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- Definition

Amortized cost 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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- Definition

Amount of unrealized loss on 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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- 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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- Definition

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- Definition

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.

+ References

No definition available.

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- Definition

Fair value of financial obligations, including, but not limited to, debt instruments, derivative liabilities, federal funds purchased and sold under agreements to repurchase, securities loaned or sold under agreements to repurchase, financial instruments sold not yet purchased, guarantees, line of credit, loans and notes payable, servicing liability, and trading liabilities.

+ References

No definition available.

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- Definition

Amount of investment in marketable security.

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Financial Instruments - Summary of Financial assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Cash	$ 2,765
Adjusted Cost	445,534
Unrealized Losses	(524)
Debt Securities, Available-for-sale	445,010
Cash and cash equivalents	66,810	$ 24,624	$ 46,637	$ 27,455
Marketable Securities	378,200	$ 0
Level 1 \| Money market funds
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Adjusted Cost	38,045
Debt Securities, Available-for-sale	38,045
Cash and cash equivalents	38,045
Level 2
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Adjusted Cost	404,724
Unrealized Losses	(524)
Debt Securities, Available-for-sale	404,200
Cash and cash equivalents	26,000
Marketable Securities	378,200
Level 2 \| U.S. Government securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Adjusted Cost	45,982
Unrealized Losses	(66)
Debt Securities, Available-for-sale	45,916
Marketable Securities	45,916
Level 2 \| U.S. Treasury securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Adjusted Cost	80,500
Unrealized Losses	(7)
Debt Securities, Available-for-sale	80,493
Cash and cash equivalents	26,000
Marketable Securities	54,493
Level 2 \| Commercial paper
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Adjusted Cost	94,887
Unrealized Losses	(15)
Debt Securities, Available-for-sale	94,872
Marketable Securities	94,872
Level 2 \| Corporate bonds
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Adjusted Cost	182,338
Unrealized Losses	(435)
Debt Securities, Available-for-sale	181,903
Marketable Securities	181,903
Level 2 \| Municipal securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Adjusted Cost	1,017
Unrealized Losses	(1)
Debt Securities, Available-for-sale	1,016
Marketable Securities	1,016
Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Financial liabilities, Fair value	1,060
Level 3 \| Warrant liabilities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Financial liabilities, Adjusted cost	1,060
Financial liabilities, Fair value	$ 1,060