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Pension Benefits - Schedule of Multiemployer Plans (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2023
USD ($)
collective_bargaining_agreement
Dec. 31, 2022
USD ($)
Dec. 26, 2021
USD ($)
Pension Benefits      
Total Contributions $ 5,248 $ 4,871  
Pension Plan      
Pension Benefits      
Multiemployer plan, withdrawal obligation 68,000 74,000  
Multiemployer plans, withdrawal (gain) charges (2,300) 22,100  
Gain (loss) on liability adjustment (1,700) 7,100  
Contributions for individually significant plans 1,156 2,731 $ 2,764
Contributions for a plan not individually significant 29 36 33
Total Contributions 1,185 2,767 2,797
Pension Plan | CWA/ITU Negotiated Pension Plan      
Pension Benefits      
Contributions for individually significant plans 263 328 364
Pension Plan | Newspaper and Mail Deliverers'-Publishers' Pension Fund      
Pension Benefits      
Contributions for individually significant plans $ 703 804 912
Number of collective bargaining arrangements | collective_bargaining_agreement 2    
Pension Plan | GCIU-Employer Retirement Benefit Plan      
Pension Benefits      
Contributions for individually significant plans $ 54 56 48
Pension Plan | Pressmen's Publishers' Pension Fund      
Pension Benefits      
Contributions for individually significant plans 41 1,447 1,337
Pension Plan | Paper Handlers’-Publishers’ Pension Fund      
Pension Benefits      
Contributions for individually significant plans $ 95 $ 96 $ 103