Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Segment reporting information
Net operating revenue	$ 31,410	$ 32,745
Station operating expense	25,052	24,685
Corporate general and administrative	2,863	2,717
Other operating (income) expense, net	(10)	0
Operating income (loss)	3,485	5,343
Total assets	221,567		$ 219,998
Radio [Member]
Segment reporting information
Net operating revenue	26,155	27,464
Station operating expense	21,340	21,140
Corporate general and administrative	0	0
Other operating (income) expense, net	(21)	(3)
Operating income (loss)	4,836	6,327
Depreciation and amortization	1,358	1,346
Total assets	160,071	163,401
Television [Member]
Segment reporting information
Net operating revenue	5,255	5,281
Station operating expense	3,712	3,545
Corporate general and administrative	0	0
Other operating (income) expense, net	31	3
Operating income (loss)	1,512	1,733
Depreciation and amortization	316	321
Total assets	22,565	23,655
Corporate and Other [Member]
Segment reporting information
Net operating revenue	0	0
Station operating expense	0	0
Corporate general and administrative	2,863	2,717
Other operating (income) expense, net	0	0
Operating income (loss)	(2,863)	(2,717)
Depreciation and amortization	71	69
Total assets	38,931	22,671
Consolidated Segments [Member]
Segment reporting information
Net operating revenue	31,410	32,745
Station operating expense	25,052	24,685
Corporate general and administrative	2,863	2,717
Other operating (income) expense, net	10	0
Operating income (loss)	3,485	5,343
Depreciation and amortization	1,745	1,736
Total assets	$ 221,567	$ 209,727