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Fair Value of Financial Instruments (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2022

Dec. 31, 2021

Fair Value Disclosures [Abstract]

Schedule of Fair Value of Company's Financial Assets

The fair value of the Company’s financial assets by level within the fair value hierarchy were as follows (in thousands):

		March 31, 2022
		Level 1				Level 2				Level 3
Money market fund (cash equivalent)		$	124,509			$	—			$	—
Money market fund (long-term restricted cash)			199				—				—
Marketable securities:
Commercial paper			—				50,904				—
Corporate debt			—				14,797				—
U.S. government agency			—				15,061				—
Asset-backed securities			—				3,007				—
Total assets measured at fair value		$	124,708			$	83,769			$	—

		December 31, 2021
		Level 1				Level 2				Level 3
Money market fund (cash equivalent)		$	26,472			$	—			$	—
Money market fund (long-term restricted cash)			199				—				—
Marketable securities (1):
Commercial paper			—				43,969				—
Corporate debt			—				17,072				—
U.S. government agency			—				5,053				—
Asset-backed securities			—				7,690				—
Total assets measured at fair value		$	26,671			$	73,784			$	—

(1) These items have been reclassified to conform to current period presentation.

The following table sets forth the fair value of the Company’s financial assets by level within the fair value hierarchy (in thousands):

		December 31, 2021
		Level 1				Level 2				Level 3
Assets
Money market fund (cash equivalent)		$	26,472			$	—			$	—
Money market fund (long-term restricted cash)			199				—				—
Marketable securities			—				73,784				—
Total assets measured at fair value		$	26,671			$	73,784			$	—

		December 31, 2020
		Level 1				Level 2				Level 3
Assets
Money market fund (long-term restricted cash)		$	199			$	—			$	—
Total assets measured at fair value		$	199			$	—			$	—

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- Definition

Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

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X

- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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