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
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Number of options outstanding, including both vested and non-vested options.

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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-Publisher FASB
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- Definition

The number of exercisable share options (fully vested and expected to vest) that may be converted as of the balance sheet date.

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As of the balance sheet date, the weighted-average exercise price (at which grantees can acquire the shares reserved for issuance) for exercisable stock options that are fully vested or expected to vest.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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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SHARE-BASED COMPENSATION - Other Award Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2015	Dec. 31, 2016
Significant ranges of outstanding and exercisable options [Line Items]
Number of options outstanding	322,562		322,562			329,562
Weighted average remaining contractual life options outstanding			1 year 3 months 18 days
Weighted average exercise price options outstanding	$ 1.87		$ 1.87			$ 1.91
Number of options exercisable	322,562		322,562
Weighted average exercise price options exercisable	$ 1.87		$ 1.87
Recognized Non-Cash Compensation Expense [Line Items]
Total Non cash compensation expense recognized	$ 1,032	$ 754	$ 3,101	$ 3,023	$ 2,594
Exercise prices from 1.34 to 1.34
Significant ranges of outstanding and exercisable options [Line Items]
Number of options outstanding	300,437		300,437
Weighted average remaining contractual life options outstanding			1 year 4 months 24 days
Weighted average exercise price options outstanding	$ 1.34		$ 1.34
Number of options exercisable	300,437		300,437
Weighted average exercise price options exercisable	$ 1.34		$ 1.34
Exercise prices from 2.02 to 11.78
Significant ranges of outstanding and exercisable options [Line Items]
Number of options outstanding	22,125		22,125
Weighted average remaining contractual life options outstanding			1 year
Weighted average exercise price options outstanding	$ 9.08		$ 9.08
Number of options exercisable	22,125		22,125
Weighted average exercise price options exercisable	$ 9.08		$ 9.08
Station operating expenses [Member]
Recognized Non-Cash Compensation Expense [Line Items]
Total Non cash compensation expense recognized	$ 360	372	$ 937	962	880
Corporate general and administrative expenses [Member]
Recognized Non-Cash Compensation Expense [Line Items]
Total Non cash compensation expense recognized	1,197	1,270	3,692	3,698	3,216
Stock-based compensation expense included in operating expenses [Member]
Recognized Non-Cash Compensation Expense [Line Items]
Total Non cash compensation expense recognized	1,557	1,642	4,629	4,660	4,096
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	$ 525	$ 888	$ 1,528	$ 1,637	$ 1,502