Revenues - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 24, 2017	Jun. 25, 2017	Mar. 26, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 25, 2016
Disaggregation of Revenue [Line Items]
Total revenues	$ 751,405	$ 711,714	$ 730,768	$ 722,951	$ 854,242	$ 744,274	$ 774,507	$ 773,457	$ 2,916,838	$ 3,146,480	$ 3,047,474
Total advertising and marketing services
Disaggregation of Revenue [Line Items]
Total revenues									1,661,075	1,826,233	1,712,989
Print advertising
Disaggregation of Revenue [Line Items]
Total revenues									880,448	1,082,351	1,208,361
Digital advertising and marketing services
Disaggregation of Revenue [Line Items]
Total revenues									780,627	743,882	504,628
Circulation
Disaggregation of Revenue [Line Items]
Total revenues									1,063,022	1,120,739	1,133,676
Other
Disaggregation of Revenue [Line Items]
Total revenues									$ 192,741	$ 199,508	$ 200,809