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Segment Information - Balance Sheet Information by Operating Segments (Parenthetical) (Detail) - USD ($)
$ in Thousands
Apr. 28, 2019
Jan. 27, 2019
Oct. 28, 2018
Jul. 29, 2018
Apr. 29, 2018
Jan. 28, 2018
Oct. 29, 2017
Jul. 30, 2017
Segment Reporting Information [Line Items]                
Property, plant and equipment $ 48,389 $ 50,129 $ 51,325 $ 53,178 $ 51,794 $ 51,838 $ 52,530 $ 52,912
Operating Segments [Member] | Mattress Fabrics [Member]                
Segment Reporting Information [Line Items]                
Property, plant and equipment 44,266 [1]       48,797 [2]      
Operating Segments [Member] | Upholstery Fabrics [Member]                
Segment Reporting Information [Line Items]                
Property, plant and equipment 1,795 [3]       2,445 [4]      
Operating Segments [Member] | Home Accessories [Member]                
Segment Reporting Information [Line Items]                
Property, plant and equipment [5] 1,910              
Operating Segments [Member] | United States [Member] | Mattress Fabrics [Member]                
Segment Reporting Information [Line Items]                
Property, plant and equipment 32,400       35,400      
Operating Segments [Member] | United States [Member] | Upholstery Fabrics [Member]                
Segment Reporting Information [Line Items]                
Property, plant and equipment 1,200       1,800      
Operating Segments [Member] | United States [Member] | Home Accessories [Member]                
Segment Reporting Information [Line Items]                
Property, plant and equipment 1,900              
Operating Segments [Member] | Canada [Member] | Mattress Fabrics [Member]                
Segment Reporting Information [Line Items]                
Property, plant and equipment 11,900       13,400      
Operating Segments [Member] | China [Member] | Upholstery Fabrics [Member]                
Segment Reporting Information [Line Items]                
Property, plant and equipment 591,000       661,000      
Unallocated Corporate [Member]                
Segment Reporting Information [Line Items]                
Property, plant and equipment [6] 418       552      
Unallocated Corporate [Member] | United States [Member]                
Segment Reporting Information [Line Items]                
Property, plant and equipment $ 418       $ 552      
[1] The $44.3 million at April 28, 2019, represents property, plant, and equipment located in the U.S. of $32.4 million and located in Canada of $11.9 million.
[2] The $48.8 million at April 29, 2018, represents property, plant, and equipment located in the U.S. of $35.4 million and located in Canada of $13.4 million.
[3] The $1.8 million at April 28, 2019, represents property, plant, and equipment located in the U.S. of $1.2 million and located in China of $591.
[4] The $2.4 million at April 29, 2018, represents property, plant, and equipment located in the U.S. of $1.8 million and located in China of $661.
[5] The $1.9 million at April 28, 2019, represents property, plant, and equipment located in the U.S.
[6] The $418 and $552 at April 28, 2019, and April 29, 2018, represent property, plant, and equipment associated with unallocated corporate departments and corporate departments shared by both the mattress fabrics, upholstery fabrics, and home accessories segments located in the U.S.