Acquisitions and Dispositions (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Oct. 29, 2018	Dec. 31, 2017
Assets Acquired:
Current assets	$ 559		$ 1,390
Property and equipment	3,007		6,678
Other assets:
Broadcast licenses	1,991		8,086
Goodwill	3,281		8,151
Other intangibles, deferred costs and investments	1,123		2,019
Total other assets	6,395		18,256
Total assets acquired	9,961	$ 9,300	26,324
Liabilities Assumed:
Current liabilities	120		468
Total liabilities assumed	120		468
Net assets acquired	$ 9,841		$ 25,856