Cash Equivalents and Marketable Securities (Tables)

3 Months Ended

Mar. 31, 2024

Cash and Cash Equivalents [Abstract]

Estimated Fair Value of Cash Equivalents and Marketable Securities and the Gross Unrealized Gains and Losses

The following tables summarize the estimated fair value of the Company’s cash equivalents and marketable securities and the gross unrealized gains and losses (in thousands):

	March 31, 2024
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Cash equivalents:
Money market funds	$	225,797	$	—	$	—	$	225,797
Total cash equivalents	$	225,797	$	—	$	—	$	225,797
Marketable securities:
Commercial paper	$	74,803	$	12	$	(23)	$	74,792
Corporate bonds	41,497		11		(74)		41,434
U.S. government treasury securities	85,250		4		(209)		85,045
U.S. government agency securities	55,937		26		(145)		55,818
Total marketable securities	$	257,487	$	53	$	(451)	$	257,089

	December 31, 2023
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Cash equivalents:
Money market funds	$	150,648	$	—	$	—	$	150,648
Commercial paper	24,950		5		—		24,955
U.S. government treasury securities	10,965		1		—		10,966
Total cash equivalents	$	186,563	$	6	$	—	$	186,569
Marketable securities:
Commercial paper	$	79,124	$	62	$	—	$	79,186
Corporate bonds	32,984		81		(1)		33,064
U.S. government treasury securities	21,846		31		—		21,877
U.S. government agency securities	16,147		110		—		16,257
Total marketable securities	$	150,101	$	284	$	(1)	$	150,384

Available-for-Sale Securities in an Unrealized Loss Position

The following table summarizes the available-for-sale securities in an unrealized loss position for which an allowance for credit losses has not been recorded as of March 31, 2024 and December 31, 2023, aggregated by major security type and length of time in a continuous unrealized loss position:

	March 31, 2024
	Less Than 12 Months				12 Months or Longer				Total
	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Commercial paper	$	30,027	$	(23)	$	—	$	—	$	30,027	$	(23)
Corporate bonds	30,737		(74)		—		—		30,737		(74)
U.S. government treasury securities	77,707		(209)		—		—		77,707		(209)
U.S. government agency securities	44,742		(145)		—		—		44,742		(145)
Total marketable securities	$	183,213	$	(451)	$	—	$	—	$	183,213	$	(451)
	December 31, 2023
	Less Than 12 Months				12 Months or Longer				Total
	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
Corporate bonds	$	9,907	$	(1)	$	—	$	—	$	9,907	$	(1)
U.S. government treasury securities	4,831		—		—		—		4,831		—
Total marketable securities	$	14,738	$	(1)	$	—	$	—	$	14,738	$	(1)

Contractual Maturities of Marketable Securities at Estimated Fair Value

The following table summarizes the contractual maturities of the Company’s marketable securities at estimated fair value (in thousands):

	March 31, 2024		December 31, 2023
Due in one year or less	$	191,090	$	115,784
Due in 1 - 2 years	65,999		34,600
Total marketable securities	$	257,089	$	150,384