OTHER CURRENT LIABILITIES (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Accounts Payable and Accrued Liabilities, Current [Abstract]
Accrued compensation	$ 35,111	$ 25,264
Accounts receivable credits	1,547	1,683
Advertiser obligations	5,575	4,844
Accrued interest payable	11,706	9,804
Unearned revenue	16,790	15,651
Unfavorable sports liabilities	4,492	4,634
Accrued benefits	9,669	6,944
Non-income tax liabilities	1,894	1,332
Income taxes payable	872	0
Other	3,342	3,841
Total other current liabilities	$ 90,998	$ 73,997