Common Stock Repurchase Program (Detail) - Common Stock [Member] - USD ($)	3 Months Ended
	Jul. 30, 2023	Jul. 31, 2022	Mar. 31, 2020
Stockholders Equity Note [Line Items]
Common stock repurchased	0	0
Remaining authorized repurchase amount	$ 3,200,000
Stock Repurchase Program March 2020 [Member]
Stockholders Equity Note [Line Items]
Authorization amount for repurchase of common stock			$ 5,000,000