Marketable Investment Securities, Restricted Cash and Cash Equivalents, and Other Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Marketable investment securities, restricted cash and other investments
Total current marketable investment securities	$ 152,649	$ 623,044
Total marketable investment securities	183,915	650,884
Restricted cash and cash equivalents	89,713	90,225
Equity method investments	161,657	169,038
Cost method investments	108,333	106,134
Fair value method and other debt investments	39,199	39,198
Total other investment securities, net	309,189	314,370
Total marketable investment securities, restricted cash and cash equivalents, and other investment securities, net	582,817	1,055,479
Current marketable investment securities - strategic - available-for-sale
Marketable investment securities, restricted cash and other investments
Total current marketable investment securities	149	144
Current marketable investment securities - strategic - trading/equity
Marketable investment securities, restricted cash and other investments
Total current marketable investment securities	144,419	176,205
Other investment securities
Marketable investment securities, restricted cash and other investments
Total current marketable investment securities	8,081	446,695
Restricted marketable investment securities
Marketable investment securities, restricted cash and other investments
Total marketable investment securities	$ 31,266	$ 27,840

Marketable investment securities, restricted cash and cash equivalent and other investment securities.

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- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as noncurrent.

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- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Amount of investment in equity method investee and investment in and advance to affiliate.

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Amount of investment in marketable security.

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Amount of investment in marketable security, classified as current.

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Amount of long-term investments classified as other.

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Amount of cash and cash equivalents restricted as to withdrawal or usage. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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