Income Taxes - Differences Between Income Tax Expense from Continuing Operations at Federal Income Tax Rate and Effective Income Tax Rate (Parenthetical) (Details) - USD ($)	12 Months Ended
	Apr. 28, 2024	Apr. 30, 2023	May 01, 2022
Income Taxes [Line Items]
Pre-tax income (loss)	$ (10,770,000)	$ (28,390,000)	$ (325,000)
United States [Member]
Income Taxes [Line Items]
Pre-tax income (loss)	$ (18,600,000)	$ (33,500,000)	$ (7,600,000)