Segment Information - Narrative (Detail)	12 Months Ended
	Apr. 28, 2024 Customer Segment	Apr. 30, 2023 Customer	May 01, 2022 Customer
Segment Reporting Information [Line Items]
Number of operating segments | Segment	2
Concentration risk, labor subject to collective bargaining arrangements	Hourly employees associated with our manufacturing facility located in Quebec, Canada (approximately 14% of our workforce) are represented by a local unaffiliated union with a collective bargaining agreement that expires on February 1, 2026. On April 29, 2024 (first quarter of fiscal 2025), our board of directors made a decision to gradually discontinue the operations and sale of the company's manufacturing facility located in Quebec, Canada. During this gradual discontinuation of operations, hourly employees will be entitled to compensation and benefits in accordance with the collective bargaining agreement noted above.
Canada [Member]
Segment Reporting Information [Line Items]
Percentage of manufacturing facility workforce	14.00%
Currency Concentration Risk [Member] | Net Sales [Member] | USD [Member]
Segment Reporting Information [Line Items]
Concentration risk percentage	92.00%	91.00%	90.00%
Geographic Concentration Risk [Member] | Net Sales [Member] | International [Member]
Segment Reporting Information [Line Items]
Concentration risk percentage	32.00%	29.00%	31.00%
Customer Concentration Risk [Member] | Net Sales [Member] | Upholstery Fabrics [Member]
Segment Reporting Information [Line Items]
Concentration risk percentage	12.00%	15.00%	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