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Product Warranties (Details) (USD $) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Oct. 26, 2013 | Oct. 27, 2012 | Oct. 26, 2013 | Oct. 27, 2012 | Apr. 27, 2013
Product Warranty Contingency [Line Items] |  |  |  |  |
Percentage of warranty liability relating to Upholstery Group (in hundredths) |  |  | 90.00% |  |
Reconciliation of changes in product warranty liability [Roll Forward] |  |  |  |  |
Balance as of the beginning of the period | $ 15,821,000 | $ 14,319,000 | $ 15,525,000 | $ 14,327,000 |
Accruals during the period | 3,884,000 | 3,518,000 | 7,672,000 | 6,908,000 |
Settlements during the period | (3,776,000) | (3,524,000) | (7,268,000) | (6,922,000) |
Balance as of the end of the period | 15,929,000 | 14,313,000 | 15,929,000 | 14,313,000 |
Amount of product warranty liability included in accrued expenses and other current liabilities | $ 9,900,000 |  | $ 9,900,000 |  | $ 9,500,000
Fabric and Leather [Member] |  |  |  |  |
Product Warranty Contingency [Line Items] |  |  |  |  |
Warranty term |  |  | 1 year |  |
Padding [Member] |  |  |  |  |
Product Warranty Contingency [Line Items] |  |  |  |  |
Warranty term |  |  | 1 to 10 years |  |
Certain Mechanisms and Frames [Member] |  |  |  |  |
Product Warranty Contingency [Line Items] |  |  |  |  |
Warranty term |  |  | Up to a lifetime |  |
Labor Costs Relating to Parts [Member] |  |  |  |  |
Product Warranty Contingency [Line Items] |  |  |  |  |
Warranty term |  |  | 1 year |  |

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- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph 5 -Article 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 5 -Paragraph 9, 10 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph ((c)(5)) -URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249 + Details
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- Definition Represents the aggregate decrease in the liability related to payments to satisfy claims for standard and extended product warranties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph ((c)(2)) -URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249 + Details
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- Definition Represents the aggregate increase in the liability for accruals related to standard and extended product warranties issued during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph ((c)(3)) -URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249 + Details
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- Definition Describes the nature of the product warranty, including the approximate term of the product warranty, how the product warranty arose, and the events or circumstances that would require the warrantor to perform under the product warranty. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12069-110248 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Interpretation (FIN) -Number 45 -Paragraph 13 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249 + Details
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