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Revenue from Contracts with Customers - Disaggregation of Revenue (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	May 03, 2020	Feb. 02, 2020	Nov. 03, 2019	Aug. 04, 2019	Apr. 28, 2019	Jan. 27, 2019	Oct. 28, 2018	Jul. 29, 2018	May 03, 2020	Apr. 28, 2019	Apr. 29, 2018
Disaggregation of Revenue [Line Items]
Total Net Sales	$ 47,378	$ 68,518	$ 69,550	$ 70,719	$ 67,023	$ 73,127	$ 72,275	$ 68,898	$ 256,166	$ 281,325	$ 323,725
Transferred at Point in Time [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales									245,566	270,965
Transferred over Time [Member] | Services [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales									10,600	10,360
Mattress Fabrics [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales									131,412	145,671
Mattress Fabrics [Member] | Transferred at Point in Time [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales									131,412	145,671
Upholstery Fabrics [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales									124,754	135,654
Upholstery Fabrics [Member] | Transferred at Point in Time [Member] | Product [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales									114,154	125,294
Upholstery Fabrics [Member] | Transferred over Time [Member] | Services [Member]
Disaggregation of Revenue [Line Items]
Total Net Sales									$ 10,600	$ 10,360

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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.

+ 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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