Fair Value Measurements

12 Months Ended

Dec. 31, 2023

Fair Value Disclosures [Abstract]

Fair Value Measurements

14.Fair Value Measurements

The following tables summarize the Company’s assets by significant categories carried at fair value measured on a recurring basis at December 31, 2023 and 2022, respectively, by valuation hierarchy (in thousands):

	December 31, 2023
	Carrying Value		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Cash Equivalents		Marketable Securities
Level 1:
Money market funds	$	270,476	$	—	$	—		$	270,476	$	270,476	$	—
Subtotal	$	270,476	$	—	$	—		$	270,476	$	270,476	$	—
Level 2:
Commercial paper	$	19,295	$	8	$	—		$	19,303	$	1,998	$	17,305
U.S. Treasury securities		17,762		8		—			17,771	$	2,990	$	14,781
U.S. Agency securities		17,694		8		(1	)		17,701		—		17,701
Subtotal	$	54,751	$	24	$	(1	)	$	54,775	$	4,988	$	49,787
Total	$	325,227	$	24	$	(1	)	$	325,251	$	275,464	$	49,787

	December 31, 2022
	Carrying Value		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Cash Equivalents		Marketable Securities
Level 1:
Money market funds	$	77,191	$	—	$	—		$	77,191	$	77,191	$	—
Subtotal	$	77,191	$	—	$	—		$	77,191	$	77,191	$	—
Level 2:
Commercial paper	$	18,701	$	—	$	—		$	18,701	$	—	$	18,701
U.S. Treasury securities		35,266		—		(55	)		35,211		4,984		30,227
Subtotal	$	53,967	$	—	$	(55	)	$	53,912	$	4,984	$	48,928
Total	$	131,158	$	—	$	(55	)	$	131,103	$	82,175	$	48,928

At December 31, 2023, a total of $270.5 million or 98.2% of the Company’s interest-bearing cash equivalent balances were concentrated in one institutional money market fund that has investments consisting primarily of Repurchase Agreements, U.S Treasuries, and U.S. Government Agency Debts. The Company had $5.0 million or 1.8% of the Company's interest-bearing cash equivalent balance which consisted of investment-grade Commercial paper and investment-grade U.S. Treasury securities at December 31, 2023.

At December 31, 2022, a total of $77.2 million, or 93.9% of the Company’s interest-bearing cash equivalent balances were concentrated in one institutional money market fund that has investments consisting primarily of certificates of deposit, commercial paper, time deposits, Treasury repurchase agreements and U.S. Treasury securities. A total of $5.0 million, or 6.1%, of the Company’s interest-bearing cash equivalent balances consisted of investment-grade U.S. Treasury securities at December 31, 2022. Generally, these deposits may be redeemed upon demand and, therefore, the Company believes they have minimal risk.

The Company’s cash equivalents and marketable securities are classified within Level 1 or Level 2 on the basis of valuations using quoted market prices or alternative pricing sources and models utilizing market observable inputs, respectively. The marketable securities have been valued on the basis of valuations provided by third-party pricing services, as derived from such services’ pricing models. Inputs to the models may include, but are not limited to, reported trades, executable bid and ask prices, broker/dealer quotations, prices or yields of securities with similar characteristics, benchmark curves or information pertaining to the issuer, as well as industry and economic events. The pricing services may use a matrix approach, which considers information regarding securities with similar characteristics and have been classified as Level 2 to determine the valuation for a security.

The carrying amounts of accounts receivable, accounts payable, and accrued expenses approximate fair value because of their short-term maturity.