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Employee Benefits - Further Information Related to Plans (Details) - USD ($)
$ in Thousands
12 Months Ended
Apr. 30, 2022
Apr. 24, 2021
Apr. 25, 2020
Non-Qualified Defined Benefit Retirement Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Discount rate used to determine obligation 4.30% 3.00%  
Actuarial loss recognized in AOCI $ 306 $ 347 $ 218
Benefit payments 1,182 1,091 $ 1,091
Other current liabilities | Performance Compensation Retirement Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Plan obligation included in liabilities 1,922 716  
Other current liabilities | Non-Qualified Defined Benefit Retirement Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Plan obligation included in liabilities 1,059 1,066  
Other long-term liabilities | Performance Compensation Retirement Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Plan obligation included in liabilities 13,898 15,194  
Other long-term liabilities | Executive Deferred Compensation Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Plan obligation included in other long-term liabilities 24,595 26,548  
Other long-term liabilities | Non-Qualified Defined Benefit Retirement Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Plan obligation included in liabilities 12,461 14,717  
Other long-term assets | Executive Deferred Compensation Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Cash surrender value on life insurance contracts included in other long-term assets 42,699 $ 41,133  
Minimum | Non-Qualified Defined Benefit Retirement Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Annual benefit payments for the next 10 years 1,000    
Maximum | Non-Qualified Defined Benefit Retirement Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Annual benefit payments for the next 10 years $ 1,100