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Revenue from Contracts with Customers - Disaggregation of Revenue (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jul. 31, 2022	Aug. 01, 2021
Disaggregation of Revenue [Line Items]
Total Net Sales	$ 62,604	$ 83,047
Transferred at Point in Time [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	60,894	81,348
Transferred over Time [Member] | Services [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	1,710	1,699
Mattress Fabrics [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	29,371	43,058
Mattress Fabrics [Member] | Transferred at Point in Time [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	29,371	43,058
Upholstery Fabrics [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	33,233	39,989
Upholstery Fabrics [Member] | Transferred at Point in Time [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	31,523	38,290
Upholstery Fabrics [Member] | Transferred over Time [Member] | Services [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	$ 1,710	$ 1,699

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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