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Employee Benefits - Total Costs Associated with Plans (Details) - USD ($) $ in Thousands | 12 Months Ended
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Apr. 27, 2024 | Apr. 29, 2023 | Apr. 30, 2022
401(k) Retirement Plan |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Labor and related expense | $ 14,698 | $ 12,877 | $ 11,763
Performance Compensation Retirement Plan |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Labor and related expense | (133) | 160 | 1,654
Deferred Compensation Plan |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Labor and related expense | (86) | 202 | 242
Non-Qualified Defined Benefit Retirement Plan |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |
Labor and related expense | $ 737 | $ 748 | $ 763

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- Definition Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefit. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(b)(4)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 + Details
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