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Business Combinations - Mattress Fabric Segment - Narrative (Detail) - USD ($) | 12 Months Ended
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May. 03, 2015 | Apr. 27, 2014
Non-compete Agreement [Member] |  |
Business Acquisition [Line Items] |  |
Intangible asset, useful life | 15 years |
Customer Relationships [Member] |  |
Business Acquisition [Line Items] |  |
Intangible asset, useful life | 17 years |
Bodet And Horst [Member] |  |
Business Acquisition [Line Items] |  |
Direct acquisition costs related to business combination |  | $ 83,000
Bodet And Horst [Member] | Equipment [Member] |  |
Business Acquisition [Line Items] |  |
Tangible asset, useful life | 7 years |
Bodet And Horst [Member] | Non-compete Agreement [Member] |  |
Business Acquisition [Line Items] |  |
Intangible asset, useful life | 15 years |
Bodet And Horst [Member] | Customer Relationships [Member] |  |
Business Acquisition [Line Items] |  |
Intangible asset, useful life | 17 years |

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- Definition This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=34752592&loc=d3e1043-128460 + Details
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