Marketable Investment Securities, Restricted Cash and Cash Equivalents, and Other Investment Securities - Other Income Expense (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Other Income (Expense)
Marketable investment securities - realized and unrealized gains (losses)	$ 317	$ 58
Derivative instruments - net realized and/or unrealized gains (losses)	(4,000)
Costs related to early redemption of debt	(2,600)
Equity in earnings (losses) of affiliates	817	867
Other	205	667
Total	$ (5,261)	$ 1,592

Cost Related To Early Redemption Of Debt

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Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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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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Amount of income (loss) for proportionate share of equity method investee's income (loss).

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Amount of income (expense) related to nonoperating activities, classified as other.

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