Revenue Dissagregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 30, 2018	Sep. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 31, 2017	Sep. 24, 2017	Jun. 25, 2017	Mar. 26, 2017	Dec. 30, 2018	Dec. 31, 2017	Dec. 25, 2016
Disaggregation of Revenue [Line Items]
Revenues	$ 502,744	$ 417,346	$ 414,560	$ 413,948	$ 484,126	$ 385,635	$ 407,074	$ 398,804	$ 1,748,598	$ 1,675,639	$ 1,555,342
Building Real Estate [Member]
Disaggregation of Revenue [Line Items]
Revenues									23,000	17,000	17,000
Subscription
Disaggregation of Revenue [Line Items]
Revenues									1,042,571	1,008,431	880,543
Advertising
Disaggregation of Revenue [Line Items]
Revenues									558,253	558,513	580,732
Other
Disaggregation of Revenue [Line Items]
Revenues									147,774	108,695	94,067
News Products
Disaggregation of Revenue [Line Items]
Revenues									378,484	325,956	223,459
Other product subscription revenues
Disaggregation of Revenue [Line Items]
Revenues									22,136	14,387	9,369
Digital-Only Subscription Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenues									400,620	340,343	232,828
Display
Disaggregation of Revenue [Line Items]
Revenues									471,198	484,337	517,197
Other
Disaggregation of Revenue [Line Items]
Revenues									87,055	74,176	63,535
Print | Advertising
Disaggregation of Revenue [Line Items]
Revenues									299,380	320,222	371,980
Print | Display
Disaggregation of Revenue [Line Items]
Revenues									269,160	285,679	335,652
Print | Other
Disaggregation of Revenue [Line Items]
Revenues									30,220	34,543	36,328
Digital | Advertising
Disaggregation of Revenue [Line Items]
Revenues									258,873	238,291	208,752
Digital | Display
Disaggregation of Revenue [Line Items]
Revenues									202,038	198,658	181,545
Digital | Other
Disaggregation of Revenue [Line Items]
Revenues									$ 56,835	$ 39,633	$ 27,207