Stock-Based Compensation - Summary of Vested Performance Based Restricted Stock Units (Detail) - Performance Based Restricted Stock Units [Member] - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
		Apr. 30, 2023	May 01, 2022
Senior Executives [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance-Based Restricted Stock Units Vested	[1]	545	5,051
Weighted Average Fair Value	[1],[2]	$ 3	$ 87
Price Per Share	[1],[3]	$ 5.1	$ 17.14
Key Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance-Based Restricted Stock Units Vested	[4]	437	5,812
Weighted Average Fair Value	[2],[4]	$ 2	$ 100
Price Per Share	[3],[4]	$ 5.1	$ 17.14

[1] Performance-based restricted stock units vested for senior executives.

[2] Dollar amounts are in thousands.

[3] Price per share is derived from the closing prices of our common stock on the dates the respective performance-based restricted stock units vested.

[4] Performance-based restricted stock units vested for key employees.