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Segment Information - Financial Information by Operating Segments (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Jul. 29, 2012 | Jul. 31, 2011
Segment Reporting Information [Line Items] |  |
Net sales | $ 69,184 | $ 60,270
Gross profit | 13,120 | 8,878
Selling, general, and administrative expenses | 7,641 | 5,757
Income from operations | 5,479 | 3,121
Interest expense | (190) | (220)
Interest income | 127 | 129
Other expense | (44) | (65)
Income before income taxes | 5,372 | 2,965
Mattress Fabrics [Member] |  |
Segment Reporting Information [Line Items] |  |
Net sales | 37,964 | 32,170
Gross profit | 7,622 | 5,137
Selling, general, and administrative expenses | 2,391 | 1,992
Income from operations | 5,230 | 3,146
Upholstery Fabrics [Member] |  |
Segment Reporting Information [Line Items] |  |
Net sales | 31,220 | 28,100
Gross profit | 5,498 | 3,741
Selling, general, and administrative expenses | 3,340 | 2,766
Income from operations | 2,159 | 974
Total reportable segments [Member] |  |
Segment Reporting Information [Line Items] |  |
Selling, general, and administrative expenses | 5,731 | 4,758
Income from operations | 7,389 | 4,120
Unallocated corporate expenses [Member] |  |
Segment Reporting Information [Line Items] |  |
Selling, general, and administrative expenses | 1,910 | 999
Income from operations | $ (1,910) | $ (999)

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- Definition Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1,2) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
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- Definition This element represents the income or loss from continuing operations attributable to the economic entity which may also be defined as revenue less expenses from ongoing operations, after income or loss from equity method investments, but before income taxes, extraordinary items, and noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 10 -Article 5 + Details
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- Definition The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 43 -Paragraph 5A -Chapter 4 -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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 4 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6386349&loc=d3e3636-108311 + Details
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