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Stock-Based Compensation - Summary of Grants of Time-Based Restricted Stock Unit Awards Associated with Key Member of Management (Detail) - Time-Based Restricted Stock Units [Member] - $ / shares
3 Months Ended
Jul. 22, 2021
Aug. 06, 2020
Aug. 02, 2018
Jul. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Time-Based Restricted Stock Units Awarded       0
Senior Executives and Management [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Time-Based Restricted Stock Units Awarded 37,591 129,095 10,000  
Price Per Share [1] $ 14.75 $ 11.01 $ 24.35  
Vesting Period 3 years 3 years 5 years  
[1]

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