Broadcast Licenses, Goodwill and Other Intangible Assets - Amortizable intangible assets (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Finite-Lived Intangible Assets
Gross Carrying Amount	$ 17,399	$ 17,387
Accumulated Amortization	16,645	16,257
Net Amount	754	1,130
Customer relationships
Finite-Lived Intangible Assets
Gross Carrying Amount	5,560	5,560
Accumulated Amortization	5,160	4,860
Net Amount	400	700
Non-competition agreements
Finite-Lived Intangible Assets
Gross Carrying Amount	3,861	3,861
Accumulated Amortization	3,861	3,861
Favorable lease agreements
Finite-Lived Intangible Assets
Gross Carrying Amount	5,965	5,965
Accumulated Amortization	5,706	5,679
Net Amount	259	286
Other intangibles
Finite-Lived Intangible Assets
Gross Carrying Amount	2,013	2,001
Accumulated Amortization	1,918	1,857
Net Amount	$ 95	$ 144