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v2.4.1.9

Investments (Details) (USD $) | 12 Months Ended
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Apr. 25, 2015 | Apr. 26, 2014 | Apr. 27, 2013
Summary of investments |  |  |
Gross Unrealized Gains | $ 2,239,000 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax | $ 1,413,000 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax |
Gross Unrealized Losses | (114,000)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax | (106,000)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax |
Fair Value | 61,195,000 us-gaap_MarketableSecurities | 60,938,000 us-gaap_MarketableSecurities |
Sales of available-for-sale securities |  |  |
Proceeds from sales | 33,750,000 us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities | 34,557,000 us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities | 18,662,000 us-gaap_ProceedsFromSaleOfAvailableForSaleSecurities
Gross realized gains | 285,000 us-gaap_AvailableForSaleSecuritiesGrossRealizedGains | 857,000 us-gaap_AvailableForSaleSecuritiesGrossRealizedGains | 4,486,000 us-gaap_AvailableForSaleSecuritiesGrossRealizedGains
Gross realized losses | (74,000)us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses | (559,000)us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses | (1,316,000)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 | 16,900,000 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesNextRollingTwelveMonthsFairValue |  |
Fair value, available-for-sale securities with contractual maturity within two to five years | 32,000,000 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearTwoThroughFiveFairValue |  |
Fair value, available-for-sale securities with contractual maturity within six to ten years | 1,300,000 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingYearSixThroughTenFairValue |  |
Fair value, available-for-sale securities with contractual maturity after ten years | 200,000 us-gaap_AvailableForSaleSecuritiesDebtMaturitiesRollingAfterYearTenFairValue |  |
Investments Used to Enhance Returns on Cash |  |  |
Summary of investments |  |  |
Fair Value | 45,500,000 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 | 16,800,000 us-gaap_AvailableForSaleSecurities / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember | 15,900,000 us-gaap_AvailableForSaleSecurities / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember |
Trading securities | 1,100,000 us-gaap_TradingSecurities / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember | 1,800,000 us-gaap_TradingSecurities / us-gaap_BalanceSheetLocationAxis = us-gaap_OtherCurrentAssetsMember |
Other long-term assets |  |  |
Investments |  |  |
Available-for-sale investments | 43,300,000 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 | 2,014,000 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquitySecuritiesMember | 1,246,000 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquitySecuritiesMember |
Gross Unrealized Losses | (78,000)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquitySecuritiesMember | (52,000)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquitySecuritiesMember |
Fair Value | 9,251,000 us-gaap_MarketableSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquitySecuritiesMember | 8,216,000 us-gaap_MarketableSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_EquitySecuritiesMember |
Fixed income |  |  |
Summary of investments |  |  |
Gross Unrealized Gains | 224,000 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeSecuritiesMember | 166,000 us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedGainBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeSecuritiesMember |
Gross Unrealized Losses | (14,000)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeSecuritiesMember | (44,000)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeSecuritiesMember |
Fair Value | 50,358,000 us-gaap_MarketableSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeSecuritiesMember | 50,510,000 us-gaap_MarketableSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_FixedIncomeSecuritiesMember |
Mutual funds |  |  |
Summary of investments |  |  |
Fair Value | 1,127,000 us-gaap_MarketableSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember | 1,787,000 us-gaap_MarketableSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_AssetBackedSecuritiesMember |
Other |  |  |
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 |
Gross Unrealized Losses | (22,000)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherDebtSecuritiesMember | (10,000)us-gaap_AvailableForSaleSecuritiesAccumulatedGrossUnrealizedLossBeforeTax / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherDebtSecuritiesMember |
Fair Value | $ 459,000 us-gaap_MarketableSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherDebtSecuritiesMember | $ 425,000 us-gaap_MarketableSecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_OtherDebtSecuritiesMember |

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