Cash Equivalents and Marketable Securities - Schedule of Estimated Fair Value of Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Schedule Of Available For Sale Securities [Line Items]
Cash equivalents, amortized cost	$ 9,800	$ 8,888
Cash equivalents, estimated fair value	9,800	8,888
Marketable securities, amortized cost	52,246	78,024
Marketable securities, gross unrealized gains	0	3
Marketable securities, gross unrealized losses	(158)	(41)
Marketable securities, estimated fair value	52,088	77,986
Money market funds
Schedule Of Available For Sale Securities [Line Items]
Cash equivalents, amortized cost	5,800	8,888
Cash equivalents, estimated fair value	5,800	8,888
U.S. treasury securities
Schedule Of Available For Sale Securities [Line Items]
Marketable securities, amortized cost	1,007
Marketable securities, gross unrealized losses	(3)
Marketable securities, estimated fair value	1,004
Commercial paper
Schedule Of Available For Sale Securities [Line Items]
Cash equivalents, amortized cost	4,000	0
Cash equivalents, estimated fair value	4,000	0
Marketable securities, amortized cost	46,719	65,443
Marketable securities, gross unrealized gains	0	3
Marketable securities, gross unrealized losses	(143)	(34)
Marketable securities, estimated fair value	46,576	65,412
Corporate bonds
Schedule Of Available For Sale Securities [Line Items]
Marketable securities, amortized cost	4,520	12,581
Marketable securities, gross unrealized losses	(12)	(7)
Marketable securities, estimated fair value	$ 4,508	$ 12,574

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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-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
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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).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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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), classified as current.

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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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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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