Broadcast Licenses, Goodwill and Other Intangible Assets (Amortizable intangible assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 16,315	$ 16,320
Accumulated Amortization	15,906	15,524
Net Amount	409	796
Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	4,660	4,660
Accumulated Amortization	4,660	4,322
Net Amount		338
Noncompete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,861	3,861
Accumulated Amortization	3,861	3,861
Favorable lease agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,965	5,965
Accumulated Amortization	5,597	5,570
Net Amount	368	395
Other intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,829	1,834
Accumulated Amortization	1,788	1,771
Net Amount	$ 41	$ 63