Consolidated Statements of Income - USD ($) shares in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Consolidated Statements of Income
Net operating revenue	$ 123,072,000	$ 124,829,000	$ 118,149,000
Operating expenses :
Station operating expense	92,692,000	93,727,000	87,759,000
Corporate general and administrative	11,460,000	11,359,000	11,657,000
Other operating expense, net	112,000	61,000	55,000
Impairment of intangible assets	0	0	1,449,000
Operating Expenses, Total	104,264,000	105,147,000	100,920,000
Operating income from continuing operations	18,808,000	19,682,000	17,229,000
Other (income) expenses:
Interest expense	735,000	946,000	903,000
Interest income	(610,000)	(631,000)	0
Other income	(16,000)	(23,000)	0
Income from continuing operations before income taxes	18,699,000	19,390,000	16,326,000
Income tax provision:
Current	4,000,000	3,040,000	2,290,000
Deferred	1,420,000	2,660,000	(8,210,000)
Income tax expense	5,420,000	5,700,000	(5,920,000)
Income from continuing operations, net of tax	13,279,000	13,690,000	22,246,000
Income from discontinued operations, net of tax	0	0	32,471,000
Net income	$ 13,279,000	$ 13,690,000	$ 54,717,000
Basic earnings per share:
From continuing operations	$ 2.23	$ 2.30	$ 3.77
From discontinued operations	0	0.00	5.50
Basic earnings per share	$ 2.23	$ 2.30	$ 9.27
Weighted average common shares	5,834	5,829	5,803
Diluted earnings per share
From continuing operations	$ 2.23	$ 2.30	$ 3.77
From discontinued operations	0	0.00	5.50
Diluted earnings per share	$ 2.23	$ 2.30	$ 9.27
Weighted average common and common equivalent shares	5,834	5,829	5,807
Dividends declared per share	$ 1.20	$ 1.45	$ 2.00