SHARE-BASED COMPENSATION - Other Award Information (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Significant ranges of outstanding and exercisable options [Line Items]
Number of options outstanding	329,562	466,925
Weighted average remaining contractual life options outstanding	2 years 1 month 6 days
Weighted average exercise price options outstanding	$ 1.91	$ 1.93
Number of options exercisable	329,562
Weighted average exercise price options exercisable	$ 1.91
Recognized Non-Cash Compensation Expense [Line Items]
Total Non cash compensation expense recognized	$ 4,218	$ 3,488	$ 3,730
The amount of the Company's windfall tax benefit account	$ 3,145	3,218
Exercise prices from 1.34 to 1.34
Significant ranges of outstanding and exercisable options [Line Items]
Number of options outstanding	304,562
Weighted average remaining contractual life options outstanding	2 years 1 month 6 days
Weighted average exercise price options outstanding	$ 1.34
Number of options exercisable	304,562
Weighted average exercise price options exercisable	$ 1.34
Exercise prices from 2.02 to 11.78
Significant ranges of outstanding and exercisable options [Line Items]
Number of options outstanding	25,000
Weighted average remaining contractual life options outstanding	1 year 9 months 18 days
Weighted average exercise price options outstanding	$ 8.87
Number of options exercisable	25,000
Weighted average exercise price options exercisable	$ 8.87
Station operating expenses [Member]
Recognized Non-Cash Compensation Expense [Line Items]
Total Non cash compensation expense recognized	$ 1,363	1,259	919
Corporate general and administrative expenses [Member]
Recognized Non-Cash Compensation Expense [Line Items]
Total Non cash compensation expense recognized	5,176	4,265	4,313
Stock-based compensation expense included in operating expenses [Member]
Recognized Non-Cash Compensation Expense [Line Items]
Total Non cash compensation expense recognized	6,539	5,524	5,232
Income tax benefit (net of a fully reserved valuation allowance for prior year) [Member]
Recognized Non-Cash Compensation Expense [Line Items]
Total Non cash compensation expense recognized	$ 2,321	$ 2,036	$ 1,502

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 718
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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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