Revenue from Contracts with Customers - Disaggregation of Revenue (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jul. 30, 2023	Jul. 31, 2022
Disaggregation of Revenue [Line Items]
Total Net Sales	$ 56,662	$ 62,604
Transferred at Point in Time [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	53,996	60,894
Transferred over Time [Member] | Services [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	2,666	1,710
Mattress Fabrics [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	29,222	29,371
Mattress Fabrics [Member] | Transferred at Point in Time [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	29,222	29,371
Upholstery Fabrics [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	27,440	33,233
Upholstery Fabrics [Member] | Transferred at Point in Time [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	24,774	31,523
Upholstery Fabrics [Member] | Transferred over Time [Member] | Services [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	$ 2,666	$ 1,710