Segment Information - International Net Sales (Parenthetical) (Detail) - USD ($) $ in Thousands	12 Months Ended
	May 02, 2021	May 03, 2020	Apr. 28, 2019
Revenues from External Customers and Long-Lived Assets [Line Items]
net sales	$ 299,720	$ 256,166	$ 281,325
Mexico [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
net sales	27,200	21,700	22,500
China [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
net sales	$ 28,100	$ 21,400	$ 29,800