Marketable Investment Securities, Restricted Cash and Cash Equivalents, and Other Investment Securities - Other Income Expense (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Other Income (Expense)
Marketable investment securities - realized and unrealized gains (losses) on equity securities	$ 838	$ 21,834	$ 3,894	$ (14,709)
Costs related to early redemption of debt		(2,537)	(439)	(2,716)
Equity in earnings of affiliates	2,056	759	991	2,205
Other	(62)	1,376	7,474	1,844
Total	$ 2,832	$ 21,432	$ 11,920	$ (13,376)

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Amount of unrealized and realized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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