Retirement Benefits - (Details) - USD ($) $ in Thousands	12 Months Ended
	May 02, 2020	Apr. 27, 2019	Apr. 28, 2018
Retirement Benefits [Abstract]
Percentage of matching contribution	50.00%
Maximum annual contribution percentage	6.00%
Award requisite service period	3 months
Minimum age attained for award	21 years
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Contributions	$ 2,917	$ 2,754	$ 2,612