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Segment Information - Capital Expenditures and Depreciation Expense By Operating Segments (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Jul. 28, 2013
Jul. 29, 2012
Segment Reporting Information [Line Items]    
Capital expenditures $ 658 [1] $ 991 [1]
Depreciation expense 1,305 1,254
Operating Segments [Member] | Mattress Fabrics [Member]
   
Segment Reporting Information [Line Items]    
Capital expenditures 263 969
Depreciation expense 1,149 1,092
Operating Segments [Member] | Upholstery Fabrics [Member]
   
Segment Reporting Information [Line Items]    
Capital expenditures 390 8
Depreciation expense 156 162
Unallocated corporate [Member]
   
Segment Reporting Information [Line Items]    
Capital expenditures $ 5 $ 14
[1] Capital expenditure amounts are stated on the accrual basis. See Consolidated Statement of Cash Flows for capital expenditure amounts on a cash basis.