Income Taxes - Effective Income Tax Rate - Narrative (Detail) - USD ($)	3 Months Ended
	Jul. 30, 2023	Jul. 31, 2022
Income Taxes [Line Items]
Income taxes	$ 701,000	$ 896,000
Effective income tax rate	(26.50%)	(18.70%)
Pre-tax income (loss)	$ (2,641,000)	$ (4,803,000)
U.S. [Member]
Income Taxes [Line Items]
Pre-tax income (loss)	$ (3,300,000)	$ (7,200,000)