Fair Value - Narrative (Detail) - USD ($) |
Aug. 03, 2025 |
Apr. 27, 2025 |
Jul. 28, 2024 |
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| Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items] | ||||||
| Investments (Rabbi Trust) - available for sale | $ 7,100,000 | $ 7,000,000 | $ 8,000,000 | |||
| Short-term investments (Rabbi Trust) - available for sale | 1,395,000 | 1,325,000 | [1] | 954,000 | ||
| Long-term investments (Rabbi Trust) - available for sale | 5,700,000 | 5,700,000 | 7,100,000 | |||
| Accumulated unrealized gain (loss) on investments | $ 292,000 | $ 150,000 | $ 198,000 | |||
| Investment, Type [Extensible Enumeration] | us-gaap:InvestmentsMember | us-gaap:InvestmentsMember | us-gaap:InvestmentsMember | |||
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- Definition Available for sale debt and equity securities accumulated gross unrealized gain (loss) before tax. No definition available.
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- Definition Available for sale securities debt and equity securities. No definition available.
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- Definition Available for sale securities debt and equity securities rabbi trust, current No definition available.
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- Definition Available for sale securities debt and equity securities rabbi trust noncurrent. No definition available.
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Indicates type of investment. Includes, but is not limited to, common stock, preferred stock, convertible security, fixed income security, government security, option purchased, warrant, loan participation and assignment, commercial paper, bankers' acceptance, certificates of deposit, short-term security, repurchase agreement, and other investment company. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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