Investments (Investments in Marketable Equity Securities) (Details 1) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Investments [Abstract]
Total Cost	$ 275,825	$ 232,847
Gross unrealized gains	489,191	340,255
Gross unrealized losses	(185)	0
Total Fair Value	$ 764,831	$ 573,102

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

No definition available.

+ Details

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- Definition

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

+ References

No definition available.

+ Details

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- Definition

Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 45
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=123594786&loc=SL75136599-209740

+ Details

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- Definition

Cost of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value.

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

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