Broadcast Licenses, Goodwill and Other Intangible Assets - Changes to broadcast licenses (Details) - USD ($)	3 Months Ended		12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2025	Dec. 31, 2024
Broadcast Licenses, Goodwill and Other Intangible Assets
Balance			$ 91,497,000	$ 90,240,000
Acquisitions				2,150,000
Impairment Charge	$ (1,168,000)	$ 0	(1,168,000)
Disposals			(18,000)	(893,000)
Balance	$ 90,311,000	$ 91,497,000	$ 90,311,000	$ 91,497,000