Stock-Based Compensation - Summary of Vested Performance Based and Time Based Restricted Stock Units (Detail) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
		May 02, 2021	May 03, 2020	Apr. 28, 2019
Time-Based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock Units Vested		0	0	1,200
Weighted Average Fair Value	[1]	$ 0	$ 0	$ 21
Price Per Share	[2]	$ 0	$ 0	$ 17.36
Performance-Based Restricted Stock Units [Member] | Senior Executives [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock Units Vested	[3]	3,277
Weighted Average Fair Value	[1],[3]	$ 33
Price Per Share	[3],[4]	$ 9.96
Performance-Based Restricted Stock Units [Member] | Key Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock Units Vested	[3]	3,710
Weighted Average Fair Value	[1],[3]	$ 37
Price Per Share	[3],[4]	$ 9.96
Performance-Based Restricted Stock Units [Member] | Senior Executives and Key Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock Units Vested	[3]		11,351	128,632
Weighted Average Fair Value	[1],[3]		$ 197	$ 3,754
Price Per Share	[3],[4]		$ 17.36	$ 29.19
Performance-Based Restricted Stock Units [Member] | Non-employee [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock Units Vested	[5]		4,961	10,364
Weighted Average Fair Value	[1],[5]		$ 86	$ 320
Price Per Share	[4],[5]		$ 17.36	$ 30.90

[1] Dollar amounts are in thousands.

[2] Price per share represents closing price of our common stock on the date the respective award vested.

[3] Senior executives and key employees.

[4] The weighted average price per share is derived from the closing prices of our common stock on the dates the respective performance-based restricted stock units vested.

[5] Non-employee