Income Taxes - Summary of Changes in Gross Amounts of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 24, 2021	Apr. 25, 2020
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at beginning of period	$ 11,740	$ 13,035
Additions for tax positions related to the current year	1,264	1,182
Additions for tax positions of prior years	20	218
Reductions for tax positions of prior years	(220)	(37)
Statute expirations	(1,938)	(2,289)
Settlements	0	(369)
Balance at end of period	$ 10,866	$ 11,740