Segment Information - Statement of Operations for Operating Segments (Detail) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Oct. 29, 2023		Oct. 30, 2022		Oct. 29, 2023		Oct. 30, 2022
Segment Reporting Information [Line Items]
net sales	$ 58,725		$ 58,381		$ 115,387		$ 120,985
gross profit (loss)	7,950		(2,213)		15,035		1,914
restructuring related credit (charge)	78	[1]	(98)	[1]	(101)	[2]	(98)	[2]
selling, general, and administrative expenses	10,045		9,103		19,874		17,968
loss from operations	(2,239)		(11,931)		(5,321)		(16,669)
restructuring expense	(144)	[3]	(615)	[3]	(482)	[4]	(615)	[4]
interest income	282		79		627		96
other income	49		829		145		747
Loss before income taxes	(1,908)		(11,023)		(4,549)		(15,826)
Mattress Fabrics [Member]
Segment Reporting Information [Line Items]
net sales	31,377		26,230		60,599		55,602
Upholstery Fabrics [Member]
Segment Reporting Information [Line Items]
net sales	27,348		32,151		54,788		65,383
Operating Segments [Member]
Segment Reporting Information [Line Items]
gross profit (loss)	7,872		(2,115)		15,136		2,012
loss from operations	(2,173)		(11,218)		(4,738)		(15,956)
Operating Segments [Member] | Mattress Fabrics [Member]
Segment Reporting Information [Line Items]
net sales	31,377		26,230		60,599		55,602
gross profit (loss)	2,483		(6,057)		4,477		(6,093)
selling, general, and administrative expenses	3,419		2,945		6,811		5,829
loss from operations	(936)		(9,002)		(2,334)		(11,922)
Operating Segments [Member] | Upholstery Fabrics [Member]
Segment Reporting Information [Line Items]
net sales	27,348		32,151		54,788		65,383
gross profit (loss)	5,389		3,942		10,659		8,105
selling, general, and administrative expenses	3,998		3,680		7,939		7,302
loss from operations	1,391		262		2,720		803
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
gross profit (loss)	78	[1]	(98)	[1]	(101)	[2]	(98)	[2]
Unallocated Corporate [Member]
Segment Reporting Information [Line Items]
selling, general, and administrative expenses	2,628		2,478		5,124		4,837
loss from operations	$ (2,628)		$ (2,478)		$ (5,124)		$ (4,837)

[1] Gross profit and loss from operations for the three months ending October 29, 2023, includes restructuring related credits of $78,000 for the gain on disposal of inventory related to the discontinuation of production of cut and sewn upholstery kits in Ouanaminthe, Haiti. Gross loss and loss from operations for the three months ending October 30, 2022, includes restructuring related charges totaling $98,000 for loss on disposal and markdowns of inventory associated with the exit of our cut and sewn upholstery fabrics operation located in Shanghai, China.

[2] Gross profit and loss from operations for the six months ending October 29, 2023, includes a net restructuring related charge of $101,000, which represents a markdown of inventory totaling $179,000 during the first quarter of fiscal 2024, partially offset by a gain on disposal of inventory totaling $78,000 during the second quarter of fiscal 2024, both of which related to the discontinuation of production of cut and sewn upholstery kits at our facility located in Ouanaminthe, Haiti. Gross profit and loss from operations for the six months ending October 30, 2022 includes restructuring related charges totaling $98,000 for loss on disposal and markdowns of inventory associated with the exit of our cut and sewn upholstery fabrics operation located in Shanghai, China.

[3] Restructuring expense of $144,000 for the three months ended October 29, 2023, represents a $142,000 impairment charge related to equipment and $2,000 of employee termination benefits related to the discontinuation of production of cut and sewn upholstery kits in Ouanaminthe, Haiti. Restructuring expense of $615,000 for the three-months ended October 30, 2022, represents $468,000 for employee termination benefits, $80,000 related to a loss on disposal of equipment, $47,000 for lease termination costs, and $20,000 of other associated costs related to the exit of our cut and sew upholstery fabrics operation located in Shanghai, China.

[4] Restructuring expense of $482,000 for the six months ended October 29, 2023, represents a $379,000 impairment charge associated with equipment and $103,000 for employee termination benefits related to the discontinuation of production of cut and sewn upholstery kits in Ouanaminthe, Haiti. Restructuring expense of $615,000 for the six-months ended October 30, 2022, represents $468,000 for employee termination benefits, $80,000 related to a loss on disposal of equipment, $47,000 for lease termination costs, and $20,000 of other associated costs related to the exit of our cut and sew upholstery fabrics operation located in Shanghai, China.