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Goodwill and Other Intangible Assets, Goodwill (Details) (USD $) | 12 Months Ended
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Apr. 25, 2015 | Apr. 26, 2014 | Apr. 27, 2013
Goodwill |  |  |
Cash paid to acquire dealer assets | $ 1,774,000 us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired | $ 801,000 us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired | $ 15,832,000 us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired
Roll-forward of goodwill |  |  |
Balance at beginning of period | 13,923,000 us-gaap_Goodwill | 12,837,000 us-gaap_Goodwill |
Acquisitions | 1,241,000 us-gaap_GoodwillAcquiredDuringPeriod | 1,086,000 us-gaap_GoodwillAcquiredDuringPeriod |
Balance at end of period | 15,164,000 us-gaap_Goodwill | 13,923,000 us-gaap_Goodwill | 12,837,000 us-gaap_Goodwill
Goodwill |  |  |
Key assumptions used in assessment of goodwill |  |  |
Discount rate | 11.50%us-gaap_FairValueInputsDiscountRate / us-gaap_FairValueByAssetClassAxis = us-gaap_GoodwillMember |  |
Terminal growth rate | 2.00%us-gaap_FairValueInputsLongTermRevenueGrowthRate / us-gaap_FairValueByAssetClassAxis = us-gaap_GoodwillMember |  |
Independent dealer assets acquired |  |  |
Goodwill |  |  |
Number of dealers whose assets were acquired | 2 us-gaap_NumberOfBusinessesAcquired / us-gaap_BusinessAcquisitionAxis = lzb_DealershipAssetAcquisitionsMember | 2 us-gaap_NumberOfBusinessesAcquired / us-gaap_BusinessAcquisitionAxis = lzb_DealershipAssetAcquisitionsMember |
Cash paid to acquire dealer assets | 1,800,000 us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired / us-gaap_BusinessAcquisitionAxis = lzb_DealershipAssetAcquisitionsMember | 800,000 us-gaap_PaymentsToAcquireBusinessesNetOfCashAcquired / us-gaap_BusinessAcquisitionAxis = lzb_DealershipAssetAcquisitionsMember |
Forgiveness of net accounts and notes receivable | $ 1,000,000 lzb_BusinessCombinationConsiderationTransferredReceivablesForgiven / us-gaap_BusinessAcquisitionAxis = lzb_DealershipAssetAcquisitionsMember | $ 3,000,000 lzb_BusinessCombinationConsiderationTransferredReceivablesForgiven / us-gaap_BusinessAcquisitionAxis = lzb_DealershipAssetAcquisitionsMember |

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- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Percentage of assumed long-term growth in revenues, used as an input to measure fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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- Definition Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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- Definition The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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