Marketable Investment Securities, Restricted Cash and Cash Equivalents, and Other Investment Securities - Gains And Losses On Sales And Changes In Carrying Amounts Of Investments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Marketable Investment Securities, Restricted Cash and Cash Equivalents, and Other Investment Securities
Gains (losses) related to early redemption of debt	$ 1,262	$ (922)	$ (3,587)
Equity in earnings (losses) of affiliates	(1,202)	4,112	2,520
Other	458	1,276	247
Total	$ 518	$ 4,466	$ (820)