Cash Equivalents and Marketable Securities (Tables)

6 Months Ended

Jun. 30, 2022

Cash Equivalents And Marketable Securities [Abstract]

Schedule of Cash Equivalent and Marketable Securities Classified as Available-for-Sale

Cash equivalents and marketable securities classified as available-for-sale consisted of the following:

	June 30, 2022
	Amortized Cost Basis		Unrealized Gains		Unrealized Losses			Estimated Fair Value
	(in thousands)
Cash equivalents:
Money market funds	$	99,569	$	—	$	—		$	99,569
Commercial paper		122,812		—		(21	)		122,791
Agency discount notes		34,937		—		(4	)		34,933
Total cash equivalents		257,318		—		(25	)		257,293
Marketable securities:
U.S. treasury notes		76,127		—		(151	)		75,976
Commercial paper		126,709		1		(207	)		126,503
Corporate debt securities		16,032		—		(45	)		15,987
Total marketable securities		218,868		1		(403	)		218,466
Total cash equivalents and   marketable securities	$	476,186	$	1	$	(428	)	$	475,759

	December 31, 2021
	Amortized Cost Basis		Unrealized Gains		Unrealized Losses			Estimated Fair Value
	(in thousands)
Cash equivalents:
Money market funds	$	176,115	$	—	$	—		$	176,115
Commercial paper		56,988		—		(2	)		56,986
Total cash equivalents		233,103		—		(2	)		233,101
Marketable securities:
U.S. treasury notes		76,518		—		(46	)		76,472
Commercial paper		167,761		2		(26	)		167,737
Corporate debt securities		122,548		—		(58	)		122,490
Supranational debt securities		27,046		—		(2	)		27,044
Total marketable securities		393,873		2		(132	)		393,743
Total cash equivalents and   marketable securities	$	626,976	$	2	$	(134	)	$	626,844