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Stock-Based Compensation - Narrative (Detail) - USD ($)
6 Months Ended
Oct. 01, 2021
Jul. 01, 2021
Oct. 01, 2020
Jul. 01, 2020
Oct. 31, 2021
Nov. 01, 2020
Sep. 16, 2015
Performance-Based Restricted Stock Units [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Fair value of units expected to vest         $ 951,000    
Remaining unrecognized compensation cost         $ 1,100,000    
Weighted average period over which unrecognized compensation cost is expected to be recognized         2 years 7 months 6 days    
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         $ 109,000 $ 89,000  
Time-Based Restricted Stock Units [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Fair value of units expected to vest         2,800,000    
Remaining unrecognized compensation cost         $ 1,600,000    
Weighted average period over which unrecognized compensation cost is expected to be recognized         2 years    
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         $ 446,000 245,000  
Common Stock Awards [Member] | Outside Directors [Member] | Immediate Vesting [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Number of shares/units granted 6,426 4,312 5,193 7,000      
Price Per Share $ 13.03 $ 16.24 $ 13.48 $ 10.00      
Common Stock Awards [Member] | Selling, General and Administrative Expenses [Member]              
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]              
Share-based compensation expense         $ 154,000 $ 140,000  
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         470,947