Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Summary of Significant Accounting Policies [Line Items]
Estimated liabilities for unpaid claims	$ 10.6	$ 10.7
Journal Media Group | Accounts receivable
Summary of Significant Accounting Policies [Line Items]
Estimated liabilities for unpaid claims	$ 2.4
Television network affiliation relationships
Summary of Significant Accounting Policies [Line Items]
Estimated useful life	20 years
Customer lists and other intangible assets
Summary of Significant Accounting Policies [Line Items]
Estimated useful life	20 years
FCC licenses | Maximum
Summary of Significant Accounting Policies [Line Items]
FCC license term	8 years
Operating revenue | Marketing services, including advertising
Summary of Significant Accounting Policies [Line Items]
Concentration Risk, Percentage	70.00%