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Segment Information - Balance Sheet Information by Operating Segments (Parenthetical) (Detail) - USD ($) | Jul. 31, 2022 | May 01, 2022 | Aug. 01, 2021
--- | --- | --- | ---
Segment Reporting Information [Line Items] |  |  |  |
property, plant, and equipment | $ 40,490,000 | $ 41,702,000 | [1] | $ 43,930,000
Right of use assets | 14,556,000 | 15,577,000 | [1] | 11,447,000
Operating Segments [Member] | Mattress Fabrics [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
property, plant, and equipment | 37,354,000 | 38,731,000 |  | 41,311,000
Right of use assets | 3,232,000 | 3,469,000 |  | 4,058,000
Operating Segments [Member] | Upholstery Fabrics [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
property, plant, and equipment | 2,271,000 | 2,030,000 |  | 1,650,000
Right of use assets | 7,520,000 | 8,124,000 |  | 5,984,000
Operating Segments [Member] | United States [Member] | Mattress Fabrics [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
property, plant, and equipment | 24,700,000 | 25,600,000 |  | 28,000,000.0
Right of use assets | 1,100,000 | 1,200,000 |  | 1,400,000
Operating Segments [Member] | United States [Member] | Upholstery Fabrics [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
property, plant, and equipment | 1,100,000 | 1,000,000.0 |  | 1,100,000
Right of use assets | 1,600,000 | 1,800,000 |  | 1,400,000
Operating Segments [Member] | Canada [Member] | Mattress Fabrics [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
property, plant, and equipment | 11,900,000 | 12,400,000 |  | 12,400,000
Right of use assets | 228,000 | 291,000 |  | 355,000
Operating Segments [Member] | Haiti [Member] | Mattress Fabrics [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
property, plant, and equipment | 718,000 | 757,000 |  | 875,000
Right of use assets | 1,900,000 | 2,000,000.0 |  | 2,300,000
Operating Segments [Member] | Haiti [Member] | Upholstery Fabrics [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
property, plant, and equipment | 988,000 | 756,000 |  | 130,000
Right of use assets | 2,500,000 | 2,600,000 |  |
Operating Segments [Member] | China [Member] | Upholstery Fabrics [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
property, plant, and equipment | 232,000 | 255,000 |  | 400,000
Right of use assets | 3,400,000 | 3,700,000 |  | 4,600,000
Unallocated Corporate [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
property, plant, and equipment | 865,000 | 941,000 |  | 969,000
Right of use assets | 3,804,000 | 3,984,000 |  | 1,405,000
Unallocated Corporate [Member] | United States [Member] |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
property, plant, and equipment | 865,000 | 941,000 |  | 969,000
Right of use assets | $ 3,800,000 | $ 4,000,000.0 |  | $ 1,400,000
[1] | Derived from audited financial statements.

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