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Stock-Based Compensation - Narrative (Detail) - USD ($)
6 Months Ended
Oct. 03, 2022
Jul. 01, 2022
Oct. 01, 2021
Jul. 01, 2021
Oct. 30, 2022
Oct. 31, 2021
Sep. 16, 2015
Performance Based Restricted Stock Units [Member] | Selling, General and Administrative Expenses [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based compensation expense         $ 2,000 $ 109,000  
Time-Based Restricted Stock Units [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Remaining unrecognized compensation expense         $ 1,300,000    
Weighted average period over which unrecognized compensation expense is expected to be recognized         1 year 10 months 24 days    
Fair value of units expected to vest         $ 1,500,000    
Time-Based Restricted Stock Units [Member] | Selling, General and Administrative Expenses [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based compensation expense         396,000 446,000  
Common Stock Awards [Member] | Outside Directors [Member] | Immediate Vesting [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Common stock awarded 18,326 19,753 6,426 4,312      
Price Per Share $ 4.57 $ 4.24 $ 13.03 $ 16.24      
Common Stock Awards [Member] | Selling, General and Administrative Expenses [Member] | Outside Directors [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based compensation expense         $ 167,000 $ 154,000  
2015 Equity Incentive Plan [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of common stock authorized for issuance             1,200,000
Number of shares available for future equity based grants         242,188