Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Segment reporting information
Net operating revenue	$ 35,541	$ 32,409	$ 32,986	$ 29,323	$ 32,234	$ 32,027	$ 32,764	$ 28,248	$ 130,259	$ 125,273	$ 125,833
Station operating expense	23,590	22,379	21,959	22,360	22,840	22,939	23,016	22,134	90,288	90,929	90,335
Corporate general and administrative	2,161	1,910	1,940	1,949	1,736	1,965	1,949	1,940	7,960	7,590	7,274
Operating income (loss) from continuing operations	9,790	8,120	9,087	5,014	7,658	7,123	7,799	4,174	32,011	26,754	28,224
Depreciation and amortization									6,858	7,101	7,335
Capital additions									4,809	5,410	4,141
Broadcast licenses, net	90,361				90,356				90,361	90,356
Total assets	197,330				190,334				197,330	190,334
Radio [Member]
Segment reporting information
Net operating revenue									111,763	108,938	109,891
Station operating expense									77,992	79,130	79,012
Operating income (loss) from continuing operations									33,771	29,808	30,879
Depreciation and amortization									5,222	5,518	5,772
Capital additions									3,786	3,990	3,295
Broadcast licenses, net	80,773				80,768				80,773	80,768
Total assets	148,163				148,973				148,163	148,973
Television [Member]
Segment reporting information
Net operating revenue									18,496	16,335	15,942
Station operating expense									12,296	11,799	11,323
Operating income (loss) from continuing operations									6,200	4,536	4,619
Depreciation and amortization									1,411	1,351	1,339
Capital additions									977	1,268	788
Broadcast licenses, net	9,588				9,588				9,588	9,588
Total assets	23,013				23,712				23,013	23,712
Corporate and Other [Member]
Segment reporting information
Corporate general and administrative									7,960	7,590	7,274
Operating income (loss) from continuing operations									(7,960)	(7,590)	(7,274)
Depreciation and amortization									225	232	224
Capital additions									46	152	58
Total assets	23,261				14,542				23,261	14,542
Assets Held For Sale [Member]
Segment reporting information
Total assets	$ 2,893				$ 3,107				$ 2,893	$ 3,107