Business and Summary of Significant Accounting Principles (Narratives) (Details)							3 Months Ended								12 Months Ended
	Feb. 02, 2015 USD ($)	Nov. 01, 2013 USD ($) station	Jul. 23, 2013 USD ($)	Jul. 22, 2013 USD ($)	Jul. 01, 2012	Jan. 01, 2012 USD ($)	Dec. 31, 2015 USD ($) entity	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2015 USD ($) entity	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Business
Year founded															1997
Principles of Consolidation [Abstract]
Variable Interest Entities, Number of Entities | entity							4								4
Acquisition
Payments to Acquire Assets and Interest	$ 293,200,000
Impairment of intangible asset															$ 1,306,000
Goodwill							$ 239,263,000				$ 229,560,000				$ 239,263,000	$ 229,560,000	$ 219,041,000
Accounting Pronouncements
Deferred Tax Assets, Net, Current											56,100,000					56,100,000
Accounts Receivable and Allowance for Doubtful Receivables
Past due period															120 days
Intangible Assets
Finite-lived intangible asset, useful life															14 years 5 months
Goodwill and Intangible Asset Impairment															$ 0	0	0
Investments
Impairment of equity method investment															12,593,000	0	0
Asset Retirement Obligation
Additional capitalized costs							2,000,000				4,300,000				2,000,000	4,300,000
Revenue Recognition
Revenues							241,344,000	$ 258,573,000	$ 247,528,000	$ 231,089,000	228,791,000	$ 240,725,000	$ 224,399,000	$ 216,283,000	978,534,000	910,198,000	811,648,000
Receivables							208,384,000				$ 212,441,000				208,384,000	212,441,000
Advertising Expense
Advertising expense															5,700,000	5,700,000	5,200,000
Interest Expense
Interest costs capitalized															3,000,000	3,600,000	4,600,000
Guarantees
Guarantor liabilities							56,000,000								$ 56,000,000
Urban High Cost Support Program
Revenue Recognition
Percentage phase down, decrease in support payments					20.00%
Percentage phase down, maximum decrease in support payments															60.00%
Remote High Cost Support Program
Revenue Recognition
Maximum cost per line, per month						$ 250
Total High Cost Support Program
Revenue Recognition
Revenues															$ 66,200,000	$ 66,700,000	55,600,000
Receivables							$ 45,500,000								$ 45,500,000
Series of Individually Immaterial Business Acquisitions [Member]
Acquisition
Number of Businesses Acquired | entity															3
Total purchase price															$ 12,700,000
ACS
Acquisition
Total purchase price			$ 365,511,000
Cash consideration paid			100,000,000	$ 100,000,000
Business Acquisition, Percentage of Voting Interests Acquired				33.30%
Business Acquisition, Percentage of Voting Interests Acquired from Noncontrolling Interest				66.60%
Preferential cash distributions				$ 190,000,000
Preference period				4 years
Preferential adjustment maximum				$ 21,800,000
Goodwill			$ 148,948,000
Additional revenue																	50,600,000
Denali Media Holdings
Acquisition
Total purchase price		$ 7,600,000
Number of broadcast stations acquired | station		3
Selling, General and Administrative Expenses | ACS
Acquisition
Transaction costs																	$ 1,800,000
Rights to Receive Future Capacity [Member]
Acquisition
Assets, Fair Value Adjustment	$ 1,200,000
Rights to Use Capacity
Acquisition
Impairment of intangible asset															$ 3,800,000
Minimum | Other Intangible Assets
Intangible Assets
Finite-lived intangible asset, useful life															2 years
Maximum | Other Intangible Assets
Intangible Assets
Finite-lived intangible asset, useful life															20 years