Income Taxes - Summary of Effective Income Tax Expense Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 24, 2021	Apr. 25, 2020	Apr. 27, 2019
Income Tax Disclosure [Abstract]
Tax at U.S. statutory rate	$ 41,984	$ (123,987)	$ 22,306
State tax provision, net of federal benefit	5,400	(466)	3,492
Effect of foreign taxes	2,594	7,277	2,728
Goodwill impairment	0	107,999	0
Legal settlement	0	11,088	0
ESOP	(2,286)	(2,393)	(2,465)
Other permanent differences	808	1,533	1,074
Tax reform	0	0	(2,686)
Other	(3,678)	(2,091)	(1,097)
Income tax expense (benefit)	$ 44,822	$ (1,040)	$ 23,352