The number of major customers of concentration risk.

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- Definition

Description of any concentration of labor subject to collective bargaining agreements, including the general nature of the risk.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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- Definition

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

+ References

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- Definition

Indicates title and position of individual or name of group identified as chief operating decision maker (CODM) for segment reporting.

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- Definition

Description of how chief operating decision maker (CODM) uses reported segment profit (loss) measure to assess performance and allocate resource.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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Segment Information - Narrative (Detail)	12 Months Ended
Segment Information - Narrative (Detail)	Apr. 27, 2025 Customer Segment	Apr. 28, 2024 Customer	Apr. 30, 2023 Customer
Segment Reporting Information [Line Items]
Number of operating segments \| Segment	2
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]	srt:ChiefExecutiveOfficerMember
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description	who regularly reviews the financial results of the company on a consolidated and business segment basis for the purpose of evaluating financial and operating performance, allocation of resources to the individual segments noted above, and determining executive compensation. Accordingly, our CODM reviews certain financial metrics that include net sales and (loss) income from operations before unallocated corporate expenses and other items that are not expected to occur on a regular basis (i.e., restructuring activities), as well as: (i) cost of sales, (ii) gross profit, (iii) selling, general, and administrative expenses, including unallocated corporate expenses, (iv) assets used in operations, which generally include accounts receivable, inventory, property, plant, and equipment, right of use assets, and assets held for sale; and (v) capital spending.
Concentration risk, labor subject to collective bargaining arrangements	Hourly employees associated with the mattress fabrics operation located in Quebec, Canada were represented by a local unaffiliated union with a collective bargaining agreement that was set to expire on February 1, 2026. On April 29, 2024 (first quarter of fiscal 2025), our board of directors made a decision to gradually discontinue this operation with the intention to ultimately sell the related building and land. As a result, as of April 27, 2025, there were only six hourly employees remaining to ready the building and land for sale, which such sale to a third party occurred during the first quarter of fiscal 2026. As a result of this sale, the remaining hourly employees were terminated. All hourly employees were provided compensation and benefits in accordance with the collective bargaining agreement noted above.
Currency Concentration Risk [Member] \| Net Sales [Member] \| USD [Member]
Segment Reporting Information [Line Items]
Concentration risk percentage	92.00%	92.00%	91.00%
Geographic Concentration Risk [Member] \| Net Sales [Member] \| International [Member]
Segment Reporting Information [Line Items]
Concentration risk percentage	33.00%	32.00%	29.00%
Customer Concentration Risk [Member] \| Net Sales [Member] \| Upholstery Fabrics [Member]
Segment Reporting Information [Line Items]
Concentration risk percentage	11.00%	12.00%	15.00%
Number of major customers	1	1	1
Customer Concentration Risk [Member] \| Net Sales [Member] \| Mattress Fabrics [Member]
Segment Reporting Information [Line Items]
Concentration risk percentage	11.00%
Number of major customers	1
Customer Concentration Risk [Member] \| Net Sales [Member] \| Mattress Fabrics [Member] \| Minimum [Member]
Segment Reporting Information [Line Items]
Number of major customers		0	0
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Upholstery Fabrics [Member] \| Minimum [Member]
Segment Reporting Information [Line Items]
Number of major customers	0	0
Customer Concentration Risk [Member] \| Accounts Receivable [Member] \| Mattress Fabrics [Member]
Segment Reporting Information [Line Items]
Number of major customers	0	0