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STOCK-BASED COMPENSATION AND STOCK OWNERSHIP PLANS - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 02, 2017
Dec. 27, 2024
Dec. 29, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares available for grant (in shares)   322,657  
Award performance period (in years)   3 years  
Employee stock purchase plan, purchase price (in percent) 85.00%    
Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Bonus achievement target level (in percent)   80.00%  
Bonus payout as a percentage of target award   50.00%  
Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Bonus achievement target level (in percent)   120.00%  
Bonus payout as a percentage of target award   150.00%  
Class A      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Employee stock purchase plan shares issued (in shares)   0 0
Non-Vested Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares tendered for tax withholding (in shares)   1,609 2,330
Stock-based compensation expense (income), net of forfeitures   $ 354 $ 428
Unrecognized stock-based compensation expense   1,951  
Fair value of vested restricted stock   $ 169 409
Non-Vested Stock | Director | Class A      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period (in years)   1 year  
Non-Vested Stock | Officers and Employees | Class A | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period (in years)   1 year  
Non-Vested Stock | Officers and Employees | Class A | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period (in years)   4 years  
Restricted Stock Units (RSUs)      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense (income), net of forfeitures   $ 115 139
Unrecognized stock-based compensation expense   1,755  
Fair value of vested restricted stock   $ 0 $ 1,015
Shares tendered back to company (in shares)   0 2,331
Restricted Stock Units (RSUs) | Vesting Period 1      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period (in years)   1 year  
Restricted Stock Units (RSUs) | Vesting Period 2      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period (in years)   3 years  
Employee Stock | Class A      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense (income), net of forfeitures   $ 38 $ 31