Acquisitions and Dispositions (Details 1) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Business Acquisition [Line Items]
Net operating revenue	$ 31,546	$ 31,888	$ 92,187	$ 93,993
Station operating expense	23,000	23,478	69,325	69,874
Corporate general and administrative	3,132	2,728	8,875	8,065
Other operating (income) expenses, net	(127)	(1,393)	(69)	(1,388)
Operating income	5,541	7,075	14,056	17,442
Interest expense	254	187	691	548
Income from continuing operations, before tax	5,287	6,888	13,365	16,894
Income tax expense	2,430	2,804	5,566	6,939
Income from continuing operations, net of tax	2,857	4,084	7,799	9,955
Income from discontinued operations, net of tax	30,451	1,511	32,501	3,688
Net income	$ 33,308	$ 5,595	$ 40,300	$ 13,643
Basic earnings per share:
From continuing operations	$ 0.47	$ 0.70	$ 1.32	$ 1.70
From discontinued operations	5.16	0.26	5.51	0.63
Basic earnings per share (in dollars per share)	5.63	0.96	6.83	2.33
Diluted earnings per share:
From continuing operations	0.47	0.70	1.32	1.70
From discontinued operations	5.16	0.26	5.51	0.63
Diluted earnings per share (in dollars per share)	$ 5.63	$ 0.96	$ 6.83	$ 2.33