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Fair Value of Financial Assets and Liabilities - (Details) - Recurring - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Marketable securities:
U.S. Treasury obligations	$ 40,159	$ 180,673
Total assets	228,652	310,512
Money market funds
Assets:
Cash and cash equivalents	188,493	119,841
U.S. Treasury obligations
Assets:
Cash and cash equivalents		9,998
Level 1
Marketable securities:
U.S. Treasury obligations	40,159	180,673
Total assets	228,652	310,512
Level 1 | Money market funds
Assets:
Cash and cash equivalents	$ 188,493	119,841
Level 1 | U.S. Treasury obligations
Assets:
Cash and cash equivalents		$ 9,998

X

- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
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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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- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References

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-Publisher FASB
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-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
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