Income Taxes - Summary of Income Taxes Paid (Refunded) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Apr. 28, 2024	Apr. 30, 2023	May 01, 2022
Income Taxes [Line Items]
Total income tax payments, net	$ 3,284	$ 2,324	$ 3,100
Domestic Tax Authority | United States [Member]
Income Taxes [Line Items]
United States Transition Tax Payment	499	265	266
Foreign Tax Authority | China [Member]
Income Taxes [Line Items]
Total income tax payments, net	2,317	1,831	2,036
China - Withholding Taxes Associated with Earnings and Profits Distribution to U.S. Parent	0		487
Foreign Tax Authority | Canada [Member]
Income Taxes [Line Items]
Total income tax payments, net	$ 468	$ 228	$ 311