Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Segment reporting information
Net operating revenue	$ 36,119	$ 33,831	$ 105,302	$ 97,250
Station operating expense	25,459	24,324	75,564	71,400
Corporate general and administrative	2,728	2,577	8,065	7,642
Other operating expense	1,393	(433)	1,385	(447)
Operating income (loss)	9,325	6,497	23,058	17,761
Total assets	217,803		217,803		$ 204,571
Radio [Member]
Segment reporting information
Net operating revenue	29,878	28,536	88,208	81,829
Station operating expense	21,775	20,825	64,757	61,066
Corporate general and administrative	0	0	0	0
Other operating expense	(1,393)	400	(1,388)	414
Operating income (loss)	9,496	7,311	24,839	20,349
Depreciation and amortization	1,363	1,295	4,115	3,676
Total assets	163,691	151,708	163,691	151,708
Television [Member]
Segment reporting information
Net operating revenue	6,241	5,295	17,094	15,421
Station operating expense	3,684	3,499	10,807	10,334
Corporate general and administrative	0	0	0	0
Other operating expense	0	33	3	33
Operating income (loss)	2,557	1,763	6,284	5,054
Depreciation and amortization	370	347	1,023	1,016
Total assets	23,302	23,131	23,302	23,131
Corporate and Other [Member]
Segment reporting information
Net operating revenue	0	0	0	0
Station operating expense	0	0	0	0
Corporate general and administrative	2,728	2,577	8,065	7,642
Other operating expense	0	0	0	0
Operating income (loss)	(2,728)	(2,577)	(8,065)	(7,642)
Depreciation and amortization	69	89	207	234
Total assets	30,810	29,323	30,810	29,323
Consolidated Segments [Member]
Segment reporting information
Net operating revenue	36,119	33,831	105,302	97,250
Station operating expense	25,459	24,324	75,564	71,400
Corporate general and administrative	2,728	2,577	8,065	7,642
Other operating expense	(1,393)	433	(1,385)	447
Operating income (loss)	9,325	6,497	23,058	17,761
Depreciation and amortization	1,802	1,731	5,345	4,926
Total assets	$ 217,803	$ 204,162	$ 217,803	$ 204,162