General - Schedule of Other Income, Net (Details) - USD ($) $ in Thousands	3 Months Ended
	Jul. 31, 2021	Jul. 25, 2020
Accounting Policies [Abstract]
Loss on interest rate swap agreements	$ (1,187)	$ (1,195)
Investment income and other	2,610	3,229
Other income, net	$ 1,423	$ 2,034