DERIVATIVE AND HEDGING ACTIVITIES - Narrative (Details)	6 Months Ended
	Jun. 30, 2021 USD ($)
Collar
Derivative [Line Items]
Gain (loss) on derivatives	$ 1,000,000.0
Tax benefit on loss from derivatives	300,000
Amount expected to be reclassified within next twelve months	900,000
Total Return Swap | Not Designated as Hedging Instrument
Derivative [Line Items]
Derivative, notional amount	26,500,000
Benefit recorded as a result of change in fair value	2,800,000
Total Return Swap | Not Designated as Hedging Instrument | Station operating expenses
Derivative [Line Items]
Benefit recorded as a result of change in fair value	1,900,000
Total Return Swap | Not Designated as Hedging Instrument | Corporate general and administrative expenses
Derivative [Line Items]
Benefit recorded as a result of change in fair value	900,000
Other Long Term Liabilities
Derivative [Line Items]
Derivative liability	$ 1,400,000