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Stock-Based Compensation - Narrative (Detail) - USD ($)
9 Months Ended
Jan. 02, 2020
Oct. 01, 2019
Jul. 01, 2019
Apr. 01, 2019
Oct. 01, 2018
Feb. 02, 2020
Jan. 27, 2019
Sep. 16, 2015
Performance Based Restricted Stock Units [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Remaining unrecognized compensation cost           $ 680,000    
Weighted average period over which unrecognized compensation cost is expected to be recognized           1 year 10 months 24 days    
Fair value of units expected to vest           $ 757,000    
Time Vested Restricted Stock Units [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Remaining unrecognized compensation cost           $ 688,000    
Weighted average period over which unrecognized compensation cost is expected to be recognized           2 years 7 months 6 days    
Fair value of units expected to vest           $ 561,000    
Common Stock Awards [Member] | Director [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of shares granted 4,972 4,519 3,659 2,948 3,600      
Price Per Share $ 14.08   $ 19.21 $ 19.18 $ 23.45      
Selling, General and Administrative Expenses [Member] | Performance Based Restricted Stock Units [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-based compensation expense           467,000 $ 259,000  
Selling, General and Administrative Expenses [Member] | Time Vested Restricted Stock Units [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-based compensation expense           154,000 30,000  
Selling, General and Administrative Expenses [Member] | Common Stock Awards [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-based compensation expense           $ 210,000 $ 84,000  
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           908,334