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Pension Benefits - Schedule of Multiemployer Plans (Details) - Pension Plan
$ in Thousands
12 Months Ended
Dec. 26, 2021
USD ($)
collectiveBargainingAgreement
Dec. 27, 2020
USD ($)
Dec. 29, 2019
USD ($)
Pension Benefits      
Multiemployer plan, withdrawal obligation $ 70,000 $ 76,000  
Contributions for individually significant plans 2,764 2,888 $ 2,800
Contributions for a plan not individually significant 33 24 0
Total Contributions 2,797 2,912 2,800
CWA/ITU Negotiated Pension Plan      
Pension Benefits      
Contributions for individually significant plans 364 384 415
Newspaper and Mail Deliverers'-Publishers' Pension Fund      
Pension Benefits      
Contributions for individually significant plans $ 912 1,010 1,014
Number of collective bargaining arrangements | collectiveBargainingAgreement 2    
GCIU-Employer Retirement Benefit Plan      
Pension Benefits      
Contributions for individually significant plans $ 48 65 58
Pressmen's Publishers' Pension Fund      
Pension Benefits      
Contributions for individually significant plans $ 1,337 1,328 1,213
Collective bargaining agreement, actuarial calculation, period for smoothing investment losses (in years) 10 years    
Paper-Handlers' - Publishers' Pension Fund      
Pension Benefits      
Contributions for individually significant plans $ 103 $ 101 $ 100