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v3.25.2

General and Summary of Significant Accounting Policies - Narrative (Detail) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Apr. 27, 2025 USD ($) | Apr. 27, 2025 USD ($) Segment | Apr. 28, 2024 USD ($) | Apr. 30, 2023 USD ($)
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Number of Operating Segments | Segment |  | 2 |  |
Number of Reportable Segments | Segment |  | 2 |  |
Non-cash inventory charges |  | $ (2,423,000) | $ (1,628,000) | $ 5,819,000
Non-cash inventory (credit) charge |  | (2,400,000) | (1,600,000) | 5,800,000
Reserve for inventory markdowns | $ 7,800,000 | 7,800,000 | 9,600,000 |
Rabbi trust investments | $ 7,000,000 | 7,000,000 | 8,000,000 |
Interest costs incurred on lines of credit |  | 231,000 | 11,000 | 0
Interest cost capitalized |  | 0 | 0 | 0
Asset impairment charges |  | $ 540,000 | 0 | 0
Dividends received deduction percentage for earnings and profits received from foreign corporation |  | 100.00% |  |
Dividends received deduction, foreign corporation ownership percentage |  | 10.00% |  |
Selling, general and administrative expenses |  | $ 35,705,000 | 38,611,000 | 37,978,000
Change in accounting principle, accounting standards update, adopted [true false] | true | true |  |
Change in accounting principle, accounting standards update, adoption period |  | during the fourth quarter of fiscal 2025 |  |
Change in accounting principle, accounting standards update, immaterial effect [true false] | false | false |  |
Accounting standards update [extensible enumeration] |  | us-gaap:AccountingStandardsUpdate202307Member |  |
Cost of Sales [Member] |  |  |  |
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Non-cash inventory (credit) charge | $ (1,700,000) |  |  |
Mattress and Upholstery Fabrics [Member] |  |  |  |
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Non-cash inventory (credit) charge | (1,700,000) |  |  |
Mattress Fabrics [Member] |  |  |  |
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Non-cash inventory charges |  |  |  | 2,900,000
Shipping and Handling [Member] |  |  |  |
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Selling, general and administrative expenses |  | $ 4,600,000 | 4,600,000 | $ 4,200,000
Rabbi Trust Investments [Member] |  |  |  |
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Unrealized gain (loss) on investments | $ 150,000 | $ 150,000 | $ 118,000 |

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