SEGMENT INFORMATION - Segment Data (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2025 USD ($) segment	Mar. 31, 2024 USD ($)
SEGMENT INFORMATION
NET REVENUE	$ 92,235	$ 104,410
Operating Expenses [Abstract]
Depreciation and amortization	2,315	1,850
Impairment charges	6,443	0
Interest and investment income	(966)	(1,998)
Interest expense	10,924	12,998
GAIN ON RETIREMENT OF DEBT	11,587	7,874
OTHER INCOME, NET	192	886
Income from consolidated operations before provision for income taxes	$ 3,919	10,648
Number of reportable segments | segment	4
Related to acquisition of property	$ 2,547	1,814
Operating Segments
Operating Expenses [Abstract]
Segment Adjusted EBITDA	20,947	29,112
Corporate/Eliminations/Other	(8,090)	(6,855)
Corporate Development Costs	747	5,359
Severance-related costs	219	64
Loss from ceased non-core business initiatives	359	712
Stock-based compensation	676	1,384
Depreciation and amortization	2,315	1,850
Impairment charges	6,443	0
Interest and investment income	(966)	(1,998)
Interest expense	10,924	12,998
GAIN ON RETIREMENT OF DEBT	(11,587)	(7,874)
OTHER INCOME, NET	(192)	(886)
Income from consolidated operations before provision for income taxes	3,919	10,648
Operating Segments | Radio Broadcasting
SEGMENT INFORMATION
NET REVENUE	32,610	36,351
Operating Expenses [Abstract]
Programming and technical	11,293	11,329
Sales and marketing	11,546	11,394
General and administrative	7,050	8,066
Other segment income (expenses)	127	72
Segment Adjusted EBITDA	2,848	5,634
Related to acquisition of property	2,135	1,084
Operating Segments | Reach Media
SEGMENT INFORMATION
NET REVENUE	5,853	8,472
Operating Expenses [Abstract]
Programming and technical	3,368	3,482
Sales and marketing	2,125	2,181
General and administrative	1,026	970
Other segment income (expenses)	115	(9)
Segment Adjusted EBITDA	(551)	1,830
Related to acquisition of property	0	10
Operating Segments | Digital
SEGMENT INFORMATION
NET REVENUE	10,212	12,189
Operating Expenses [Abstract]
Programming and technical	3,187	3,502
Sales and marketing	6,787	5,704
General and administrative	184	636
Other segment income (expenses)	4	0
Segment Adjusted EBITDA	58	2,347
Related to acquisition of property	284	447
Operating Segments | Cable Television
SEGMENT INFORMATION
NET REVENUE	44,193	48,004
Operating Expenses [Abstract]
Programming and technical	12,909	14,600
Sales and marketing	9,096	10,139
General and administrative	3,595	3,964
Other segment income (expenses)	(1)	0
Segment Adjusted EBITDA	18,592	19,301
Related to acquisition of property	0	69
Eliminations
SEGMENT INFORMATION
NET REVENUE	(633)	(606)
Operating Expenses [Abstract]
Related to acquisition of property	$ 128	$ 204