BASIS OF PRESENTATION (Details) $ in Thousands	Feb. 20, 2024 USD ($)	Jun. 30, 2023 shares	Feb. 19, 2024 USD ($)	Dec. 31, 2023 USD ($) radioMarket	Dec. 31, 2022 USD ($)
Class of Stock [Line Items]
Nationwide footprint, number of top 15 markets | radioMarket				15
Nationwide footprint, number of top 25 markets | radioMarket				20
Reverse stock split (in shares) | shares		0.033333
Long-term debt				$ 1,924,023	$ 1,880,362
Subsequent Event
Class of Stock [Line Items]
Percentage of first lien holders in support of plan	100.00%
Percentage of first lien holders in support of plan, percentage of first lien claims	89.50%
Percentage of second lien holders in support of plan	100.00%
Percentage of second lien holders in support of plan, percentage of second lien claims	85.10%
Amount of debt equitized	$ 1,600,000
Percentage of debt equitized	80.00%
Long-term debt	$ 350,000		$ 1,900,000
Percent of equity expected to be received, claim holders	100.00%
Percent of equity expected to be received, debtor-in-possession claim holders	10.00%
Percent of equity expected to be received, first-lien claim holders	75.00%
Percent of equity expected to be received, second lien claim holders	15.00%
Warrants exercisable term	4 years
Percent of equity expected to be received, second lien warrant claim holders	17.50%
Fully diluted basis, equity value of warrants	$ 771,000