SHARE-BASED COMPENSATION - Non Cash Stock Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense included in operating expenses	$ 2,990	$ 2,740
Income tax benefit	671	664
After-tax stock-based compensation expense	2,319	2,076
Station operating expenses
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense included in operating expenses	1,170	1,073
Corporate general and administrative expenses
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense included in operating expenses	$ 1,820	$ 1,667

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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