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Stock-Based Compensation - Narrative (Detail) - USD ($)
 3 Months Ended
Jan. 08, 2024
Sep. 28, 2023
Sep. 27, 2023
Jul. 03, 2023
Aug. 10, 2022
Jul. 28, 2024
Jul. 30, 2023
Sep. 16, 2015
Performance Based Restricted Stock Units [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-based compensation award, vested           0 0  
Share-based compensation expense             $ 0  
Remaining unrecognized compensation expense           $ 44,000    
Weighted average period over which unrecognized compensation expense is expected to be recognized           2 years    
Fair value of units expected to vest           $ 46,000    
Performance Based Restricted Stock Units [Member] | Senior Executives [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-based compensation award, granted 24,597 [1],[2] 202,900 [1],[2]     146,048 [1],[2] 0 0  
Price Per Share [2] $ 6.23 [3] $ 6.43 [4]     $ 5.77 [5]      
Performance Based Restricted Stock Units [Member] | Key Employees [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-based compensation award, granted           0 0  
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           $ 6,000    
Time-Based Restricted Stock Units [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-based compensation award, vested           30,835 0  
Fair value           $ 157,000    
Price per share           $ 5.1    
Remaining unrecognized compensation expense           $ 638,000    
Weighted average period over which unrecognized compensation expense is expected to be recognized           1 year 7 months 6 days    
Fair value of units expected to vest           $ 1,400,000    
Time-Based Restricted Stock Units [Member] | Outside Directors [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-based compensation award, granted [6]   59,928            
Price Per Share [6],[7]   $ 5.59            
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           $ 170,000 $ 238,000  
Common Stock Awards [Member] | Outside Directors [Member] | Immediate Vesting [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Share-based compensation award, granted       16,616        
Price Per Share       $ 5.04        
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             $ 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           1,016,425    
Amended and Restated Plan [Member]                
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                
Number of common stock authorized for issuance additional     960,000          
[1] Amounts represent the maximum number of common stock shares that could be earned if certain performance targets are met as defined in the related restricted stock unit agreements.
[2] Performance-based restricted stock units awarded to senior executives.
[3] Price per share represents the fair market value per share ($1.11 per $1, or an increase of $0.62 to the closing price of our common stock on the date of grant) determined using the Monte Carlo simulation model for the market-based total shareholder return component and the closing price of our common stock ($5.61) for the performance-based component of the performance-based restricted stock units granted to a senior executive on January 8, 2024.
[4] Price per share represents the fair market value per share ($1.15 per $1, or an increase of $0.84 to the closing price of our common stock on the date of grant) determined using the Monte Carlo simulation model for the market-based total shareholder return component and the closing price of our common stock ($5.59) for the performance-based component of the performance-based restricted stock units granted to senior executives on September 28, 2023.
[5] Price per share represents the fair market value per share ($1.14 per $1, or an increase of $0.71 to the closing price of our common stock on the date of grant) determined using the Monte Carlo simulation model for the market-based total shareholder return component and the closing price of our common stock ($5.59) for the performance-based component of the performance-based restricted stock units granted to senior executives on August 10, 2022.
[6] Time-based restricted stock units award to outside directors.
[7] Price per share represents closing price of common stock on the date the respective award was granted.