueNet $ 404,809us-gaap_SalesRevenueNet $ 355,884us-gaap_SalesRevenueNet
International sales 37,903us-gaap_OtherSalesRevenueNet 33,302us-gaap_OtherSalesRevenueNet 125,875us-gaap_OtherSalesRevenueNet 105,197us-gaap_OtherSalesRevenueNet
Gross profit 16,885us-gaap_GrossProfit 20,155us-gaap_GrossProfit 46,738us-gaap_GrossProfit 46,421us-gaap_GrossProfit
Net income 3,772us-gaap_NetIncomeLoss 6,400us-gaap_NetIncomeLoss 9,348us-gaap_NetIncomeLoss 14,603us-gaap_NetIncomeLoss
Depreciation and amortization 1,834us-gaap_DepreciationDepletionAndAmortization 1,577us-gaap_DepreciationDepletionAndAmortization 5,177us-gaap_DepreciationDepletionAndAmortization 5,364us-gaap_DepreciationDepletionAndAmortization
Dividend income 413us-gaap_InvestmentIncomeDividend 281us-gaap_InvestmentIncomeDividend 1,015us-gaap_InvestmentIncomeDividend 844us-gaap_InvestmentIncomeDividend
Interest income 85us-gaap_InvestmentIncomeInterest 78us-gaap_InvestmentIncomeInterest 269us-gaap_InvestmentIncomeInterest 183us-gaap_InvestmentIncomeInterest
Interest expense 510us-gaap_InterestExpense 390us-gaap_InterestExpense 1,365us-gaap_InterestExpense 1,257us-gaap_InterestExpense
Income tax expense 2,324us-gaap_IncomeTaxExpenseBenefit 3,679us-gaap_IncomeTaxExpenseBenefit 5,409us-gaap_IncomeTaxExpenseBenefit 8,028us-gaap_IncomeTaxExpenseBenefit
Corporate Segment [Member]        
Net sales 140us-gaap_SalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
96us-gaap_SalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
402us-gaap_SalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
282us-gaap_SalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
Gross profit 121us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
96us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
382us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
223us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
Net income (2,218)us-gaap_NetIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
(1,129)us-gaap_NetIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
(3,231)us-gaap_NetIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
(3,435)us-gaap_NetIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
Depreciation and amortization 33us-gaap_DepreciationDepletionAndAmortization
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
32us-gaap_DepreciationDepletionAndAmortization
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
95us-gaap_DepreciationDepletionAndAmortization
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
103us-gaap_DepreciationDepletionAndAmortization
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
Interest income 7us-gaap_InvestmentIncomeInterest
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
1us-gaap_InvestmentIncomeInterest
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
27us-gaap_InvestmentIncomeInterest
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
1us-gaap_InvestmentIncomeInterest
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
Income tax expense 1,505us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
1,125us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
3,394us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
3,159us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_StatementBusinessSegmentsAxis
= us-gaap_CorporateMember
Food Export [Member]        
Net sales 8,199us-gaap_SalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodExportMember
10,676us-gaap_SalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodExportMember
56,902us-gaap_SalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodExportMember
55,106us-gaap_SalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodExportMember
International sales 8,086us-gaap_OtherSalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodExportMember
10,676us-gaap_OtherSalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodExportMember
56,779us-gaap_OtherSalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodExportMember
55,005us-gaap_OtherSalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodExportMember
Gross profit 771us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodExportMember
990us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodExportMember
3,507us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodExportMember
4,015us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodExportMember
Net income (6)us-gaap_NetIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodExportMember
206us-gaap_NetIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodExportMember
847us-gaap_NetIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodExportMember
1,209us-gaap_NetIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodExportMember
Depreciation and amortization 1us-gaap_DepreciationDepletionAndAmortization
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodExportMember
1us-gaap_DepreciationDepletionAndAmortization
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodExportMember
3us-gaap_DepreciationDepletionAndAmortization
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodExportMember
3us-gaap_DepreciationDepletionAndAmortization
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodExportMember
Income tax expense   58us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodExportMember
139us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodExportMember
341us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodExportMember
Food Products Technology [Member]        
Net sales 115,392us-gaap_SalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
95,431us-gaap_SalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
317,577us-gaap_SalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
262,957us-gaap_SalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
International sales 21,423us-gaap_OtherSalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
12,013us-gaap_OtherSalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
57,334us-gaap_OtherSalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
31,836us-gaap_OtherSalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
Gross profit 9,735us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
7,282us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
32,739us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
24,383us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
Net income 2,949us-gaap_NetIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
131us-gaap_NetIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
10,239us-gaap_NetIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
9,402us-gaap_NetIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
Depreciation and amortization 1,232us-gaap_DepreciationDepletionAndAmortization
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
1,040us-gaap_DepreciationDepletionAndAmortization
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
3,479us-gaap_DepreciationDepletionAndAmortization
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
3,566us-gaap_DepreciationDepletionAndAmortization
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
Dividend income 413us-gaap_InvestmentIncomeDividend
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
281us-gaap_InvestmentIncomeDividend
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
1,015us-gaap_InvestmentIncomeDividend
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
844us-gaap_InvestmentIncomeDividend
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
Interest income 5us-gaap_InvestmentIncomeInterest
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
3us-gaap_InvestmentIncomeInterest
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
31us-gaap_InvestmentIncomeInterest
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
8us-gaap_InvestmentIncomeInterest
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
Interest expense 467us-gaap_InterestExpense
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
332us-gaap_InterestExpense
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
1,230us-gaap_InterestExpense
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
1,064us-gaap_InterestExpense
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
Income tax expense 323us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
468us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
1,633us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
2,434us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_FoodProductsTechnologyMember
HA Based Biomaterials [Member]        
Net sales 14,799us-gaap_SalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
20,176us-gaap_SalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
29,928us-gaap_SalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
37,539us-gaap_SalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
International sales 8,394us-gaap_OtherSalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
10,613us-gaap_OtherSalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
11,762us-gaap_OtherSalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
18,356us-gaap_OtherSalesRevenueNet
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
Gross profit 6,258us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
11,787us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
10,110us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
17,800us-gaap_GrossProfit
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
Net income 3,047us-gaap_NetIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
7,192us-gaap_NetIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
1,493us-gaap_NetIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
7,427us-gaap_NetIncomeLoss
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
Depreciation and amortization 568us-gaap_DepreciationDepletionAndAmortization
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
504us-gaap_DepreciationDepletionAndAmortization
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
1,600us-gaap_DepreciationDepletionAndAmortization
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
1,692us-gaap_DepreciationDepletionAndAmortization
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
Interest income 73us-gaap_InvestmentIncomeInterest
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
74us-gaap_InvestmentIncomeInterest
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
211us-gaap_InvestmentIncomeInterest
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
174us-gaap_InvestmentIncomeInterest
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
Interest expense 43us-gaap_InterestExpense
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
58us-gaap_InterestExpense
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
135us-gaap_InterestExpense
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
193us-gaap_InterestExpense
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
Income tax expense $ 496us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
$ 2,028us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
$ 243us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember
$ 2,094us-gaap_IncomeTaxExpenseBenefit
/ us-gaap_StatementBusinessSegmentsAxis
= lndc_HAbasedBiomaterialsMember