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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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- 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 + Details
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