Revenue - Advertising Revenues (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 26, 2021	Dec. 27, 2020
Disaggregation of Revenue [Line Items]
Acquired revenue	$ 2,308,321	$ 2,074,877	$ 1,783,639
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	$ 523,288	$ 497,536	$ 392,420
Digital | Revenue from Contract with Customer, Advertising Benchmark | Product concentration risk
Disaggregation of Revenue [Line Items]
As % of total	60.90%	62.00%	58.30%
Digital | Advertising
Disaggregation of Revenue [Line Items]
Acquired revenue	$ 318,440	$ 308,616	$ 228,594
Print | Revenue from Contract with Customer, Advertising Benchmark | Product concentration risk
Disaggregation of Revenue [Line Items]
As % of total	39.10%	38.00%	41.70%
Print | Advertising
Disaggregation of Revenue [Line Items]
Acquired revenue	$ 204,848	$ 188,920	$ 163,826