Summary of Significant Accounting Policies (Narrative) (Details)	6 Months Ended
	Jun. 30, 2024 USD ($) item segment	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Summary of Significant Accounting Policies
Number of market serving | item	28
Number of FM radio stations | item	82
Number of AM radio stations	32
Number of metro signals	79
Debt securities, held to maturity | $	$ 8,700,000	$ 10,600,000
Securities at fair value | $	8,700,000		$ 10,600,000
Allowance for credit losses | $	$ 1,009,000	$ 618,000
Number of Radio Markets | item	28
Number of operating segments | segment	1
Number of reportable segments | segment	1