Acquisitions and Dispositions (Details 2) - USD ($) $ in Thousands	3 Months Ended									12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Net operating revenue	$ 37,289	$ 36,119	$ 36,438	$ 32,745	$ 35,606	$ 33,831	$ 34,358	$ 29,061		$ 142,591	$ 132,856	$ 133,998
Station operating expense	25,978	25,459	25,420	24,685	25,868	24,324	24,311	22,765		101,542	97,268	98,424
Corporate general and administrative	2,915	2,728	2,620	2,717	2,449	2,577	2,583	2,482		10,980	10,091	8,901
Impairment of intangible assets	0	0	0	0	874	0	0	0	$ 1,936	0	874	1,936
Operating income (loss)	$ 8,404	$ 9,325	$ 8,390	$ 5,343	$ 6,321	$ 6,497	$ 7,450	$ 3,814		31,462	24,082	25,947
Nonrecurring Adjustment [Member]
Business Acquisition [Line Items]
Net operating revenue										142,591	139,458
Station operating expense										101,557	102,401
Corporate general and administrative										10,980	10,091
Other operating (income) expenses, net										(1,393)	541
Impairment of intangible assets										0	874
Operating income (loss)										31,447	25,551
Radio [Member]
Business Acquisition [Line Items]
Net operating revenue										118,955	111,792	113,627
Station operating expense										86,799	83,188	85,167
Corporate general and administrative										0	0	0
Impairment of intangible assets										0	874	1,936
Operating income (loss)										33,507	27,231	27,734
Radio [Member] | Nonrecurring Adjustment [Member]
Business Acquisition [Line Items]
Net operating revenue										118,955	118,394
Station operating expense										86,814	88,321
Corporate general and administrative										0	0
Other operating (income) expenses, net										(1,351)	499
Impairment of intangible assets										0	874
Operating income (loss)										33,492	28,700
Television [Member]
Business Acquisition [Line Items]
Net operating revenue										23,636	21,064	20,371
Station operating expense										14,743	14,080	13,257
Corporate general and administrative										0	0	0
Impairment of intangible assets										0	0	0
Operating income (loss)										8,935	6,952	7,114
Television [Member] | Nonrecurring Adjustment [Member]
Business Acquisition [Line Items]
Net operating revenue										23,636	21,064
Station operating expense										14,743	14,080
Corporate general and administrative										0	0
Other operating (income) expenses, net										(42)	32
Impairment of intangible assets										0	0
Operating income (loss)										8,935	6,952
Corporate and Other [Member]
Business Acquisition [Line Items]
Net operating revenue										0	0	0
Station operating expense										0	0	0
Corporate general and administrative										10,980	10,091	8,901
Impairment of intangible assets										0	0	0
Operating income (loss)										(10,980)	(10,101)	$ (8,901)
Corporate and Other [Member] | Nonrecurring Adjustment [Member]
Business Acquisition [Line Items]
Net operating revenue										0	0
Station operating expense										0	0
Corporate general and administrative										10,980	10,091
Other operating (income) expenses, net										0	10
Impairment of intangible assets										0	0
Operating income (loss)										(10,980)	(10,101)
Radio Broadcasting Segment [Member]
Business Acquisition [Line Items]
Net operating revenue										118,955	118,394
Station operating expense										86,814	88,321
Other operating (income) expenses, net										(1,351)	499
Impairment of intangible assets										0	874
Operating income (loss)										33,492	28,700
Television Broadcasting Segment [Member]
Business Acquisition [Line Items]
Net operating revenue										23,636	21,064
Station operating expense										14,743	14,080
Other operating (income) expenses, net										(42)	32
Operating income (loss)										$ 8,935	$ 6,952