Broadcast Licenses, Goodwill and Other Intangible Assets (Details)	3 Months Ended		12 Months Ended
	Dec. 31, 2025 USD ($) item	Dec. 31, 2024 USD ($)	Dec. 31, 2025 USD ($) item	Dec. 31, 2024 USD ($)	Sep. 30, 2025 USD ($)	Dec. 31, 2023 USD ($)
Finite-Lived Intangible Assets
Number of reporting units | item			1
Number of reporting units tested for impairment | item	5
Impairment of intangible assets	$ 1,168,000	$ 0	$ 1,168,000
Goodwill, impairment loss	19,229,000	0	19,229,000
Goodwill	0	$ 19,229,000	0	$ 19,229,000	$ 19,229,000	$ 19,236,000
Aggregate amortization expense			350,000	$ 270,000
2026	355,000		355,000
2027	106,000		106,000
2028	28,000		28,000
2029	24,000		24,000
2030	14,000		$ 14,000
FCC license New York market
Finite-Lived Intangible Assets
Impairment of intangible assets	1,168,000
Other market
Finite-Lived Intangible Assets
Impairment of intangible assets	$ 0