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Inventories - Narrative (Detail) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Oct. 29, 2023 | Jul. 30, 2023 | Oct. 30, 2022 | Oct. 31, 2021 | Oct. 29, 2023 | Oct. 30, 2022
Inventory [Line Items] |  |  |  |  |  |
Non-cash inventory charges | $ (1,300,000) |  | $ 5,300,000 |  | $ (2,000,000) | $ 6,400,000
Non-cash inventory charges |  |  |  |  | (2,001,000) | 6,439,000
Exit of Cut and Sew Upholstery Fabrics Operation [Member] | Ouanaminthe, Haiti [Member] |  |  |  |  |  |
Inventory [Line Items] |  |  |  |  |  |
Gain (Loss) on disposal | 78,000 |  |  |  |  |
Partially offset charge for markdowns of inventory | 78,000 |  |  |  |  |
Mattress and Upholstery Fabrics [Member] |  |  |  |  |  |
Inventory [Line Items] |  |  |  |  |  |
Non-cash inventory charges | (1,300,000) |  | 2,300,000 |  | (2,000,000) | 3,400,000
Credit related adjustments to inventory | 1,200,000 |  |  |  | 2,100,000 |
Restructuring related charge |  |  |  |  | 101,000 |
Mattress Fabrics [Member] |  |  |  |  |  |
Inventory [Line Items] |  |  |  |  |  |
Non-cash inventory charges | (801,000) |  | $ 3,800,000 |  | (1,500,000) | 4,200,000
Percentage of decline in net sales |  |  | 35.80% |  |  |
Gross margin percentage excluding non-cash inventory charges |  |  | (8.70%) |  |  |
Gross margin percentage |  |  |  | 15.00% |  |
Non-cash inventory charges |  |  | $ 2,900,000 |  |  | 2,900,000
Upholstery Fabrics [Member] |  |  |  |  |  |
Inventory [Line Items] |  |  |  |  |  |
Non-cash inventory charges | (482,000) |  | 1,500,000 |  | $ (453,000) | 2,200,000
Upholstery Fabrics [Member] | Disposal and Markdowns of Inventory [Member] | Ouanaminthe, Haiti [Member] |  |  |  |  |  |
Inventory [Line Items] |  |  |  |  |  |
Restructuring related charge | $ 78,000 | $ 179,000 |  |  |  |
Upholstery Fabrics [Member] | Disposal and Markdowns of Inventory [Member] | Shanghai, China [Member] |  |  |  |  |  |
Inventory [Line Items] |  |  |  |  |  |
Restructuring related charge |  |  | $ 98,000 |  |  | $ 98,000

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