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Revenue from Contracts with Customers - Disaggregation of Revenue (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jul. 28, 2024	Jul. 30, 2023
Disaggregation of Revenue [Line Items]
Total Net Sales	$ 56,537	$ 56,662
Transferred at Point in Time [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	53,541	53,996
Transferred over Time [Member] | Services [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	2,996	2,666
Mattress Fabrics [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	28,076	29,222
Mattress Fabrics [Member] | Transferred at Point in Time [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	28,076	29,222
Upholstery Fabrics [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	28,461	27,440
Upholstery Fabrics [Member] | Transferred at Point in Time [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	25,465	24,774
Upholstery Fabrics [Member] | Transferred over Time [Member] | Services [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	$ 2,996	$ 2,666

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