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Segment Information - Narrative (Detail) | 12 Months Ended
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May 02, 2021 Segment Customer | May 03, 2020 Customer | Apr. 28, 2019 Customer
Segment Reporting Information [Line Items] |  |  |
Number of operating segments | Segment | 2 |  |
Concentration risk, labor subject to collective bargaining arrangements | The hourly employees associated with our manufacturing facility located in Canada (approximately 12% of our workforce) are represented by a local, unaffiliated union. The collective bargaining agreement for these employees expires on February 1, 2023. We are not aware of any efforts to organize any more of our employees, and we believe our relations with our employees are good. |  |
Description of changes in reporting goodwill and intangible assets in segment assets | During fiscal 2019, we elected to no longer include goodwill and intangible assets in segment assets, as these assets are not used by the Chief Operating Decision Maker to evaluate the respective segment’s operating performance, to allocate resources to the individual segments, or determine executive compensation. |  |
Workforce [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Concentration risk percentage | 12.00% |  |
Currency Concentration Risk [Member] | Net Sales [Member] | USD [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Concentration risk percentage | 91.00% | 93.00% | 90.00%
Geographic Concentration Risk [Member] | Net Sales [Member] | International [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Concentration risk percentage | 27.00% | 26.00% | 26.00%
Customer Concentration Risk [Member] | Net Sales [Member] | Upholstery Fabrics [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Concentration risk percentage | 13.00% | 12.00% | 11.00%
Number of major customers | 1 | 1 | 1
Customer Concentration Risk [Member] | Net Sales [Member] | Mattress Fabrics [Member] | Minimum [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Concentration risk percentage | 10.00% | 10.00% | 10.00%
Number of major customers | 0 | 0 | 0
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Upholstery Fabrics [Member] | Minimum [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Concentration risk percentage | 10.00% | 10.00% |
Number of major customers | 0 | 0 |
Customer Concentration Risk [Member] | Accounts Receivable [Member] | Mattress Fabrics [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Concentration risk percentage | 12.00% | 10.00% |
Number of major customers | 1 | 0 |

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