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Retirement Benefits (Details Textual) - USD ($)
$ in Thousands
12 Months Ended
Apr. 30, 2022
May 01, 2021
May 02, 2020
Retirement Benefits [Abstract]      
Defined contribution plan, employer matching contribution, percent of employees' gross pay 50.00%    
Defined contribution plan, maximum annual contributions per employee, percent 6.00%    
Defined contribution plan, award requisite service period 30 days    
Defined contribution plan, attained age (year) 21 years    
Defined contribution plan, cost $ 2,573 $ 0 $ 2,917