Broadcast Licenses, Goodwill and Other Intangible Assets (Amortizable intangible assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 16,315	$ 16,315
Accumulated Amortization	15,944	15,906
Net Amount	371	409
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4,660	4,660
Accumulated Amortization	4,660	4,660
Noncompete Agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,861	3,861
Accumulated Amortization	3,861	3,861
Favorable lease agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,965	5,965
Accumulated Amortization	5,624	5,597
Net Amount	341	368
Other intangibles
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,829	1,829
Accumulated Amortization	1,799	1,788
Net Amount	$ 30	$ 41