Acquisitions - Additional Information (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 25, 2017 USD ($)	Jun. 25, 2017 USD ($) newspaper business_publication weekly_publication Shopper
2017 Acquisitions [Member]
Business Acquisition [Line Items]
Number of daily newspapers acquired | newspaper		5
Number of weekly publications acquired | weekly_publication		15
Number of shoppers acquired | Shopper		11
Aggregate purchase price		$ 21,430
Acquisition related costs recognized in selling, general, and administrative expense	$ 25	178
Goodwill expected to be tax deductible	1,381	$ 1,381
2016 Acquisitions [Member]
Business Acquisition [Line Items]
Number of business publications acquired | business_publication		68
Number of daily newspapers acquired | newspaper		7
Number of weekly publications acquired | weekly_publication		7
Number of shoppers acquired | Shopper		11
Aggregate purchase price		$ 135,908
Acquisition related costs recognized in selling, general, and administrative expense		2,048
Business Acquisition, Goodwill, Tax Cost Basis	50,325	50,325
Business Acquisition, Goodwill, Net Tax Basis	10,746	10,746
Goodwill expected to be tax deductible	$ 43,103	$ 43,103