Segment Information - Schedule of Results of Operations of Business Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Segment Reporting Information [Line Items]
NET REVENUES	$ 6,996	$ 16,334	$ 18,781	$ 24,480
Operating expenses excluding depreciation and amortization expense	6,488	12,277	15,945	19,165
Corporate expenses	932		2,097
Depreciation and amortization	1,163	310	2,190	651
OPERATING INCOME (LOSS)	(1,587)	3,747	(1,451)	4,664
Total Assets	147,104		147,104		$ 167,166
All Other
Segment Reporting Information [Line Items]
Corporate expenses	932		2,097
OPERATING INCOME (LOSS)	(932)		(2,097)
Radio | Operating Segments
Segment Reporting Information [Line Items]
NET REVENUES	3,829	16,334	12,168	24,480
Operating expenses excluding depreciation and amortization expense	4,005	12,277	10,936	19,165
Depreciation and amortization	232	310	481	651
OPERATING INCOME (LOSS)	(408)	$ 3,747	751	$ 4,664
Total Assets	84,193		84,193		102,921
Outdoor Advertising | Operating Segments
Segment Reporting Information [Line Items]
NET REVENUES	3,167		6,613
Operating expenses excluding depreciation and amortization expense	2,483		5,009
Depreciation and amortization	931		1,709
OPERATING INCOME (LOSS)	(247)		(105)
Total Assets	$ 62,911		$ 62,911		$ 64,245