Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment reporting information
Net operating revenue	$ 36,371	$ 34,373	$ 33,831	$ 29,423	$ 33,760	$ 32,929	$ 33,832	$ 28,957	$ 133,998	$ 129,478	$ 130,259
Station operating expense	25,612	26,366	23,499	22,947	23,798	23,598	23,493	22,088	98,424	92,977	90,288
Corporate general and administrative	2,321	2,307	2,120	2,153	2,191	2,051	1,982	1,948	8,901	8,172	7,960
Other operating (income) expense	(1,210)	0	0	0	0	0	0	0
Impairment of intangible assets	1,936	0	0	0	2,033	0	0	0	1,936	2,033	0
Operating income (loss) from continuing operations	7,712	5,700	8,212	4,323	5,738	7,280	8,357	4,921	25,947	26,296	32,011
Capital additions									5,524	5,152	4,809
Broadcast licenses, net	86,762				88,460				86,762	88,460	90,361
Total assets	192,044				193,224				192,044	193,224
Radio [Member]
Segment reporting information
Net operating revenue									113,627	109,818	111,763
Station operating expense									85,167	79,933	77,992
Corporate general and administrative									0	0	0
Other operating (income) expense									(1,210)
Impairment of intangible assets									1,936	2,033
Operating income (loss) from continuing operations									27,734	27,852	33,771
Depreciation and amortization									5,023	5,119	5,222
Capital additions									3,856	3,884	3,786
Broadcast licenses, net	77,155				78,872				77,155	78,872
Total assets	142,068				143,927				142,068	143,927
Television [Member]
Segment reporting information
Net operating revenue									20,371	19,660	18,496
Station operating expense									13,257	13,044	12,296
Corporate general and administrative									0	0	0
Other operating (income) expense									0
Impairment of intangible assets									0	0
Operating income (loss) from continuing operations									7,114	6,616	6,200
Depreciation and amortization									1,411	1,421	1,411
Capital additions									929	872	977
Broadcast licenses, net	9,607				9,588				9,607	9,588
Total assets	22,509				23,274				22,509	23,274
Corporate and Other [Member]
Segment reporting information
Net operating revenue									0	0	0
Station operating expense									0	0	0
Corporate general and administrative									8,901	8,172	7,960
Other operating (income) expense									0
Impairment of intangible assets									0	0
Operating income (loss) from continuing operations									(8,901)	(8,172)	(7,960)
Depreciation and amortization									268	228	225
Capital additions									739	396	46
Broadcast licenses, net	0				0				0	0
Total assets	27,467				26,023				27,467	26,023
Consolidated Segments [Member]
Segment reporting information
Net operating revenue									133,998	129,478	130,259
Station operating expense									98,424	92,977	90,288
Corporate general and administrative									8,901	8,172	7,960
Other operating (income) expense									(1,210)
Impairment of intangible assets									1,936	2,033
Operating income (loss) from continuing operations									25,947	26,296	32,011
Depreciation and amortization									6,702	6,768	6,858
Capital additions									5,524	5,152	4,809
Broadcast licenses, net	86,762				88,460				86,762	88,460
Total assets	$ 192,044				$ 193,224				$ 192,044	$ 193,224