Concentration Risk, Credit Risk, Financial Instruments, Number of Investments

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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).

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes 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. Excludes cash and cash equivalents within disposal group and discontinued operation.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Concentration of Risks and Significant Customers (Details) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2021 USD ($) investment	Mar. 31, 2021	Sep. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) investment	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Concentration Risk [Line Items]
Cash and cash equivalents	$ 1,260,220		$ 214,960	$ 1,260,220	$ 214,960	$ 220,433
Marketable securities	408,954			408,954		149,903
Credit Concentration Risk \| Investments
Concentration Risk [Line Items]
Cash and cash equivalents	$ 1,200,000			$ 1,200,000		203,600
Number of investments \| investment	3			3
Credit Concentration Risk \| Debt Securities, Available-For-Sale
Concentration Risk [Line Items]
Marketable securities	$ 374,600			$ 374,600		$ 125,900
Credit Concentration Risk \| Debt Securities, Available-For-Sale \| Marketable Securities
Concentration Risk [Line Items]
Concentration risk, percentage		84.00%		92.00%
Credit Concentration Risk \| Accounts Receivable \| Sutton Bank
Concentration Risk [Line Items]
Concentration risk, percentage	89.00%		96.00%	92.00%	96.00%
Customer Concentration Risk \| Revenue from Contract with Customer Benchmark \| Largest customer
Concentration Risk [Line Items]
Concentration risk, percentage	68.00%		72.00%	71.00%	69.00%
Customer Concentration Risk \| Revenue from Contract with Customer Benchmark \| Second largest customer
Concentration Risk [Line Items]
Concentration risk, percentage			9.00%		11.00%