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Leases - Narrative (Detail) |  | 12 Months Ended
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Mar. 23, 2023 ft² | Apr. 27, 2025 USD ($) | Apr. 28, 2024 USD ($) | Apr. 30, 2023 USD ($)
Leases and Commitments and Contingencies Disclosure [Line Items] |  |  |  |
Lessee, operating lease, option to extend |  | renewal options for additional periods ranging up to nine years |  |
Area of facility | ft² | 63,522 |  |  |
Leasehold improvements |  | $ 2,044,000 | $ 2,388,000 |
Mattress Fabrics [Member] |  |  |  |
Leases and Commitments and Contingencies Disclosure [Line Items] |  |  |  |
Rental payments |  |  |  | $ 123,000
Leasehold improvements |  |  |  | 67,000
Continuing Operation [Member] |  |  |  |
Leases and Commitments and Contingencies Disclosure [Line Items] |  |  |  |
Operating lease costs |  | 2,900,000 | 3,100,000 | 3,600,000
Short-term lease costs |  | $ 13,000 | $ 34,000 | $ 44,000
Minimum [Member] |  |  |  |
Leases and Commitments and Contingencies Disclosure [Line Items] |  |  |  |
Operating lease remaining lease terms |  | 1 year |  |
Maximum [ Member] |  |  |  |
Leases and Commitments and Contingencies Disclosure [Line Items] |  |  |  |
Operating lease remaining lease terms |  | 7 years |  |

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- Definition Amount before accumulated depreciation of additions or improvements to assets held under a lease arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482099/360-10-50-1 + Details
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- Definition Description of terms and conditions of option to extend lessee's operating lease. Includes, but is not limited to, information about option recognized as part of right-of-use asset and lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-3 + Details
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- Definition Remaining lease term of operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-7A Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-3 + Details
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