Quarterly report pursuant to Section 13 or 15(d)

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- Document and Entity Information
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Notes to Financial Statements
Accounting Policies
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Notes Tables
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Cash, Cash Equivalents and Marketable Securities - Schedule of Cash, Cash Equivalents and Marketable Securities (Details)

v3.21.2

Cash, Cash Equivalents and Marketable Securities - Schedule of Cash, Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Cash Equivalents and Marketable Securities
Cash Equivalents, Amortized Cost		$ 173,984
Cash Equivalents, Fair value		173,984
Cash Equivalents and Marketable Securities, Amortized Cost	$ 166,706
Cash Equivalents and Marketable Securities, Unrealized Gains	2
Cash Equivalents and Marketable Securities, Unrealized Losses	(7)
Cash Equivalents and Marketable Securities, Fair Value	166,701
Corporate Debt Securities - Due in One Year or Less
Cash Equivalents and Marketable Securities
Marketable Securities, Amortized Cost	30,165
Marketable Securities, Unrealized Gains	1
Marketable Securities, Unrealized Losses	(2)
Marketable Securities, Fair Value	30,164
US Treasury Obligation - Due in More Than One Year to Five Years
Cash Equivalents and Marketable Securities
Marketable Securities, Amortized Cost	11,999
Marketable Securities, Unrealized Losses	(3)
Marketable Securities, Fair Value	11,996
Corporate Debt Securities - Due in More than One Year to Five Years
Cash Equivalents and Marketable Securities
Marketable Securities, Amortized Cost	9,122
Marketable Securities, Unrealized Gains	1
Marketable Securities, Unrealized Losses	(2)
Marketable Securities, Fair Value	9,121
Cash and money market funds
Cash Equivalents and Marketable Securities
Cash Equivalents, Amortized Cost	115,420	173,984
Cash Equivalents, Fair value	$ 115,420	$ 173,984

- Definition

Cash and cash equivalents vair value disclosure and debt securities, available-for-sale.

+ References

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Cash equivalents and debt securities, available-for-sale, unrealized gains.

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Cash equivalents and debt securities, available-for-sale, unrealized loss.

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Cash equivalents at carrying value and debt securities, available-for-sale.

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- Definition

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) 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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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) 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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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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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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Fair value portion 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.

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Amount of 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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