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Segment Information - Capital Expenditures and Depreciation Expense by Operating Segments (Detail) (USD $) In Thousands, unless otherwise specified | 9 Months Ended
--- | ---
Jan. 27, 2013 | Jan. 29, 2012
Segment Reporting Information [Line Items] |  |  |  |
Capital expenditures | $ 2,594 | [1] | $ 3,593 | [1]
Depreciation expense | 3,818 |  | 3,600 |
Mattress Fabrics [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Capital expenditures | 2,223 |  | 2,761 |
Depreciation expense | 3,344 |  | 3,163 |
Upholstery Fabrics [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Capital expenditures | 222 |  | 481 |
Depreciation expense | 474 |  | 437 |
Unallocated corporate expenses [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Capital expenditures | $ 149 |  | $ 351 |
[1] | Capital expenditure amounts are stated on the accrual basis. See Consolidated Statement of Cash Flows for capital expenditure amounts on a cash basis.

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- Definition Total expenditures for additions to long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets of the reportable segment; if the amount: (a) is included in the determination of segment assets reviewed by the chief operating decision maker or (b) is otherwise regularly provided to the chief operating decision maker, even if not included in the determination of segment assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -Paragraph 28 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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. + Details
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- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -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 AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 -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 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 + Details
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