PROPERTY AND EQUIPMENT (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross, Total	$ 187,491	$ 179,964
Less: Accumulated depreciation	(159,733)	(153,673)
Property and equipment, net	27,758	26,291
Depreciation and Amortization:	10,034	9,289
Depreciation	6,400	5,600
Land and improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross, Total	$ 4,128	4,128
Estimated Useful Lives	0 years
Buildings
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross, Total	$ 3,299	3,241
Estimated Useful Lives	31 years
Transmitters and towers [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross, Total	$ 45,733	43,466
Transmitters and towers [Member] \| Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	15 years
Transmitters and towers [Member] \| Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	7 years
Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross, Total	$ 67,025	63,192
Equipment [Member] \| Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	3 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross, Total	$ 9,357	9,397
Estimated Useful Lives	6 years
Furniture and fixtures \| Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Lives	7 years
Software and web development [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross, Total	$ 32,565	31,337
Estimated Useful Lives	3 years
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross, Total	$ 25,231	24,727
Property, Plant and Equipment, Estimated Useful Lives	Lesser of useful life or lease term
Construction-in-progress [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross, Total	$ 153	$ 476
Estimated Useful Lives	0 years

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment).

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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