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Product Warranties (Details) (USD $)	3 Months Ended		6 Months Ended
	Oct. 25, 2014	Oct. 26, 2013	Oct. 25, 2014	Oct. 26, 2013	Apr. 26, 2014
Reconciliation of changes in product warranty liability [Roll Forward]
Balance as of the beginning of the period	$ 15,256,000	$ 15,821,000	$ 16,013,000	$ 15,525,000
Accruals during the period	4,600,000	3,884,000	8,917,000	7,672,000
Accrual adjustments			(953,000)
Settlements during the period	(4,316,000)	(3,776,000)	(8,437,000)	(7,268,000)
Balance as of the end of the period	15,540,000	15,929,000	15,540,000	15,929,000
Product warranty liability included in accrued expenses and other current liabilities	$ 9,500,000		$ 9,500,000		$ 9,800,000
Upholstery Group
Product Liability Contingency [Line Items]
Percentage of warranty liability relating to the segment			95.00%
Fabric and Leather
Product Liability Contingency [Line Items]
Warranty term			1 year
Padding | Minimum
Product Liability Contingency [Line Items]
Warranty term			1 year
Padding | Maximum
Product Liability Contingency [Line Items]
Warranty term			10 years
Labor Costs Relating To Parts
Product Liability Contingency [Line Items]
Warranty term			1 year

X

- Definition

The percentage of the warranty liability that relates to the reportable segment.

+ References

No definition available.

+ Details

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X

- Definition

The period between issuance and expiration of product warranties.

+ References

No definition available.

+ Details

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- Details

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X

- 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 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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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	instant

X

- 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

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- Definition

Represents the aggregate Increase or Decrease in the liability during the reporting period for accruals related to preexisting standard and extended product warranties (including adjustments for changes in estimates).

+ 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)(4))

-URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249

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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

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X

- Definition

Amount as of the balance sheet date of the aggregate standard product warranty liability that is expected to be paid within one year or the normal operating cycle, if longer. Does not include the balance for the extended product warranty liability.

+ References

No definition available.

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