SUMMARIZED QUARTERLY FINANCIAL DATA - Unaudited (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement Abstract
Income Tax Expense (Benefit)									$ 18,437	$ 19,911	$ 22,476
Net income (loss)	$ 14,088	$ 8,442	$ 6,747	$ (93)	$ 10,850	$ 6,473	$ 8,137	$ 1,363	29,184	26,823	26,024
Earnings Per Share Abstract
Basic net income (loss) per common share	$ 0.36	$ 0.21	$ 0.18	$ 0	$ 0.29	$ 0.17	$ 0.22	$ 0.04
Diluted net income (loss) per common share	$ 0.34	$ 0.21	$ 0.17	$ 0	$ 0.28	$ 0.17	$ 0.21	$ 0.04
Quarterly Financial Information Disclosure Abstract
Sales Revenue, Net	$ 117,704	$ 114,662	$ 100,592	$ 78,420	$ 101,513	$ 99,840	$ 100,201	$ 78,235	411,378	379,789	377,618
Operating Income Loss	32,555	23,159	20,615	9,253	28,531	21,205	23,916	11,924	85,582	85,576	92,567
Net Income (Loss) Attributable to Parent	$ 14,088	$ 8,442	$ 6,747	$ (93)	$ 10,850	$ 6,473	$ 8,137	$ 1,363	$ 29,184	$ 26,823	$ 26,024
Basic net income (loss) per common share	$ 0.36	$ 0.21	$ 0.18	$ 0	$ 0.29	$ 0.17	$ 0.22	$ 0.04
Weighted average basic common shares outstanding	38,088,000	38,076,000	38,074,000	38,026,000	37,779,000	37,693,000	37,687,000	37,660,000	38,083,947	37,763,353	37,417,807
Diluted net income (loss) per common share	$ 0.34	$ 0.21	$ 0.17	$ 0	$ 0.28	$ 0.17	$ 0.21	$ 0.04
Weighted Average Number Of Diluted Shares Outstanding	40,974,000	38,913,000	38,929,000	38,026,000	38,730,000	38,482,000	38,446,000	38,501,000	39,037,623	38,664,066	38,301,495
Changes in broadcasting licenses [Line Items]
Preferred stock dividend									$ 752	$ 0	$ 0
Net Income (Loss) Available to Common Stockholders, Basic	$ 13,675	$ 8,103	$ 6,747	$ (93)	$ 10,850	$ 6,473	$ 8,137	$ 1,363	28,432	26,823	$ 26,024
Radio Broadcasting Licences [Member]
Changes in broadcasting licenses [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)									$ 0	$ 0

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Net income after adjustments for dividends on preferred stock (declared in the period) and/or cumulative preferred stock (accumulated for the period).

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

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