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.

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- Definition

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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Number of fully vested and expected to vest exercisable options that may be converted into shares under option plan. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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Weighted-average exercise price, at which grantee can acquire shares reserved for issuance, for fully vested and expected to vest exercisable or convertible options. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur.

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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		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Significant ranges of outstanding and exercisable options [Line Items]
Number of options outstanding	545,082		545,082		755,210
Weighted average remaining contractual life options outstanding			1 year 4 months 24 days
Weighted average exercise price options outstanding	$ 12.03		$ 12.03		$ 9.42
Number of options exercisable	545,082		545,082
Weighted average exercise price options exercisable	$ 12.03		$ 12.03
Recognized Non-Cash Compensation Expense [Line Items]
Total Non cash compensation expense recognized	$ 2,634	$ 2,951	$ 5,473	$ 6,055
Exercise prices from 6.43 to 9.66
Significant ranges of outstanding and exercisable options [Line Items]
Number of options outstanding	204,375		204,375
Weighted average remaining contractual life options outstanding			1 year 4 months 24 days
Weighted average exercise price options outstanding	$ 9.62		$ 9.62
Number of options exercisable	204,375		204,375
Weighted average exercise price options exercisable	$ 9.62		$ 9.62
Exercise prices from 13.11 to 13.98
Significant ranges of outstanding and exercisable options [Line Items]
Number of options outstanding	340,707		340,707
Weighted average remaining contractual life options outstanding			1 year 4 months 24 days
Weighted average exercise price options outstanding	$ 13.48		$ 13.48
Number of options exercisable	340,707		340,707
Weighted average exercise price options exercisable	$ 13.48		$ 13.48
Station operating expenses [Member]
Recognized Non-Cash Compensation Expense [Line Items]
Total Non cash compensation expense recognized	$ 1,243	1,680	$ 2,668	3,643
Corporate general and administrative expenses [Member]
Recognized Non-Cash Compensation Expense [Line Items]
Total Non cash compensation expense recognized	2,130	2,050	4,298	4,010
Stock-based compensation expense included in operating expenses [Member]
Recognized Non-Cash Compensation Expense [Line Items]
Total Non cash compensation expense recognized	3,373	3,730	6,966	7,653
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	$ 739	$ 779	$ 1,493	$ 1,598