Segment Information - Separate Financial Data for Each of Company's Operating Segment (Detail) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Segment Reporting Information [Line Items]
Net revenue	$ 58,113	$ 59,550
Cost of revenue - digital media	1,839	1,360
Direct operating expenses	27,565	26,685
Selling, general and administrative expenses	11,435	10,501
Depreciation and amortization	4,027	3,962
Operating income (loss)	7,643	12,049
Corporate expenses	5,604	4,993
Interest expense	(3,866)	(3,227)
Interest income	7	8
Income before income taxes	3,784	8,830
Capital expenditures	2,239	3,242
Total assets	$ 521,890		$ 524,962
Percentage change in net revenue	(2.00%)
Percentage change in direct operating expenses	3.00%
Percentage change in selling, general and administrative expenses	9.00%
Percentage change in depreciation and amortization	2.00%
Percentage change in segment operating profit (loss)	(22.00%)
Percentage change in corporate expenses	12.00%
Percentage change in operating income (loss)	(37.00%)
Percentage change in interest expenses	20.00%
Percentage change in interest income	(13.00%)
Percentage change in income (loss) before income taxes	(57.00%)
Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ 13,247	17,042
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Corporate expenses	5,604	4,993
Television
Segment Reporting Information [Line Items]
Net revenue	36,565	39,502
Direct operating expenses	15,034	14,679
Selling, general and administrative expenses	5,446	5,055
Depreciation and amortization	2,867	2,795
Capital expenditures	1,419	2,071
Total assets	$ 370,041		367,869
Percentage change in net revenue	(7.00%)
Percentage change in direct operating expenses	2.00%
Percentage change in selling, general and administrative expenses	8.00%
Percentage change in depreciation and amortization	3.00%
Percentage change in segment operating profit (loss)	(22.00%)
Television \| Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ 13,218	16,973
Radio
Segment Reporting Information [Line Items]
Net revenue	16,884	16,345
Direct operating expenses	10,941	10,186
Selling, general and administrative expenses	4,888	4,526
Depreciation and amortization	790	869
Capital expenditures	771	1,153
Total assets	$ 128,599		132,395
Percentage change in net revenue	3.00%
Percentage change in direct operating expenses	7.00%
Percentage change in selling, general and administrative expenses	8.00%
Percentage change in depreciation and amortization	(9.00%)
Percentage change in segment operating profit (loss)	(65.00%)
Radio \| Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ 265	764
Digital
Segment Reporting Information [Line Items]
Net revenue	4,664	3,703
Cost of revenue - digital media	1,839	1,360
Direct operating expenses	1,590	1,820
Selling, general and administrative expenses	1,101	920
Depreciation and amortization	370	298
Capital expenditures	49	18
Total assets	$ 23,250		$ 24,698
Percentage change in net revenue	26.00%
Percentage change in cost of revenue	35.00%
Percentage change in direct operating expenses	(13.00%)
Percentage change in selling, general and administrative expenses	20.00%
Percentage change in depreciation and amortization	24.00%
Percentage change in segment operating profit (loss)	(66.00%)
Digital \| Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	$ (236)	$ (695)

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