Broadcast Licenses, Goodwill and Other Intangible Assets (Changes to broadcast licenses) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2024	Dec. 31, 2023
Broadcast Licenses, Goodwill and Other Intangible Assets
Balance		$ 90,240	$ 90,307
Acquisitions		2,150
Disposals		(893)	(67)
Impairment charge	$ 0		0
Balance	$ 91,497	$ 91,497	$ 90,240