Segment Information - Statement of Operations for Operating Segments (Detail) - USD ($)		3 Months Ended
		Jul. 30, 2023	Jul. 31, 2022
Segment Reporting Information [Line Items]
net sales		$ 56,662,000	$ 62,604,000
gross profit		7,085,000	4,128,000
restructuring related charge	[1]	(179,000)
selling, general, and administrative expenses		9,829,000	8,866,000
loss from operations		(3,082,000)	(4,738,000)
restructuring expense	[2]	(338,000)
interest income		345,000	17,000
other income (expense)		96,000	(82,000)
Loss before income taxes		(2,641,000)	(4,803,000)
Mattress Fabrics [Member]
Segment Reporting Information [Line Items]
net sales		29,222,000	29,371,000
Upholstery Fabrics [Member]
Segment Reporting Information [Line Items]
net sales		27,440,000	33,233,000
Operating Segments [Member]
Segment Reporting Information [Line Items]
gross profit		7,264,000	4,128,000
loss from operations		(2,565,000)	(4,738,000)
Operating Segments [Member] | Mattress Fabrics [Member]
Segment Reporting Information [Line Items]
net sales		29,222,000	29,371,000
gross profit		1,994,000	(37,000)
selling, general, and administrative expenses		3,393,000	2,885,000
loss from operations		(1,398,000)	(2,921,000)
Operating Segments [Member] | Upholstery Fabrics [Member]
Segment Reporting Information [Line Items]
net sales		27,440,000	33,233,000
gross profit		5,270,000	4,165,000
selling, general, and administrative expenses		3,941,000	3,622,000
loss from operations		1,328,000	542,000
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
gross profit	[1]	(179,000)
Unallocated Corporate [Member]
Segment Reporting Information [Line Items]
selling, general, and administrative expenses		2,495,000	2,359,000
loss from operations		$ (2,495,000)	$ (2,359,000)

[1] Gross profit for the three months ending July 30, 2023, includes restructuring related charges totaling $179,000 for markdowns of inventory related to the discontinuation of production of cut and sewn upholstery kits in Ouanaminthe, Haiti.

[2] Restructuring expense of $338,000 for the three months ended July 30, 2023, represents a $237,000 impairment charge related mostly to certain machinery and equipment and $101,000 of employee termination benefits related to the discontinuation of production of cut and sewn upholstery kits in Ouanaminthe, Haiti.