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Stock Plans and Stock Compensation Expense (Stock Options) (Details)
12 Months Ended
Dec. 25, 2021
USD ($)
$ / shares
Dec. 26, 2020
$ / shares
Dec. 29, 2018
USD ($)
day
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Minimum market value (in dollars per share) | $ / shares $ 5.00    
Options outstanding, intrinsic value $ 0    
Options exercisable, intrinsic value 0    
Unrecognized compensation expense related to stock options $ 0    
Share-based Payment Arrangement, Option      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Forfeitures (in shares) | shares     203,000
Options granted, weighted average exercise price (in dollars per share) | $ / shares $ 0 $ 0 $ 4.30
Grant-date fair value option     306,000
Award vesting period     2 years
Minimum expense(in dollars per share) | $ / shares     $ 7.00
Trading period | day     5
Requisite service period     2 years
Expiration period     5 years