Income Taxes - Summary of Taxes Paid (Detail) - USD ($) $ in Thousands	3 Months Ended
	Jul. 31, 2022	Aug. 01, 2021
Income Taxes [Line Items]
Total income taxes paid	$ 630	$ 1,688
Foreign Tax Authority [Member] | China [Member]
Income Taxes [Line Items]
Total income taxes paid	548	921
China - Withholding Taxes Associated With Earnings and Profits Distributed to the U.S.		487
Foreign Tax Authority [Member] | Canada [Member]
Income Taxes [Line Items]
Total income taxes paid	$ 82	$ 280