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Revenue from Contracts with Customers - Disaggregation of Revenue (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Feb. 02, 2020	Jan. 27, 2019	Feb. 02, 2020	Jan. 27, 2019
Disaggregation of Revenue [Line Items]
Total Net Sales	$ 71,998	$ 77,226	$ 219,465	$ 225,705
Transferred at Point in Time [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	69,055	74,852	211,570	217,704
Transferred over Time [Member | Services [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	2,943	2,374	7,895	8,001
Mattress Fabrics [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	33,105	35,732	107,250	107,335
Mattress Fabrics [Member] | Transferred at Point in Time [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	33,105	35,732	107,250	107,335
Upholstery Fabrics [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	34,987	37,104	100,730	106,611
Upholstery Fabrics [Member] | Transferred at Point in Time [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	32,044	34,730	92,835	98,610
Upholstery Fabrics [Member] | Transferred over Time [Member | Services [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	2,943	2,374	7,895	8,001
Home Accessories [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	3,906	4,390	11,485	11,759
Home Accessories [Member] | Transferred at Point in Time [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales	$ 3,906	$ 4,390	$ 11,485	$ 11,759

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+ References

No definition available.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

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