Stock-Based Compensation - Restricted Stock and RSUs (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Apr. 29, 2023	Apr. 30, 2022	Apr. 24, 2021
Maximum
Stock-Based Compensation
Vesting period	4 years
Restricted Stock
Shares
Granted (in shares)	256,128
Restricted Stock | Employees
Stock-Based Compensation
Percentage vesting each year from date of grant	25.00%
Period from grant date for first vesting	1 year
Vesting period	4 years
Unrecognized compensation cost	$ 6.7
Period for recognition of unrecognized compensation costs	1 year 6 months
Shares
Non-vested at beginning of period (in shares)	287,000
Granted (in shares)	256,000
Vested (in shares)	(107,000)
Canceled (in shares)	(43,000)
Non-vested at end of period (in shares)	393,000	287,000
Weighted Average Grant Date Fair Value
Non-vested at beginning of period (in dollars per share)	$ 33.45
Granted (in dollars per share)	24.58
Vested (in dollars per share)	32.81
Canceled (in dollars per share)	31.15
Non-vested at end of period (in dollars per share)	28.10	$ 33.45
Restricted Stock | Non-Employee Directors
Weighted Average Grant Date Fair Value
Granted (in dollars per share)	$ 26.49	$ 35.34	$ 32.08
Restricted Stock | Non-Employee Directors | Maximum
Shares
Granted (in shares)	100,000	100,000	100,000