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Significant Accounting Policies - Fair Value Measurements (Details) - USD ($)
$ in Thousands
Jun. 25, 2023
Dec. 25, 2022
Fair Value, Recurring | Level 1    
Financial assets:    
Cash surrender value of life insurance policies $ 27,228 $ 30,120
Interest rate swaps   0
Financial liabilities:    
Interest rate swaps 0  
Fair Value, Recurring | Level 2    
Financial assets:    
Cash surrender value of life insurance policies 0 0
Interest rate swaps   986
Financial liabilities:    
Interest rate swaps 15  
Fair Value, Recurring | Level 3    
Financial assets:    
Cash surrender value of life insurance policies 0 0
Interest rate swaps   0
Financial liabilities:    
Interest rate swaps 0  
Carrying Value    
Financial assets:    
Cash surrender value of life insurance policies 27,228 30,120
Interest rate swaps   $ 986
Financial liabilities:    
Interest rate swaps $ 15