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Segment Information - Narrative (Detail)	12 Months Ended
	Apr. 30, 2023 Customer Segment	May 01, 2022 Customer	May 02, 2021 Customer
Segment Reporting Information [Line Items]
Number of operating segments | Segment	2
Concentration risk, labor subject to collective bargaining arrangements	The hourly employees associated with our manufacturing facility located in Canada (approximately 11% of our workforce) are represented by a local, unaffiliated union. The collective bargaining agreement for these employees expires on February 1, 2026. We are not aware of any efforts to organize any more of our employees, and we believe our relations with our employees are good.
Canada [Member]
Segment Reporting Information [Line Items]
Percentage of manufacturing facility workforce	11.00%
Currency Concentration Risk [Member] | Net Sales [Member] | USD [Member]
Segment Reporting Information [Line Items]
Concentration risk percentage	91.00%	90.00%	91.00%
Geographic Concentration Risk [Member] | Net Sales [Member] | International [Member]
Segment Reporting Information [Line Items]
Concentration risk percentage	29.00%	31.00%	27.00%
Customer Concentration Risk [Member] | Net Sales [Member] | Upholstery Fabrics [Member]
Segment Reporting Information [Line Items]
Concentration risk percentage	15.00%	13.00%	13.00%
Number of major customers	1	1	1
Customer Concentration Risk [Member] | Net Sales [Member] | Mattress Fabrics [Member] | Minimum [Member]
Segment Reporting Information [Line Items]
Concentration risk percentage	10.00%	10.00%	10.00%
Number of major customers	0	0	0
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Upholstery Fabrics [Member] | Minimum [Member]
Segment Reporting Information [Line Items]
Concentration risk percentage	10.00%	10.00%
Number of major customers	0	0
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Mattress Fabrics [Member]
Segment Reporting Information [Line Items]
Concentration risk percentage	10.00%	10.00%
Number of major customers	0	0

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

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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.

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