Segment Information - Separate Financial Data for Each of Company's Operating Segments (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2011	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Sales Information [Line Items]
Percentage change in net revenue	(1.00%)			3.00%
Percentage change in direct operating expenses	11.00%			12.00%
Percentage change in selling, general and administrative expenses	(15.00%)			(19.00%)
Percentage change in depreciation and amortization	(10.00%)			(8.00%)
Percentage change in segment operating profit	(7.00%)			5.00%
Percentage change in corporate expenses	12.00%			14.00%
Percentage change in operating income (loss)	(11.00%)			2.00%
Percentage change in interest expense	(38.00%)			(21.00%)
Percentage change in interest income	20.00%			22.00%
Percentage change in gain (loss) on debt extinguishment
Percentage change in income (loss) before income taxes
Net revenue	$ 57,786	$ 58,486		$ 163,823	$ 159,501
Direct operating expenses	25,860	23,293		76,073	67,803
Selling, general and administrative expenses	8,131	9,593		23,238	28,600
Depreciation and amortization	3,613	4,013		11,388	12,436
Segment operating profit	20,182	21,587		53,124	50,662
Corporate expenses	5,011	4,465		14,244	12,527
Capital expenditures	3,396	3,546		7,638	7,134
Operating income (loss)	15,171	17,122		38,880	38,135
Total assets	455,664			455,664		438,051
Interest expense	(5,352)	(8,671)		(21,017)	(26,730)
Interest income	12	10		28	23
Gain (loss) on debt extinguishment	(29,404)		(400)	(29,534)	(1,230)
Income (loss) before income taxes	(19,573)	8,461		(11,643)	10,198
Operating Segments [Member] | Television [Member]
Sales Information [Line Items]
Percentage change in net revenue	(3.00%)			3.00%
Percentage change in direct operating expenses	11.00%			13.00%
Percentage change in selling, general and administrative expenses	(21.00%)			(26.00%)
Percentage change in depreciation and amortization	(10.00%)			(8.00%)
Percentage change in segment operating profit	(7.00%)			6.00%
Net revenue	39,747	40,903		114,289	111,466
Direct operating expenses	15,905	14,349		46,884	41,567
Selling, general and administrative expenses	4,127	5,224		11,635	15,747
Depreciation and amortization	2,918	3,227		9,249	10,088
Segment operating profit	16,797	18,103		46,521	44,064
Capital expenditures	2,298	3,130		5,853	5,812
Total assets	331,189			331,189		313,904
Operating Segments [Member] | Radio [Member]
Sales Information [Line Items]
Percentage change in net revenue	3.00%			3.00%
Percentage change in direct operating expenses	11.00%			11.00%
Percentage change in selling, general and administrative expenses	(8.00%)			(10.00%)
Percentage change in depreciation and amortization	(12.00%)			(9.00%)
Percentage change in segment operating profit	(3.00%)			0.00%
Net revenue	18,039	17,583		49,534	48,035
Direct operating expenses	9,955	8,944		29,189	26,236
Selling, general and administrative expenses	4,004	4,369		11,603	12,853
Depreciation and amortization	695	786		2,139	2,348
Segment operating profit	3,385	3,484		6,603	6,598
Capital expenditures	1,098	416		1,785	1,322
Total assets	$ 124,475			$ 124,475		$ 124,147