Revenue - Advertising Revenues (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 26, 2021
Disaggregation of Revenue [Line Items]
Acquired revenue	$ 2,426,152	$ 2,308,321	$ 2,074,877
Revenue from Contract with Customer, Advertising Benchmark | Product concentration risk
Disaggregation of Revenue [Line Items]
As % of total	100.00%	100.00%	100.00%
Advertising
Disaggregation of Revenue [Line Items]
Acquired revenue	$ 505,206	$ 523,288	$ 497,536
Digital | Revenue from Contract with Customer, Advertising Benchmark | Product concentration risk
Disaggregation of Revenue [Line Items]
As % of total	62.90%	60.90%	62.00%
Digital | Advertising
Disaggregation of Revenue [Line Items]
Acquired revenue	$ 317,744	$ 318,440	$ 308,616
Print | Revenue from Contract with Customer, Advertising Benchmark | Product concentration risk
Disaggregation of Revenue [Line Items]
As % of total	37.10%	39.10%	38.00%
Print | Advertising
Disaggregation of Revenue [Line Items]
Acquired revenue	$ 187,462	$ 204,848	$ 188,920