Income Taxes - Reconciliation of Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2022	Apr. 24, 2021	Apr. 25, 2020
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at the beginning of the period	$ 1,069	$ 1,030	$ 1,069
Additions:
Positions taken during the current year	121	176	174
Positions taken during the prior year	10	35	106
Reductions:
Positions taken during the prior year	(23)	(19)	0
Decreases related to settlements with taxing authorities	0	0	(211)
Reductions resulting from the lapse of the statute of limitations	(140)	(153)	(108)
Balance at the end of the period	$ 1,037	$ 1,069	$ 1,030