Segment Information - Balance Sheet Information by Operating Segments (Parenthetical) (Detail) - USD ($) $ in Thousands		Aug. 02, 2015	May. 03, 2015		Aug. 03, 2014
Segment Reporting Information [Line Items]
Property, plant and equipment		$ 37,480	$ 36,078	[1]	$ 31,891
Unallocated corporate [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment	[2]	846	838		707
United States [Member] | Unallocated corporate [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment		846	838		707
Mattress Fabrics [Member] | United States [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment		23,600	23,800		21,200
Mattress Fabrics [Member] | Canada [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment		11,500	10,000		8,400
Upholstery Fabrics [Member] | United States [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment		818	848		911
Upholstery Fabrics [Member] | China [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment		$ 700	$ 619		627
Upholstery Fabrics [Member] | Poland [Member]
Segment Reporting Information [Line Items]
Property, plant and equipment					$ 42

[1] Derived from audited financial statements.

[2] The $846, $707, and $838 at August 2, 2015, August 3, 2014 and May 3, 2015, respectively, represent property, plant, and equipment associated with unallocated corporate departments and corporate departments shared by both the mattress and upholstery fabric segments. Property, plant, and equipment associated with corporate are located in the U.S.