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Segment Information - Capital Expenditures and Depreciation Expense By Operating Segments (Detail) - USD ($)
$ in Thousands
6 Months Ended
Nov. 01, 2015
Nov. 02, 2014
Segment Reporting Information [Line Items]    
Capital expenditures [1] $ 5,535 $ 4,988
Depreciation expense 3,184 2,812
Operating Segments [Member] | Mattress Fabrics [Member]    
Segment Reporting Information [Line Items]    
Capital expenditures 5,138 4,692
Depreciation expense 2,783 2,448
Operating Segments [Member] | Upholstery Fabrics [Member]    
Segment Reporting Information [Line Items]    
Capital expenditures 254 258
Depreciation expense 401 364
Unallocated corporate [Member]    
Segment Reporting Information [Line Items]    
Capital expenditures $ 143 $ 38
[1] Capital expenditure amounts are stated on the accrual basis. See Consolidated Statements of Cash Flows for capital expenditure amounts on a cash basis.