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Stock-Based Compensation, Performance Awards (Details) (USD $) | 12 Months Ended
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Apr. 25, 2015 | Apr. 26, 2014 | Apr. 27, 2013
Stock-Based Compensation |  |  |
Equity based compensation expenses | $ 11,377,000 us-gaap_AllocatedShareBasedCompensationExpense | $ 14,475,000 us-gaap_AllocatedShareBasedCompensationExpense | $ 13,628,000 us-gaap_AllocatedShareBasedCompensationExpense
Performance Awards |  |  |
Stock-Based Compensation |  |  |
Percentage of payout dependent on financial performance | 80.00%lzb_PerformanceAwardCriteriaPercentageBasedOnFinancialPerformance / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember |  |
Percentage of payout dependent on total shareholder return | 20.00%lzb_PerformanceAwardCriteriaPercentageBasedOnMarketCondition / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember |  |
Performance Awards | Minimum |  |  |
Stock-Based Compensation |  |  |
Performance award opportunity as a percentage of target award | 50.00%lzb_PercentagesOfEmployeesTargetAward / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember / us-gaap_RangeAxis = us-gaap_MinimumMember |  |
Performance Awards | Maximum |  |  |
Stock-Based Compensation |  |  |
Performance award opportunity as a percentage of target award | 200.00%lzb_PercentagesOfEmployeesTargetAward / us-gaap_AwardTypeAxis = us-gaap_PerformanceSharesMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  |
Performance awards, performance period | 3 years |  |
Performance-Based Shares |  |  |
Stock-Based Compensation |  |  |
Number of shares or units granted | 192,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = lzb_PerformanceBasedSharesMember | 191,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = lzb_PerformanceBasedSharesMember | 133,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = lzb_PerformanceBasedSharesMember
Unrecognized compensation cost | 3,100,000 us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions / us-gaap_AwardTypeAxis = lzb_PerformanceBasedSharesMember |  |
Period for recognition of unrecognized compensation costs | 1 year 4 months 24 days |  |
Performance-Based Shares | Fiscal 2011 Grant |  |  |
Stock-Based Compensation |  |  |
Equity based compensation expenses |  |  | 1,707,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardDateAxis = lzb_AwardsGrantedDuring2011Member / us-gaap_AwardTypeAxis = lzb_PerformanceBasedSharesMember
Performance-Based Shares | Fiscal 2012 Grant |  |  |
Stock-Based Compensation |  |  |
Equity based compensation expenses |  | 3,603,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardDateAxis = lzb_AwardsGrantedDuring2012Member / us-gaap_AwardTypeAxis = lzb_PerformanceBasedSharesMember | 5,442,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardDateAxis = lzb_AwardsGrantedDuring2012Member / us-gaap_AwardTypeAxis = lzb_PerformanceBasedSharesMember
Performance-Based Shares | Fiscal 2013 Grant |  |  |
Stock-Based Compensation |  |  |
Number of shares or units earned | 171,000 lzb_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedToDate / us-gaap_AwardDateAxis = lzb_AwardsGrantedDuring2013Member / us-gaap_AwardTypeAxis = lzb_PerformanceBasedSharesMember |  |
Equity based compensation expenses | 568,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardDateAxis = lzb_AwardsGrantedDuring2013Member / us-gaap_AwardTypeAxis = lzb_PerformanceBasedSharesMember | 849,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardDateAxis = lzb_AwardsGrantedDuring2013Member / us-gaap_AwardTypeAxis = lzb_PerformanceBasedSharesMember | 440,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardDateAxis = lzb_AwardsGrantedDuring2013Member / us-gaap_AwardTypeAxis = lzb_PerformanceBasedSharesMember
Performance-Based Shares | Fiscal 2014 Grant |  |  |
Stock-Based Compensation |  |  |
Number of shares or units earned | 84,000 lzb_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedToDate / us-gaap_AwardDateAxis = lzb_AwardsGrantedDuring2014Member / us-gaap_AwardTypeAxis = lzb_PerformanceBasedSharesMember |  |
Equity based compensation expenses | 769,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardDateAxis = lzb_AwardsGrantedDuring2014Member / us-gaap_AwardTypeAxis = lzb_PerformanceBasedSharesMember | 1,006,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardDateAxis = lzb_AwardsGrantedDuring2014Member / us-gaap_AwardTypeAxis = lzb_PerformanceBasedSharesMember |
Performance-Based Shares | Fiscal 2015 Grant |  |  |
Stock-Based Compensation |  |  |
Number of shares or units earned | 49,000 lzb_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedToDate / us-gaap_AwardDateAxis = lzb_AwardsGrantedDuring2015Member / us-gaap_AwardTypeAxis = lzb_PerformanceBasedSharesMember |  |
Equity based compensation expenses | 908,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardDateAxis = lzb_AwardsGrantedDuring2015Member / us-gaap_AwardTypeAxis = lzb_PerformanceBasedSharesMember |  |
Performance-Based Shares | Vesting Based on Performance | Fiscal 2013 Grant |  |  |
Stock-Based Compensation |  |  |
Fair value on date of grant (in dollars per share) |  |  | $ 11.97 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_AwardDateAxis = lzb_AwardsGrantedDuring2013Member / us-gaap_AwardTypeAxis = lzb_PerformanceBasedSharesMember / lzb_VestingCriteriaAxis = lzb_VestingBasedOnPerformanceMember
Performance-Based Shares | Vesting Based on Performance | Fiscal 2014 Grant |  |  |
Stock-Based Compensation |  |  |
Fair value on date of grant (in dollars per share) |  | $ 18.58 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_AwardDateAxis = lzb_AwardsGrantedDuring2014Member / us-gaap_AwardTypeAxis = lzb_PerformanceBasedSharesMember / lzb_VestingCriteriaAxis = lzb_VestingBasedOnPerformanceMember |
Performance-Based Shares | Vesting Based on Performance | Fiscal 2015 Grant |  |  |
Stock-Based Compensation |  |  |
Fair value on date of grant (in dollars per share) | $ 22.91 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_AwardDateAxis = lzb_AwardsGrantedDuring2015Member / us-gaap_AwardTypeAxis = lzb_PerformanceBasedSharesMember / lzb_VestingCriteriaAxis = lzb_VestingBasedOnPerformanceMember |  |
Performance-Based Shares | Vesting Based on Market | Fiscal 2013 Grant |  |  |
Stock-Based Compensation |  |  |
Fair value on date of grant (in dollars per share) |  |  | $ 15.41 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_AwardDateAxis = lzb_AwardsGrantedDuring2013Member / us-gaap_AwardTypeAxis = lzb_PerformanceBasedSharesMember / lzb_VestingCriteriaAxis = lzb_VestingBasedOnMarketMember
Performance-Based Shares | Vesting Based on Market | Fiscal 2014 Grant |  |  |
Stock-Based Compensation |  |  |
Fair value on date of grant (in dollars per share) |  | $ 26.08 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_AwardDateAxis = lzb_AwardsGrantedDuring2014Member / us-gaap_AwardTypeAxis = lzb_PerformanceBasedSharesMember / lzb_VestingCriteriaAxis = lzb_VestingBasedOnMarketMember |
Performance-Based Shares | Vesting Based on Market | Fiscal 2015 Grant |  |  |
Stock-Based Compensation |  |  |
Fair value on date of grant (in dollars per share) | $ 29.64 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_AwardDateAxis = lzb_AwardsGrantedDuring2015Member / us-gaap_AwardTypeAxis = lzb_PerformanceBasedSharesMember / lzb_VestingCriteriaAxis = lzb_VestingBasedOnMarketMember |  |
Performance-Based Units |  |  |
Stock-Based Compensation |  |  |
Number of shares or units granted |  | 35,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = lzb_PerformanceBasedUnitsMember | 146,000 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod / us-gaap_AwardTypeAxis = lzb_PerformanceBasedUnitsMember
Equity based compensation expenses | 2,000,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = lzb_PerformanceBasedUnitsMember | 2,200,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = lzb_PerformanceBasedUnitsMember | 700,000 us-gaap_AllocatedShareBasedCompensationExpense / us-gaap_AwardTypeAxis = lzb_PerformanceBasedUnitsMember
Unrecognized compensation cost | $ 300,000 us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions / us-gaap_AwardTypeAxis = lzb_PerformanceBasedUnitsMember |  |
Period for recognition of unrecognized compensation costs | 1 year 1 month 6 days |  |
Performance-Based Units | Fiscal 2013 Grant |  |  |
Stock-Based Compensation |  |  |
Number of shares or units earned | 154,000 lzb_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedToDate / us-gaap_AwardDateAxis = lzb_AwardsGrantedDuring2013Member / us-gaap_AwardTypeAxis = lzb_PerformanceBasedUnitsMember |  |
Performance-Based Units | Fiscal 2014 Grant |  |  |
Stock-Based Compensation |  |  |
Number of shares or units earned | 14,000 lzb_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedToDate / us-gaap_AwardDateAxis = lzb_AwardsGrantedDuring2014Member / us-gaap_AwardTypeAxis = lzb_PerformanceBasedUnitsMember |  |
Performance-Based Units | Vesting Based on Performance | Fiscal 2013 Grant |  |  |
Stock-Based Compensation |  |  |
Fair value (in dollars per unit) | $ 27.41 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValue / us-gaap_AwardDateAxis = lzb_AwardsGrantedDuring2013Member / us-gaap_AwardTypeAxis = lzb_PerformanceBasedUnitsMember / lzb_VestingCriteriaAxis = lzb_VestingBasedOnPerformanceMember |  |
Performance-Based Units | Vesting Based on Performance | Fiscal 2014 Grant |  |  |
Stock-Based Compensation |  |  |
Fair value (in dollars per unit) | $ 27.09 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValue / us-gaap_AwardDateAxis = lzb_AwardsGrantedDuring2014Member / us-gaap_AwardTypeAxis = lzb_PerformanceBasedUnitsMember / lzb_VestingCriteriaAxis = lzb_VestingBasedOnPerformanceMember |  |
Performance-Based Units | Vesting Based on Market | Fiscal 2013 Grant |  |  |
Stock-Based Compensation |  |  |
Fair value (in dollars per unit) | $ 51.75 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValue / us-gaap_AwardDateAxis = lzb_AwardsGrantedDuring2013Member / us-gaap_AwardTypeAxis = lzb_PerformanceBasedUnitsMember / lzb_VestingCriteriaAxis = lzb_VestingBasedOnMarketMember |  |
Performance-Based Units | Vesting Based on Market | Fiscal 2014 Grant |  |  |
Stock-Based Compensation |  |  |
Fair value (in dollars per unit) | $ 42.37 us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedIntrinsicValue / us-gaap_AwardDateAxis = lzb_AwardsGrantedDuring2014Member / us-gaap_AwardTypeAxis = lzb_PerformanceBasedUnitsMember / lzb_VestingCriteriaAxis = lzb_VestingBasedOnMarketMember |  |

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- Definition The percentage of the payout for a performance share award that is based on the achievement of financial performance. + References No definition available. + Details
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- Definition The percentage of the payout for a performance share award that is based on the achievement of the total return that shareholders receive on their investment in the reporting entity's common stock relative to returns earned through investments in other public companies. + References No definition available. + Details
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- Definition The cumulative number of equity-based payment instruments, excluding stock (or unit) options, that have vested to date. + References No definition available. + Details
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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation. + References No definition available. + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Per share weighted average intrinsic value of equity-based compensation awards not vested. Excludes stock and unit options. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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