Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 25, 2016	Dec. 27, 2015	Dec. 28, 2014
Goodwill and Intangible Assets [Line Items]
Gross carrying amount	$ 300,389	$ 240,689
Accumulated amortization	43,632	23,122
Net Carrying Amount	256,757	217,567
Goodwill	227,954	171,119	$ 134,042
Total	322,674	257,127
Goodwill [Member]
Goodwill and Intangible Assets [Line Items]
Goodwill	227,954	171,119
Mastheads [Member]
Goodwill and Intangible Assets [Line Items]
Mastheads	94,720	86,008
Advertiser Relationships [Member]
Goodwill and Intangible Assets [Line Items]
Gross carrying amount	174,918	143,002
Accumulated amortization	24,618	13,453
Net Carrying Amount	150,300	129,549
Customer Relationships [Member]
Goodwill and Intangible Assets [Line Items]
Gross carrying amount	24,938	19,829
Accumulated amortization	3,153	1,667
Net Carrying Amount	21,785	18,162
Subscriber Relationships [Member]
Goodwill and Intangible Assets [Line Items]
Gross carrying amount	90,944	77,385
Accumulated amortization	13,911	7,897
Net Carrying Amount	77,033	69,488
Other Intangible Assets [Member]
Goodwill and Intangible Assets [Line Items]
Gross carrying amount	9,589	473
Accumulated amortization	1,950	105
Net Carrying Amount	$ 7,639	$ 368