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Investments (Tables)

6 Months Ended

Jun. 30, 2023

Investments, Debt and Equity Securities [Abstract]

Schedule of Available-for-sale Investments

Available-for-sale investments consisted of the following as of June 30, 2023 and December 31, 2022 (in thousands):

		June 30, 2023
		Amortized Cost				Unrealized Gain				Unrealized Loss				Estimated Fair Value
Short-term marketable securities
U.S. government treasury and agency securities		$	308,885			$	12			$	(907	)		$	307,990
Total short-term marketable securities		$	308,885			$	12			$	(907	)		$	307,990

		December 31, 2022
		Amortized Cost				Unrealized Gain				Unrealized Loss				Estimated Fair Value
Short-term marketable securities
Commercial paper		$	9,969			$	—			$	—			$	9,969
U.S. government treasury securities			389,898				14				(4,064	)			385,848
Corporate bonds			12,415				—				(66	)			12,349
Total short-term marketable securities		$	412,282			$	14			$	(4,130	)		$	408,166

Schedule of Gross Unrealized Holding Losses and Fair Value for Investments in Unrealized Loss Position

The following table presents the gross unrealized holding losses and fair values for investments in an unrealized loss position, and the length of time individual securities have been in a continuous loss position, as of June 30, 2023 (in thousands):

		Less Than 12 Months								12 Months Or Greater
		Fair Value				Unrealized Loss				Fair Value				Unrealized Loss
U.S. government treasury and agency securities		$	199,578			$	(250	)		$	67,989			$	(657	)
Total available-for-sale securities		$	199,578			$	(250	)		$	67,989			$	(657	)

X

- Definition

Tabular disclosure of fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 55
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479081/326-30-55-8

Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-6

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479106/326-30-50-4

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- Definition

Tabular disclosure of the reconciliation of available-for-sale securities from cost basis to fair value.

+ References

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