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Segment Information - Balance Sheet Information by Operating Segments (Parenthetical) (Detail) - USD ($)
$ in Thousands
May. 03, 2015
Feb. 01, 2015
Nov. 02, 2014
Aug. 03, 2014
Apr. 27, 2014
Jan. 26, 2014
Oct. 27, 2013
Jul. 28, 2013
Apr. 28, 2013
Segment Reporting Information [Line Items]                  
Property, plant and equipment $ 36,078 $ 35,269 $ 33,204 $ 31,891 $ 31,376 $ 30,115 $ 30,559 $ 30,808  
United States [Member] | Mattress Fabrics [Member]                  
Segment Reporting Information [Line Items]                  
Property, plant and equipment 23,800       20,600       $ 20,400
United States [Member] | Upholstery Fabrics [Member]                  
Segment Reporting Information [Line Items]                  
Property, plant and equipment 848       957       908
Canada [Member] | Mattress Fabrics [Member]                  
Segment Reporting Information [Line Items]                  
Property, plant and equipment 10,000       8,400       8,200
China [Member] | Upholstery Fabrics [Member]                  
Segment Reporting Information [Line Items]                  
Property, plant and equipment 619       572       265
Poland [Member] | Upholstery Fabrics [Member]                  
Segment Reporting Information [Line Items]                  
Property, plant and equipment         44       57
Unallocated corporate [Member]                  
Segment Reporting Information [Line Items]                  
Property, plant and equipment [1] $ 838       $ 763       $ 786
[1] The $838, $763, and $786 balance at May 3, 2015, April 27, 2014, and April 28, 2013, represent property, plant, and equipment associated with unallocated corporate departments and corporate departments shared by both the mattress and upholstery fabric segments.