Stock-Based Compensation - Summary of Grants of Time-Based Restricted Stock Unit Awards Associated with Key Member of Management (Detail) - Time Vested Restricted Stock Awards [Member] - $ / shares					12 Months Ended
		Jul. 18, 2019	Aug. 02, 2018	Jun. 13, 2017	May 03, 2020	Apr. 28, 2019	Apr. 29, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock Awarded					34,399	10,000	1,200
Management [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted Stock Awarded		34,399	10,000	1,200
Price Per Share	[1]	$ 18.49	$ 24.35	$ 32.50
Vesting Period		3 years	5 years	1 year

[1] Price per share represents closing price of our common stock on the date the respective award was granted.