Supplemental Financial Statement Information - Schedule of Other Income (Expense), Net (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Additional Financial Information Disclosure [Abstract]
Interest income	$ 7,631	$ 28,651	$ 39,394	$ 78,284
Gain (loss) on sale of securities, net	10	83	(886)	206
Foreign currency exchange gains (losses), net	744	435	580	0
Other, net	(911)	123	(322)	270
Other income (expense), net	$ 7,474	$ 29,292	$ 38,766	$ 78,760

Additional financial information disclosure.

No definition available.

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- Definition

Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), investment in debt security measured at amortized cost (held-to-maturity) and investment in debt security measured at fair value with change in fair value recognized in net income (trading).

+ References

No definition available.

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Amount before tax of foreign currency transaction realized and unrealized gain (loss) recognized in the income statement.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 20
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Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.7(b))
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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The aggregate amount of income or expense from ancillary business-related activities (that is to say, excluding major activities considered part of the normal operations of the business).

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

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