SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Net revenue	$ 104,410	$ 109,869
Eliminations
Net revenue	(606)	(976)
Radio Broadcasting | Operating Segments
Net revenue	36,351	35,180
Reach Media | Operating Segments
Net revenue	8,472	10,917
Digital | Operating Segments
Net revenue	13,968	15,071
Cable Television | Operating Segments
Net revenue	46,225	49,677
Radio advertising
Net revenue	41,341	43,108
Radio advertising | Eliminations
Net revenue	(795)	(1,021)
Radio advertising | Radio Broadcasting | Operating Segments
Net revenue	33,754	33,841
Radio advertising | Reach Media | Operating Segments
Net revenue	8,382	10,288
Political advertising
Net revenue	1,237	296
Political advertising | Radio Broadcasting | Operating Segments
Net revenue	1,167	249
Political advertising | Reach Media | Operating Segments
Net revenue	48
Political advertising | Digital | Operating Segments
Net revenue	22	47
Digital advertising
Net revenue	13,946	15,024
Digital advertising | Digital | Operating Segments
Net revenue	13,946	15,024
Cable television advertising
Net revenue	25,365	25,822
Cable television advertising | Cable Television | Operating Segments
Net revenue	25,365	25,822
Cable television affiliate fees
Net revenue	20,787	23,837
Cable television affiliate fees | Cable Television | Operating Segments
Net revenue	20,787	23,837
Event revenues & other
Net revenue	1,734	1,782
Event revenues & other | Eliminations
Net revenue	189	45
Event revenues & other | Radio Broadcasting | Operating Segments
Net revenue	1,430	1,090
Event revenues & other | Reach Media | Operating Segments
Net revenue	42	629
Event revenues & other | Cable Television | Operating Segments
Net revenue	$ 73	$ 18