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v2.4.1.9

Investments (Details) (USD $) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jan. 24, 2015 | Jan. 25, 2014 | Jan. 24, 2015 | Jan. 25, 2014 | Apr. 26, 2014
Summary of investments |  |  |  |  |
Gross Unrealized Gains | $ 1,755,000 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax |  | $ 1,755,000 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax |  | $ 1,413,000 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax
Gross Unrealized Losses | (201,000)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax |  | (201,000)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax |  | (106,000)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
Fair Value | 60,445,000 us-gaap_MarketableSecurities |  | 60,445,000 us-gaap_MarketableSecurities |  | 60,938,000 us-gaap_MarketableSecurities
Sales of available-for-sale securities |  |  |  |  |
Proceeds from sales | 6,160,000 us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities | 9,778,000 us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities | 23,987,000 us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities | 27,974,000 us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities |
Gross realized gains | 209,000 us-gaap_AvailableForSaleSecuritiesGrossRealizedGains | 775,000 us-gaap_AvailableForSaleSecuritiesGrossRealizedGains | 254,000 us-gaap_AvailableForSaleSecuritiesGrossRealizedGains | 820,000 us-gaap_AvailableForSaleSecuritiesGrossRealizedGains |
Gross realized losses | (23,000)us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses | (473,000)us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses | (53,000)us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses | (538,000)us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses |
Fair value of available-for-sale securities by contractual maturity |  |  |  |  |
Fair value, available-for-sale securities with contractual maturity within one year | 18,900,000 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue |  | 18,900,000 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue |  |
Fair value, available-for-sale securities with contractual maturity within two to five years | 29,600,000 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue |  | 29,600,000 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue |  |
Fair value, available-for-sale securities with contractual maturity within six to ten years | 1,500,000 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue |  | 1,500,000 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue |  |
Fair value, available-for-sale securities with contractual maturity after ten years | 500,000 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue |  | 500,000 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue |  |
Investments Used to Enhance Returns on Cash |  |  |  |  |
Summary of investments |  |  |  |  |
Fair Value | 45,300,000 us-gaap_MarketableSecurities / us-gaap_InvestmentSecondaryCategorizationAxis = lzb_InvestmentsUsedToEnhanceReturnsOnCashMember |  | 45,300,000 us-gaap_MarketableSecurities / us-gaap_InvestmentSecondaryCategorizationAxis = lzb_InvestmentsUsedToEnhanceReturnsOnCashMember |  | 44,700,000 us-gaap_MarketableSecurities / us-gaap_InvestmentSecondaryCategorizationAxis = lzb_InvestmentsUsedToEnhanceReturnsOnCashMember
Other Current Assets |  |  |  |  |
Investments |  |  |  |  |
Available-for-sale investments | 18,900,000 us-gaap_AvailableForSaleSecurities / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember |  | 18,900,000 us-gaap_AvailableForSaleSecurities / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember |  | 15,900,000 us-gaap_AvailableForSaleSecurities / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember
Trading securities | 900,000 us-gaap_TradingSecurities / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember |  | 900,000 us-gaap_TradingSecurities / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember |  | 1,800,000 us-gaap_TradingSecurities / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember
Other Noncurrent Assets |  |  |  |  |
Investments |  |  |  |  |
Available-for-sale investments | 40,600,000 us-gaap_AvailableForSaleSecurities / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember |  | 40,600,000 us-gaap_AvailableForSaleSecurities / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember |  | 43,200,000 us-gaap_AvailableForSaleSecurities / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherNoncurrentAssetsMember
Equity Securities |  |  |  |  |
Summary of investments |  |  |  |  |
Gross Unrealized Gains | 1,567,000 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquitySecuritiesMember |  | 1,567,000 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquitySecuritiesMember |  | 1,246,000 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquitySecuritiesMember
Gross Unrealized Losses | (109,000)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquitySecuritiesMember |  | (109,000)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquitySecuritiesMember |  | (52,000)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquitySecuritiesMember
Fair Value | 8,740,000 us-gaap_MarketableSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquitySecuritiesMember |  | 8,740,000 us-gaap_MarketableSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquitySecuritiesMember |  | 8,216,000 us-gaap_MarketableSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquitySecuritiesMember
Fixed Income Securities |  |  |  |  |
Summary of investments |  |  |  |  |
Gross Unrealized Gains | 187,000 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeSecuritiesMember |  | 187,000 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeSecuritiesMember |  | 166,000 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeSecuritiesMember
Gross Unrealized Losses | (72,000)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeSecuritiesMember |  | (72,000)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeSecuritiesMember |  | (44,000)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeSecuritiesMember
Fair Value | 50,466,000 us-gaap_MarketableSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeSecuritiesMember |  | 50,466,000 us-gaap_MarketableSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeSecuritiesMember |  | 50,510,000 us-gaap_MarketableSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeSecuritiesMember
Asset-backed Securities |  |  |  |  |
Summary of investments |  |  |  |  |
Fair Value | 875,000 us-gaap_MarketableSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember |  | 875,000 us-gaap_MarketableSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember |  | 1,787,000 us-gaap_MarketableSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember
Other Debt Obligations |  |  |  |  |
Summary of investments |  |  |  |  |
Gross Unrealized Gains | 1,000 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherDebtSecuritiesMember |  | 1,000 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherDebtSecuritiesMember |  | 1,000 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherDebtSecuritiesMember
Gross Unrealized Losses | (20,000)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherDebtSecuritiesMember |  | (20,000)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherDebtSecuritiesMember |  | (10,000)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherDebtSecuritiesMember
Fair Value | $ 364,000 us-gaap_MarketableSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherDebtSecuritiesMember |  | $ 364,000 us-gaap_MarketableSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherDebtSecuritiesMember |  | $ 425,000 us-gaap_MarketableSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherDebtSecuritiesMember

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